QN9080DHNY - NXP SEMICONDUCTORS

1. Introduction

QN908x is an ultra low power Bluetooth Low Energy wireless MCU with on-chip memory,

USB 2.0 full-speed compliant device interface, and 16-bit ADC for Bluetooth Smart

applications.

QN9080 integrates a 32-bit ARM Cortex-M4F core with Bluetooth Low Energy (v5.0)

compliant radio, link controller, host stack and GATT profiles. The 32-bit ARM Cortex-M4F

MCU and on-chip memory provides additional signal processing and scope to run

applications for a true single-chip Bluetooth Low Energy (v5.0) solution.

The QN908x uses a multi-layer AHB matrix to connect the ARM Cortex-M4 buses and

other bus masters to peripherals in a flexible manner. It optimizes performance by

allowing peripherals that are on different slave ports of the matrix to be accessed

simultaneously by different bus masters.

2. General description

The QN908x is a single chip, 10 mW peak power, high performance Bluetooth Low

Energy SoC platform. It facilitates the development of end products such as wearables,

health, and sport and fitness trackers. The end products also include retail beacons,

connected smart home appliances, smart remote controls, HID devices, asset trackers,

and home automation.

QN9080 provides single-chip solution for Bluetooth Smart applications by integrating a

Bluetooth Low Energy (v5.0) compliant radio, link controller, host stack and GATT profiles.

The integrated 32-bit ARM Cortex-M4F MCU with on-chip flash memory and a mix of

analogue and digital peripherals provides the most efficient data fusion engine. The

feature makes it a superior solution for applications requiring significant sensor fusion

computation.

Additional system features include a fully integrated DC-to-DC converter, LDO, low-power

sleep timer, battery monitor, high resolution ADC, and GPIO. These features reduce

overall system cost and size.

The QN908x operates with a power supply range of 1.62 V to 3.6 V. The best in-class

active current, with ultra-low power sleep modes, give excellent battery life allowing

operation from a coin cell battery.

QN908x

Ultra low power Bluetooth 5 system-on-chip solution

Rev. 1.2 — 19 April 2018 Product data sheet

Product data sheet Rev. 1.2 — 19 April 2018 2 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

3. Features and benefits

True single-chip Bluetooth Low Energy (v5.0) SoC solution

Integrated Bluetooth LE radio, protocol stack and application profiles

Supports central and peripherals roles

Supports master/slave concurrency

Supports 16 simultaneous links

Supports secure connections

Supports data packet length extension

Wifi/Bluetooth LE coexistence interface

48-bit unique bluetooth device address

RF

95dBm RX sensitivity in 1Mbps mode, -92dBm RX sensitivity in 2Mbps mode

(LDO mode)

94dBm RX sensitivity in 1Mbps mode, -91.5dBm RX sensitivity in 2Mbps mode

(DC-to-DC converter mode)

Fast and reliable RSSI in 1dB step

TX output power from 20 dBm to 2 dBm

Single-ended RF port with integrated balun

Generic FSK modulation with programmed data rate from 250Kbps to 2Mbps

Compatible with worldwide radio frequency regulations

Very low power consumption

Single 1.62 V to 3.6 V power supply

Integrated DC-to-DC buck converter and LDO

1.0 A power-down 1 mode, to wake up by GPIO

2.5 A power-down 0 mode, to wake up by 32 kHz sleep timer, RTC and GPIO

3.5 mA RX current with DC-to-DC convertor enabled at 3 V supply in 1Mbps mode

5.0 mA RX current with DC-to-DC convertor enabled at 3 V supply in 2Mbps mode

3.5 mA TX current @0 dBm TX power with DC-to-DC converter enabled at 3 V

supply in both 1Mbps and 2Mbps mode

ARM Cortex-M4 core (version r0p1)

ARM Cortex-M4 processor, running at a frequency of up to 32 MHz

Floating Point Unit (FPU) and Memory Protection Unit (MPU)

ARM Cortex-M4 built-in Nested Vectored Interrupt Controller (NVIC)

Serial Wire Debug (SWD) with six instruction breakpoints, two literal comparators,

and four watch points, including serial wire output for enhanced debug capabilities

System tick timer

On-chip memory

512 kB on-chip flash program memory and 2 kB page erase and write

128 kB SRAM

256 kB ROM

ROM API support

Flash In-System Programming (ISP)

Serial interfaces

Four Flexcomm serial peripherals

Product data sheet Rev. 1.2 — 19 April 2018 3 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

USART protocol supported by Flexcomm0, USART and I2C by Flexcomm1, SPI

and I2C by Flexcomm2, and SPI by Flexcomm3

Each Flexcomm includes a FIFO

I2C-bus interfaces support fast mode and with multiple address recognition and

monitor mode

USB 2.0 (full speed) device interface

Two quadrature decoders

SPI Flash Interface (SPIFI) uses a SPI bus superset with four data lines to access

off-chip quad SPI flash memory at a much higher rate than is possible using

standard SPI or SSP interfaces

Supports SPI memories with 1 or 4 data lines

Digital peripherals

DMA controller with 20 channels, able to access memories and DMA capable

peripherals

Up to 35 General Purpose Input Output (GPIO) pins, with configurable pull-up or

pull-down resistors

GPIO registers are located on the AHB for fast access

32 GPIOs can be selected as Pin INTerrupts (PINT), triggered by rising, or falling

input edges

AES-128 security coprocessor

Random Number Generator (RNG)

CRC engine

Fusion Signal Processor (FSP) for data fusion and machine learning algorithms

resulting in low power consumption compared to software processing

Analog peripherals

16-bit ADC with 8 external input channels, with sample rates of up to 32k sample

per second, and with multiple internal and external trigger inputs

Integrated temperature sensor, connected to one internal dedicated ADC channel

Integrated battery monitor connected to one internal dedicated ADC channel

General-purpose 8-bit 1M sample per second DAC

Integrated capacitive sense up to 8 channels, able to wake up the MCU from low

power states.

Two ultra low-power analog comparators, able to wake up the MCU from low power

states.

Timers

Four 32-bit general-purpose timers or counters, support capture inputs and

compare outputs, PWM mode, and external count input

Sleep timer, which can work in power-down mode and wake up MCU

32-bit Real Time Clock (RTC) with 1 second resolution running in the always-on

power domain; can be used for wake-up from all low power modes including

power-down

Watchdog Timer.

SC Timer or PWM.

Clock generation

32 MHz internal RC oscillator, which can be used as a system clock

Product data sheet Rev. 1.2 — 19 April 2018 4 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

16 MHz or 32 MHz crystal oscillator, which can be used as a system and RF

reference

32 kHz on-chip RC oscillator

32.768 kHz crystal oscillator

Power control

Programmable Power Management Unit (PMU) to minimize power consumption

Reduced power modes: sleep, and power-down

Power-On Reset (POR)

Brown-Out Detection (BOD) with separate thresholds for interrupt and forced reset

Single power supply 1.62 V to 3.6 V

Operating temperature range 40 °C to +85 °C

Available as 6 6 HVQFN48 and 3.28 3.20 mm WLCSP packages

Product data sheet Rev. 1.2 — 19 April 2018 5 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

4. Ordering information

4.1 Ordering options

[1] For details of Silicon revision, please refer to Errata sheet.

5. Marking

The HVQFN package has the following top-side marking:

•Line A: “9080” for QN9080

•Line B1: xxxxxx

•Line B2: xxxx

•Line C: xxYYWW[R]

–YY: year code, 17 for 2017

–WW: week code

–R = Chip revision

Table 1. Ordering information

Type number Package

Name Description Version

QN9080 HVQFN48 plastic thermal enhanced very thin quad flat package; no leads; 48 terminals;

body 6 6 0.85 mm

SOT778-7

QN9083 WLCSP47 wafer level chip-scale package; 47 bumps; 3.28 3.20 0.365 mm, 0.40 mm

pitch

SOT1882-1

Table 2. Ordering options

Type number Device order

part number

Silicon

revision[1]

Flash (kB) Total SRAM

(kB)

Cortex-M4

with FPU

FSP USB FS GPIO

QN9080 QN9080CHN C 512 128 1 1 1 35

QN9080DHN D 512 128 1 1 1 35

QN9083 QN9083CUK C 512 128 1 1 1 28

QN9083DUK D 512 128 1 1 1 28

Fig 1. HVQFN48 package marking Fig 2. WLCSP47 package marking

Product data sheet Rev. 1.2 — 19 April 2018 6 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

The WLCSP package has the following top-side marking:

•Line A: “9083”

•Line B1: xxxxxx

•Line B2: xxWW

–WW: week code

•Line C: YY[R]x

–YY: year code, 17 for 2017

–R = Chip revision

Table 3. Device revision table

Revision identifier (R) Revision description

‘D’ Current revision

‘C’ Second metal fix revision

Product data sheet Rev. 1.2 — 19 April 2018 7 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

6. Block diagram

Fig 3. QN908x block diagram

Product data sheet Rev. 1.2 — 19 April 2018 8 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

7. Pinning information

7.1 Pinning

Fig 4. HVQFN48 pin configuration

Product data sheet Rev. 1.2 — 19 April 2018 9 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Fig 5. WLCSP pin configuration

Product data sheet Rev. 1.2 — 19 April 2018 10 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

7.2 Pin description

In QN908x, each pin can support up to eight different digital or analog functions, including

General Purpose Input Output (GPIO).

Table 4. Pin description

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

PA00 11 6B PU GPIOA0 I/O general-purpose digital input output pin

ADC0 AI ADC external input 0

SCT0_OUT0 O SCTimer output 0

CTIMER0_CAP0 I 32-bit CTimer 0 capture input 0

FC0_RTS I/O flexcomm 0: USART RTS

FC2_SSEL3 I/O flexcomm 2: SPI SSEL3

WLAN_TX I WLAN active high TX active indicator for

coexistence

PA01 10 6A PU GPIOA1 I/O general-purpose digital input output pin

ADC1 AI ADC external input 1

SCT0_OUT1 O SCTimer output 1

CTIMER0_CAP1 I 32-bit CTimer 0 capture input 1

FC0_CTS I/O flexcomm 0: USART CTS

FC2_SSEL2 I/O flexcomm 2: SPI SSEL2

WLAN_RX I WLAN active high RX active indicator for

coexistence

PA02 9 - PU GPIOA2 I/O general-purpose digital input output pin

QDEC0_A I quadrature decoder 0 input channel A

SCT0_OUT2 O SCTimer output 2

CTIMER0_MAT0 O 32-bit CTimer 0 match output 0

R I/O reserved

FC2_SCL_SSEL1 I/O flexcomm 2: I2C SCL, SPI SSEL1

RFE_RX_EN O RX enable for external RF front-end

PA03 8 - PU GPIOA3 I/O general-purpose digital input output pin

QDEC0_B I quadrature decoder 0 input channel B

SCT0_OUT3 O SCTimer output 3

CTIMER0_MAT1 O 32-bit CTimer 0 match output 1

R O reserved

FC2_SDA_SSEL0 I/O flexcomm 2: I2C SDA, SPI SSEL0

RFE_TX_EN O TX enable for external RF front-end

PA04 7 5B PU GPIOA4 I/O general-purpose digital input output pin

ADC2 AI ADC external input 2

SCT0_OUT4 O SCTimer output 4

CTIMER0_MAT0 O 32-bit CTimer 0 match output 0

FC0_TXD I/O flexcomm 0: USART TXD

FC2_SDA_MOSI I/O flexcomm 2: I2C SDA, SPI MOSI

SPIF_IO0 I/O data bit 0 for the SPI flash interface

Product data sheet Rev. 1.2 — 19 April 2018 11 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA05 6 5A PU GPIOA5 I/O general-purpose digital input output pin

ADC3 AI ADC external input 3

SCT0_OUT5 O SCTimer output 5

CTIMER0_MAT1 O 32-bit CTimer 0 match output 1

FC0_RXD I/O flexcomm 0: USART RXD

FC2_SCL_MISO I/O flexcomm 2: SCL, SPI MISO

SPIF_IO1 I/O data bit 1 for the SPI flash interface

PA06 5 4B PU GPIOA6 I/O general-purpose digital input output pin

ADC_EX_CAP A connected with ADC external capacitor

SCT0_OUT3 O SCTimer output 3

CTIMER0_MAT2 O 32-bit CTimer 0 match output 2

FC1_RTS_SCL I/O flexcomm 1: USART RTS, I2C SCL

BLE_PTI0 O BLE packet traffic information bit 0

SPIFI_CLK O clock output for the SPI flash interface

PA07 4 3B PU GPIOA7 I/O general-purpose digital input output pin

ADC_VREFI AI ADC external reference voltage input

SCT0_OUT2 O SCTimer output 2

CTIMER1_CAP0 I timer 1 input capture 0

FC1_CTS_SDA I/O flexcomm 1: USART CTS, I2C SDA

BLE_PTI1 O BLE packet traffic information 1

SPIFI_CSN O active low chip select output for the SPI flash

interface

PA08 46 2B PU GPIOA8 I/O general-purpose digital input output pin

ADC4 AI ADC external input 4

SCT0_IN0 I SCTimer input 0

CTIMER1_CAP1 I timer 1 input capture 1

FC1_TXD_SCL I/O flexcomm 1: USART TXD, I2C SCL

BLE_PTI2 O BLE packet traffic information 2

SPIFI_IO2 I/O data bit 2 for the SPI flash interface

PA09 45 1B PU GPIOA9 I/O general-purpose digital input output pin

ADC5 AI ADC external input 5

SCT0_IN1 I SCTimer input 1

CTIMER1_MAT0 O 32-bit CTimer 1 match output 0

FC1_RXD_SDA I/O flexcomm 1: USART RXD, I2C SDA

BLE_PTI3 O BLE packet traffic information bit 3

SPIFI_IO3 I/O data bit 3 for the SPI flash interface

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 12 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA10 44 2C PU GPIOA10 I/O general-purpose digital input output pin

ADC6 AI ADC external input 6

SCT0_IN2 I SCTimer input 2

CTIMER1_MAT1 O 32-bit CTimer 1 match output 1

FC1_SCK I/O flexcomm 1: USART clock

ACMP0_OUT O analog comparator 0 output

BLE_TX O BLE transmit indicator for coexistence

PA11 43 2D PU GPIOA11 I/O general-purpose digital input output pin

ADC7 AI ADC external input 7

SCT0_IN3 I SCTimer input 3

CTIMER1_MAT2 O 32-bit CTimer 1 match output 2

FC2_SSEL2 I/O flexcomm 2: SPI SSEL2

ACMP1_OUT O analog comparator 1 output

BLE_RX O BLE reception indicator for coexistence

PA12 42 - PU GPIOA12 I/O general-purpose digital input output pin

R O reserved

SCT0_OUT5 O SCTimer output 5

ACMP0_OUT O analog comparator 0 output

FC1_TXD_SCL I/O flexcomm 1: USART TXD, I2C SCL

SD_DAC O sigma-delta modulator DAC output

ANT_SW O external antenna switch for diversity

PA13 32 - PU GPIOA13 I/O general-purpose digital input output pin

R I/O reserved

SCT0_OUT4 O SCTimer output 4

ACMP1_OUT O analog comparator 1 output

FC1_RXD_SDA I/O flexcomm 1: USART RXD, I2C SDA

FC3_SSEL1 I/O flexcomm 3: SPI SSEL1

RFE_EN O enable for external RF front-end

PA14 31 5G PU GPIOA14 I/O general-purpose digital input output pin

CS0 AI capacitive touch sense button input 0

ANT_SW O external antenna switch for diversity

CTIMER2_CAP0 I timer 2 input capture 0

FC0_RTS I/O flexcomm 0: USART RTS

FC3_SSEL0 I/O flexcomm 3: SPI SSEL0

QDEC1_A I quadrature decoder 1 input channel A

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 13 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA15 30 4G PU GPIOA15 I/O general-purpose digital input output pin

CS1 AI capacitive touch sense button input 1

SCT0_OUT0 O SCTimer output 0, PWM output 0

CTIMER2_CAP1 I timer 2 input capture 1

FC0_CTS I/O flexcomm 0: USART CTS

FC3_SCK I/O flexcomm 3: SPI clock

QDEC1_B I quadrature decoder 1 input channel B

PA16 29 4F PU GPIOA16 I/O general-purpose digital input output pin

CS2 AI capacitive touch sense button input 2

SCT0_OUT1 O SCTimer output 1, PWM output 1

CTIMER2_MAT0 O 32-bit CTimer 2 match output 0

FC0_TXD I/O flexcomm 0: USART TXD

FC3_MOSI I/O flexcomm 3: SPI MOSI

QDEC0_A I quadrature decoder 0 input channel A

PA17 28 6G PU GPIOA17 I/O general-purpose digital input output pin

CS3 AI capacitive touch sense button input 3

SD_DAC O sigma-delta modulator DAC output

CTIMER2_MAT1 O 32-bit CTimer 2 match output 1

FC0_RXD I/O flexcomm 0: USART RXD

FC3_MISO I/O flexcomm 3: SPI MISO

QDEC0_B I quadrature decoder 0 input channel B

PA18 27 5F PU GPIOA18 I/O general-purpose digital input output pin

CS4 AI capacitive touch sense button input 4

SCT0_OUT3 O SCTimer output 3, PWM output 3

CTIMER2_MAT2 O 32-bit CTimer 2 match output 2

FC0_SCK I/O flexcomm 0: USART clock

FC3_SSEL2 I/O flexcomm 3: SPI SSEL2

BLE_SYNC O BLE sync pulse

PA19 26 7G PU GPIOA19 I/O general-purpose digital input output pin

CS5 AI capacitive touch sense button input 5

SCT0_OUT2 O SCTimer output 2, PWM output 2

RFE_EN O enable for external RF front-end

FC0_SCK I/O flexcomm 0: USART clock

FC3_SSEL3 I/O flexcomm 3: SPI SSEL3

BLE_IN_PROC O BLE event in process indicator for coexistence

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 14 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA20 25 - PU GPIOA20 I/O general-purpose digital input output pin

QDEC1_A I quadrature decoder 1 input channel A

SCT0_OUT1 O SCTimer output 1, PWM output 1

CTIMER2_MAT0 O 32-bit CTimer 2 match output 0

SWO I/O serial wire trace output

FC1_RTS_SCL I/O flexcomm 1: USART RTS, I2C SCL

SPIFI_CLK O clock output for the SPI flash interface

PA21 24 - PU GPIOA21 I/O general-purpose digital input output pin

QDEC1_B I quadrature decoder 1 input channel B

SCT0_OUT0 O SCTimer output 0, PWM output 0

CTIMER2_MAT1 O 32-bit CTimer 2 match output 1

FC2_SSEL3 I/O flexcomm 2: SPI SSEL3

FC1_CTS_SDA I/O flexcomm 1: USART CTS, I2C SDA

SPIFI_CSN O active low chip select output for the SPI flash

interface

SWCLK

/PA22

23 7F PU SWCLK I/O serial wire clock; it is the default function after reset

GPIOA22 I/O general-purpose digital input output pin

SCT0_IN2 I SCTimer input 2

CTIMER3_MAT0 O 32-bit CTimer 3 match output 0

FC2_SDA_SSEL0 I/O flexcomm 2: I2C SDA, SPI SSEL0

FC3_SSEL3 I/O flexcomm 3: SPI SSEL3

QDEC1_A I quadrature decoder 1 input channel A

SWDIO/

PA23

22 6F PU SWDIO I/O serial wire debug I/O; it is the default function after

booting

GPIOA23 I/O general-purpose digital input output pin

SCT0_IN3 I SCTimer input 3

CTIMER3_MAT1 O 32-bit CTimer 3 match output 1

FC2_SCL_SSEL1 I/O flexcomm 2: I2C SCL, SPI SSEL1

FC3_SSEL2 I/O flexcomm 3: SPI SSEL2

QDEC1_B I quadrature decoder 1 input channel B

PA24 21 6E PU GPIOA24 I/O general-purpose digital input output pin

ACMP0N/CS6 AI analog comparator 0 negative input, or capacitive

touch sense button input 6

ETM_TRACEDAT0 O ETM trace data output bit 0

CTIMER3_CAP0 I timer 3 input capture 0

RFE_RX_EN O RX enable for external RF front-end

FC3_SSEL1 I/O flexcomm 3: SPI SSEL1

SPIFI_IO0 I/O data bit 0 for the SPI flash interface

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 15 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA25 20 7E PU GPIOA25 I/O general-purpose digital input output pin

ACMP0P/CS7 AI analog comparator 0 positive input, or capacitive

touch sense button input 7

ETM_TRACEDAT1 O ETM trace data output bit 1

CTIMER3_CAP1 I timer 3 input capture 1

RFE_TX_EN O TX enable for external RF front-end

FC3_SSEL0 I/O flexcomm 3: SPI SSEL0

SPIFI_IO1 I/O data bit 1 for the SPI flash interface

PA26 19 6D PU GPIOA26 I/O general-purpose digital input output pin

USB_DP I/O USB0 bidirectional D+ line

SCT0_IN0 I SCTimer input 0

CTIMER1_MAT0 O 32-bit CTimer 1 match output 0

FC2_SDA_MOSI I/O flexcomm 2: I2C SDA, SPI MOSI

QDEC0_A I quadrature decoder 0 input channel A

BLE_SYNC O BLE sync pulse

PA27 18 7D PU GPIOA27 I/O general-purpose digital input output pin

USB_DM I/O USB0 bidirectional D- line

SCT0_IN1 I SCTimer input 1

CTIMER1_MAT2 O 32-bit CTimer 1 match output 2

FC2_SCL_MISO I/O flexcomm 2: I2C SCL, SPI MISO

QDEC0_B I quadrature decoder 0 input channel B

BLE_IN_PROC O BLE event in process indicator for coexistence

PA28 17 - PU GPIOA28 I/O general-purpose digital input output pin

CLK_AHB O AHB clock output

ETM_TRACECLK O ETM trace clock output

RTC_CAP I RTC capture input

FC1_SCK I/O flexcomm 1: USART clock

SD_DAC O sigma-delta modulator DAC output

SPIFI_CSN O active low chip select output for the SPI flash

interface

PA29 16 6C PU GPIOA29 I/O general-purpose digital input output pin

ACMP1N AI analog comparator 1 negative input

ETM_TRACEDAT2 O ETM trace data output bit 2

CTIMER3_MAT0 O timer 3 match output 0

FC2_SCK I/O flexcomm 2: SPI clock

FC3_MISO I/O flexcomm 3: SPI MISO

SPIFI_IO2 I/O data bit 2 for the SPI flash interface

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 16 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

PA30 15 7C PU GPIOA30 I/O general-purpose digital input output pin

ACMP1P AI analog comparator 1 positive input

ETM_TRACEDAT3 O ETM trace data output bit 3

CTIMER3_MAT1 O timer 3 match output 1

FC2_SCK I/O flexcomm 2: SPI clock

FC3_MOSI I/O flexcomm 3: SPI MOSI

SPIFI_IO3 I/O data bit 3 for the SPI flash interface

PA31 12 7B PU GPIOA31 I/O general-purpose digital input output pin

DAC AO DAC analog output

RTC_CAP I RTC capture input

CTIMER3_MAT2 O Timer 3 match output 2

SWO I/O serial wire trace output

FC3_SCK I/O flexcomm 3: SPI clock

SPIFI_CLK O clock output for the SPI flash interface

XTAL32

_OUT/P

B00

3 4A - XTAL32_OUT AO 32.768 kHz crystal oscillator output

Remark: leave it unconnected or used as GPIO

when the LFXO is not used.

GPIOB00 I/O general-purpose digital input output pin

XTAL32

_IN/PB0

2 3A - XTAL32_IN AI 32.768 kHz crystal oscillator input

Remark: external input clock can be injected when

the LFXO is not used.

GPIOB01 I/O general-purpose digital input output pin

CHIP_M

ODE/PB

33 3C PU CHIP_MODE I boot selection with pull-up by default; it should be

pulled low to go through the normal ISP process for

firmware programming, otherwise the ISP process

is escaped to jump to flash

GPIOB02 I/O general-purpose digital input output pin

ANT_SW O external antenna switch for diversity

RSTN 34 4E PU - I active low reset input

XTAL_O

39 1D - - AO 16/32 MHz crystal oscillator output

Remark: leave it unconnected if not used for

crystal oscillator

XTAL_I

40 1C - - AI 16/32 MHz crystal oscillator input

Remark: this can be used as external clock input,

without using internal crystal oscillator

RF 35 2G - - RF RF input output port with Tx or Rx switch integrated

on chip

VCC 1 2A - - - power supply (1.62 V to 3.6 V)

VDD1 13 7A - - - digital power supply

VDD2 37 1E - - - RF power supply

VDD3 41 2E - - - analog power supply

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 17 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] PU = input mode, pull-up enabled (pull-up resistor pulls up pin to VCC). Z = high impedance; pull-up or pull-down disabled, AI = analog

input, AO = analog output, I = input, O = output, F = floating. Reset state reflects the pin state at reset without boot code operation. For

pin states in the different power modes, see Section 7.2.2. For termination on unused pins, see Section 7.2.1.

VSS 14,47 1F,3D,3E

,3F,3G,4

C,4D,5C,

5D,5E

- - - ground

IDC 48 1A - - AO DC-to-DC converter output; refer to reference

design circuit when DC-to-DC is used; leave it open

when DC-to-DC is not used

NC 36,38 - - - - not connected

Table 4. Pin description …continued

Symbol HVQFN48 WLCSP Reset

state[1]

Alternate function Type Description

Product data sheet Rev. 1.2 — 19 April 2018 18 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

7.2.1 Termination of unused pins

Table 5 shows how to terminate pins that are not used in the application. In many cases,

unused pins should be connected externally or configured correctly by software to

minimize the overall power consumption of the part.

Unused pins with GPIO function can be left unconnected and are configured as input with

their internal pull-up or pull-down enabled. Enabling pull-down is preferred.

In addition, it is recommended to configure all GPIO pins that are not bonded out on

smaller packages as inputs, with their internal pull-up or pull-down enabled.

[1] I = Input, PU = Pull-up enabled

7.2.2 Pin states in different power modes

[1] Default and programmed pin states are retained in sleep and power down mode

Table 5. Termination of unused pins

Pin Default state[1] Recommended termination of unused pins

PAnm I; PU unconnected if driven LOW and configured as GPIO output with pull-up disabled by

software

XTAL32_IN - unconnected

XTAL32_OUT - unconnected

Table 6. Pin states in different power modes

Pin Active Sleep Power-down

PAnm pins As configured in the SYSCON[1]. Default: input with internal pull-up enabled

RSTN Reset function enabled. Default: input, internal pull-up enabled

Product data sheet Rev. 1.2 — 19 April 2018 19 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8. Functional description

8.1 Architectural overview

The ARM Cortex-M4 includes one AHB-Lite bus, one system bus, and I-code and D-code

buses. Separate buses are dedicated for instruction fetch (I-code) and data access

(D-code).

The QN908x uses a multi-layer AHB matrix to connect the ARM Cortex-M4 buses and

other bus masters to peripherals in a flexible manner. It optimizes performance by

allowing peripherals that are on different slave ports of the matrix to be accessed

simultaneously by different bus masters.

8.2 ARM Cortex-M4 processor

The ARM Cortex-M4 is a general-purpose, 32-bit microprocessor, which offers high

performance and very low power consumption. The ARM Cortex-M4 offers many new

features, including a Thumb-2 instruction set, low interrupt latency, hardware multiply and

divide, and interruptable or continuable multiple load and store instructions. It also

provides automatic state save and restore for interrupts, tightly integrated interrupt

controller with wake-up interrupt controller, and multiple core buses capable of

simultaneous accesses.

A 3-stage pipeline is employed so that all parts of the processing and memory systems

can operate continuously. Typically, while one instruction is executed, its successor is

decoded, and a third instruction is fetched from memory.

8.3 ARM Cortex-M4 integrated Floating Point Unit (FPU)

The FPU supports single-precision add, subtract, multiply, divide, multiply and

accumulate, and square root operations. It also provides conversions between fixed-point

and floating-point data formats, and floating-point constant instructions.

The FPU provides floating-point computation functionality that is compliant with the

ANSI/IEEE standard 754-2008. The IEEE standard for binary floating-point arithmetic is

referred as the IEEE 754 standard.

8.4 Memory Protection Unit (MPU)

The Cortex-M4 includes a Memory Protection Unit (MPU) which can be used to improve

the reliability of an embedded system by protecting critical data within the user

application.

The MPU allows separating processing tasks by disallowing access to each other's data.

Access to memory regions can be disabled and also be defined as read-only. It detects

unexpected memory accesses that could potentially break the system.

The MPU separates the memory into distinct regions and implements protection by

preventing disallowed accesses. The MPU supports up to eight regions, each of which is

divided into eight sub-regions. Accesses to memory locations that are not defined in the

MPU regions, or not permitted by the region setting, will trigger memory management fault

exception.

Product data sheet Rev. 1.2 — 19 April 2018 20 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.5 Nested Vectored Interrupt Controller (NVIC) for Cortex-M4

The NVIC is an integral part of the Cortex-M4. The tight coupling to the CPU allows for low

interrupt latency and efficient processing of late arriving interrupts.

The NVIC supports 52 external interrupt input sources, each with eight levels of priority.

The processor supports both level and edge interrupts. External interrupt signals are

connected to the NVIC, and the NVIC prioritizes the interrupts. Software is used to set the

priority of each interrupt. The NVIC and the Cortex-M4F processor core are closely

coupled, providing low-latency interrupt processing and efficient processing of late arriving

interrupts.

The Wake-up Interrupt Controller (WIC) supports ultra-low power sleep mode. It enables

the processor and NVIC to be put into a very low-power sleep mode leaving the WIC to

identify and prioritize the interrupts. The processor implements the Wait-For-Interrupt

(WFI), Wait-For-Event (WFE) and the Send EVent (SEV) instructions. In addition, the

processor also supports use of SLEEPONEXIT, which causes the processor core to enter

sleep mode when it returns from an exception handler to thread mode.

8.5.1 Features

•Controls system exceptions and peripheral interrupts

•52 external interrupt input sources

•Eight programmable interrupt priority levels, with hardware priority level masking

•Relocatable vector table using Vector Table Offset Register (VTOR)

•Software interrupt generation

8.5.2 Interrupt sources

Each peripheral device has one interrupt line connected to the NVIC but may have several

interrupt flags. There are 52 interrupt sources in total.

8.6 System Tick timer (SysTick)

The ARM Cortex-M4 core includes a System Tick timer (SysTick) that generates a

dedicated SYSTICK exception. The clock source for the SysTick can be the system clock

or the SYSTICK clock.

8.7 On-chip static RAM

QN908x supports 128 kB SRAM with separate bus master access for higher throughput

and individual power control for low-power operation.

The 128 kB SRAM is divided into ten memory blocks, each with separate power control, to

refine the power consumption according to application requirements.

Table 7. SRAM memory blocks

SRAM block SIze Start address offset

94k 32 bit 0x0001 C000

84k 32 bit 0x0001 8000

74k 32 bit 0x0001 4000

64k 32 bit 0x0001 0000

Product data sheet Rev. 1.2 — 19 April 2018 21 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.8 On-chip flash

The QN908x supports 512 kB of on-chip flash memory, to store code and data. The MCU

accesses the flash via flash controller.

•256 equal pages with 2 kB each; any page can be erased individually

•Greater than 10 years of data retention at 85°C

•Endurance: minimum 10,000 cycles

8.9 On-chip ROM

The 256 kB on-chip ROM contains boot loader and the following Application Programming

Interfaces (API):

•In-System Programming (ISP) support for flash programming

8.10 Memory mapping

QN908x incorporates several distinct memory regions. The APB peripheral area is 64 kB

in size and is divided to allow for multiple peripherals. The registers incorporated into the

CPU, such as NVIC, SysTick, and sleep mode control, are located on the private

peripheral bus.

QN908x integrates four types of memories: embedded flash, ROM, SRAM, and external

SPIFI memory interface. To provide enough flexibility, the flash, ROM and RAM can be

mapped to different regions of the memory map, depending on the register bits remap.

The remap is 0 after reset and ROM is remapped to the address 0x0000 0000.

54k 32 bit 0x0000 C000

44k 32 bit 0x0000 8000

34k 32 bit 0x0000 4000

22k 32 bit 0x0000 2000

11k 32 bit 0x0000 1000

01k 32 bit 0x0000 0000

Table 7. SRAM memory blocks

SRAM block SIze Start address offset

Table 8. Memory map options

Memory Primary space Alias Memory remap

option

ROM (256 kB) 0x0300 0000 to

0x0304 0000

N/A 0x0000 0000 to

0x0004 0000

(remap=0)

flash (512 kB) 0x0100 0000 to

0x0108 0000

0x2100 0000 to

0x2108 0000; 0x3100

0000 to 0x3108 0000

0x0000 0000 to

0x0008 0000

(remap=1)

SRAM (128 kB) 0x0400 0000 to

0x0402 0000

0x2000 0000 to

0x2002 0000

0x0000 0000 to

0x0002 0000

(remap=2)

SPIFI flash memory 0x1000 0000 to

0x1800 0000

0x8000 0000 to

0x8800 0000

N/A

Product data sheet Rev. 1.2 — 19 April 2018 22 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Figure 6 shows the overall map of the entire address space from the user program

viewpoint.

Product data sheet Rev. 1.2 — 19 April 2018 23 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

The private peripheral bus includes CPU peripherals such as the NVIC, SysTick, and the core control registers.

Fig 6. QN908x memory mapping

Product data sheet Rev. 1.2 — 19 April 2018 24 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.11 Power management

To minimize system power consumption, the QN908x supports a variety of power modes

and power management features.

8.11.1 Power supply

QN908x integrates both LDO and DC-to-DC converter. When the device is powered at a

higher supply voltage like 3 V, DC-to-DC converter can be used to reduce current

consumption.

When in the LDO mode without using DC-to-DC converter, users should make sure the

VDD1, VDD2 and VDD3 never ramp-up before VCC. A simple way is to connect them

together. Refer to the reference schematic for more information.

Fig 7. QN908x APB memory map

Product data sheet Rev. 1.2 — 19 April 2018 25 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.11.2 Power modes

A variety of power modes are supported for the optimization of power consumption,

including active, sleep, power-down 0 and power-down 1 mode. Upon power-up or reset,

the device enters active mode. After processing is complete, the software puts the chip

into sleep mode or power-down mode, to save power consumption. The device is woken

up either by a reset or an interrupt trigger like a GPIO interrupt, timer timeout, or other

wake-up sources.

8.11.2.1 Sleep mode

In sleep mode, the system clock to the CPU is stopped and execution of instructions is

suspended until either a reset or an interrupt occurs. Peripheral functions, if selected to be

clocked, can continue operation during sleep mode and may generate interrupts to cause

the processor to resume execution. Sleep mode eliminates dynamic power used by the

processor itself, memory systems and related controllers, internal buses, and unused

peripherals. The processor state and registers, peripheral registers, and internal SRAM

values are maintained, and the logic levels of the pins remain static.

8.11.2.2 Power-down 0 mode

In power-down 0 mode, power is shut off to the entire chip except for the always-on PMU

domain, 32.768 kHz crystal oscillator, 32k RC oscillator, sleep timer, RTC, and the RSTN

pin. All peripheral clocks and all clock sources are off with the option of keeping the

32 kHz clock running. In addition, all analog blocks and flash are shut down. In power

down mode, the application can keep the analog comparator circuit running to monitor

external voltage input, which wakes up the device if external voltage is higher than the

reference voltage.

The QN908x wakes up from power-down 0 mode via a reset, digital pins selected as

inputs to the pin interrupt block, sleep timer timeout interrupt, RTC interrupt, BOD forced

reset, analog comparator interrupt, or cap sense interrupt.

Fig 8. QN908x power supply

Product data sheet Rev. 1.2 — 19 April 2018 26 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

In power-down 0 mode, the processor state, registers, and SRAM values can be

maintained, and the logic levels of the pins remain static. Power-down mode reduces

power consumption compared to sleep mode, at the expense of longer wake-up times.

8.11.2.3 Power-down 1 mode

In power-down 1 mode, 32k clock source is powered off too. The capacitive sensor, RTC

or BLE’s low power domain does not work either. Only external IO, analog comparator can

wake up system from this mode.

Table 9 shows the peripheral configuration in reduced power modes.

8.11.3 Brown-Out Detection (BOD)

The QN908x includes a monitor for the voltage level on pin VCC. If this voltage falls below

a fixed level, the BOD sets a flag that can cause an interrupt. In addition, separate

threshold levels can be selected to cause chip reset and interrupt. By default, the BOD is

disabled.

8.12 General-Purpose Input Output (GPIO)

The QN908x has two GPIO ports with a total of 35 GPIO pins. Device pins that are not

connected to a specific peripheral function are controlled by the GPIO registers. Pins may

be dynamically configured as inputs or outputs. The current level of a port pin can be read

back, no matter what peripheral is selected for that pin. See Table 4 for the default state

on reset.

8.12.1 Features

•Accelerated GPIO functions

–GPIO registers are located on the AHB so that the fastest possible I/O timing can

be achieved

–All GPIO registers are word, half-word, and byte addressable

–Entire port value can be written in one instruction

•Direction control of individual bits

•All I/O default to inputs after reset

Table 9. Peripheral configuration in reduced power modes

Peripheral Sleep mode Power-down 0 mode Power-down 1 mode

Flash Software configured Off Off

SRAM blocks Software configured Software configured Software configured

Sleep timer Software configured Software configured Off

RTC Software configured Software configured Off

Other digital peripherals Software configured Off Off

Analog comparator Software configured Software configured Software configured

32 kHz RCO Software configured Software configured Off

32.768 kHz crystal oscillator Software configured Software configured Off

BOD Software configured Software configured Software configured

Capacitive sense Software configured Software configured Software configured

Other analog peripherals Software configured Off Off

Product data sheet Rev. 1.2 — 19 April 2018 27 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•All GPIO pins can be selected to create an edge or level-sensitive GPIO interrupt

request

8.13 Pin interrupt

The pin interrupt block configures up to four pins from all digital pins to provide four

external interrupts connected to the NVIC. Any digital pin, independent of the function

selected through the switch matrix can be configured through the SYSCON block as an

input to the pin interrupt. The registers that control the pin interrupt are located on the I/O+

bus for fast single-cycle access.

8.13.1 Features

•Pin interrupts:

–All pins of GPIO A can be selected as edge sensitive or level sensitive interrupt

requests, each request creates a separate interrupt in the NVIC

–Edge sensitive interrupt pins can interrupt on rising or falling edges or both

–Level sensitive interrupt pins can be active HIGH or active LOW

–Pin interrupts can wake up the device from sleep mode, but not in power-down

mode

8.14 AHB peripherals

8.14.1 DMA controller

The DMA controller allows peripheral to memory, memory to peripheral, and memory to

memory transactions. Each DMA stream provides unidirectional DMA transfers for a

single source and destination.

8.14.1.1 Features

•20 channels, 15 of which are connected to peripheral DMA requests, these DMA

requests come from the Flexcomm (USART, SPI, I2C), and SPIFI interfaces

•DMA operations can be triggered by on-chip or off-chip events

•Priority is user-selectable for each channel (up to eight priority levels)

•Continuous priority arbitration

•Address cache with four entries

•Efficient use of data bus

•Supports single transfers of up to 1024 words

•Address increment options allow packing and/or unpacking data

8.15 Digital serial peripherals

8.15.1 USB 2.0 (full-speed) device controller

8.15.1.1 Features

•USB 2.0 (full-speed) device controller operating at 12Mbit/s

•Supports ten physical (five logical) endpoints including one control endpoint

Product data sheet Rev. 1.2 — 19 April 2018 28 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•Single- and double buffering supported

•Each non-control endpoint supports bulk, interrupt, or isochronous endpoint types

•Supports wake-up from deep sleep mode on USB activity and remote wake-up

•Link Power Management (LPM) supported

8.15.2 SPI Flash Interface (SPIFI)

The SPI Flash Interface (SPIFI) allows low-cost serial flash memories to be connected to

CPU, with little performance penalty compared to parallel flash devices with higher pin

count. A driver API handles setup, programming, and erasure. After an initialization call to

the SPIFI driver, the flash content is accessible as normal memory using byte, half word,

and word accesses by the processor and/or DMA.

8.15.2.1 Features

•SPI flash interface to external flash

•Transfer rates of up to SPIFI_CLK/2 bytes per second

•Code in the serial flash memory can be executed as if it was in the internal memory

space of the CPU. It is accomplished by mapping the external flash memory directly

into the CPU memory space

Remark: the SPIFI implemented on QN908x devices is intended for data access. The

cache size is reduced and therefore direct execution from off-chip SPI flash is not

recommended.

•Supports 1-bit, 2-bit, and 4-bit bidirectional serial protocols

•Half-duplex protocol compatible with various vendors and devices

•A driver library available from NXP Semiconductors to assist in using the SPIFI

8.15.3 Flexcomm serial communication (0,1,2,3)

Each Flexcomm provides a choice of peripheral functions, one of which the user must

choose before the function can be configured and used.

8.15.3.1 Features

•USART with asynchronous operation or synchronous master or slave operation

•SPI-bus master or slave, with up to four slave selects

•I2C-bus, including separate master, slave, and monitor functions

•Data for USART, and SPI traffic uses the Flexcomm FIFO. The I2C function does not

use the FIFO

•Flexcomm 0: USART

•Flexcomm 1: USART and I2C-bus

•Flexcomm 2: SPI-bus and I2C-bus

•Flexcomm 3: SPI-bus

8.15.4 I2C-bus interface

The I2C-bus is bidirectional for inter-IC control using only two wires: a serial clock line

(SCL) and a serial data line (SDA). Each device is recognized by a unique address and

can operate as either a receiver-only device (for example, an LCD driver) or a transmitter

Product data sheet Rev. 1.2 — 19 April 2018 29 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

with the capability to both receive and send information (such as memory). Transmitters

and/or receivers can operate in either master or slave mode, depending on whether the

chip has to initiate a data transfer or is only addressed. The I2C-bus is a multi-master bus

and can be controlled by more than one bus master connected to it.

8.15.4.1 Features

•Independent master and slave functions

•Bus speeds supported:

–Standard mode, up to 100 kbits/s

–Fast mode, up to 400 kbits/s

•Supports both multi-master and multi-master with slave functions

•Programmable I2C-bus slave addresses

•No chip clocks are required to receive and compare an address as a slave; so this

event can wake up the device from sleep mode

8.15.5 USART

8.15.5.1 Features

•Synchronous mode with master or slave operation. Includes data phase selection and

continuous clock option

•Maximum bit rates of 1 Mbit/s in asynchronous mode

•Maximum data rates of 1 Mbit/s in synchronous master and slave modes for USART

functions

•Multiprocessor/multidrop (9-bit) mode with software address compare

•RS-485 transceiver output enable

•Auto-baud mode for automatic baud rate detection

•Parity generation and checking: odd, even, or none

•Software selectable oversampling from 5 to 16 clocks in asynchronous mode

•One transmit and one receive data buffer

•RTS/CTS for hardware signaling for automatic flow control; software flow control can

be performed using Delta CTS detect, Transmit Disable control, and any GPIO as an

RTS output

•Received data and status can optionally be read from a single register

•Break generation and detection

•Receive data is 2 of 3 sample "voting"; status flag set when one sample differs

•Built-in baud rate generator with auto-baud function

•Fractional rate divider shared among all USARTs

•Interrupts available for FIFO receive level reached, FIFO transmit level reached,

transmit idle, change in receiver break detect, framing error, parity error, overrun,

underrun, delta CTS detect, and receiver sample noise detected

•Loopback mode for testing of data and flow control

•USART transmit and receive functions work with the system DMA controller

Product data sheet Rev. 1.2 — 19 April 2018 30 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.15.6 SPI serial I/O controller

8.15.6.1 Features

•Master and slave operation

•Maximum data rates of 16 Mbit/s in master mode for SPI functions

•Data frames of 1 to 16 bits supported directly. Larger frames supported by software or

DMA set-up

•Master and slave operation

•Data can be transmitted to a slave without the need to read incoming data; useful

while setting up an SPI memory

•Control information can optionally be written along with data; allows very versatile

operation, including “any length” frames

•Three slave select input/outputs with selectable polarity and flexible usage

8.16 Timers

8.16.1 Standard timer/counter (CTIMER0 to 3)

The QN908x includes four general-purpose 32-bit timer/counters.

The timer/counter is designed to count cycles of the system-derived clock or an externally

supplied clock. It optionally generates interrupts, timed DMA requests, or perform other

actions at specified timer values, based on four match registers. Each timer/counter also

includes two capture inputs, to trap the timer value when an input signal transitions,

optionally generating an interrupt.

8.16.1.1 Features

•A 32-bit timer/counter with a programmable 32-bit prescaler

•Counter or timer operation

•Up to three 32-bit capture channels per timer, that can take a snapshot of the timer

value when an input signal transitions; a capture event may also generate an interrupt

•The timer and prescaler may be configured to be cleared on a designated capture

event. This feature permits easy pulse width measurement by clearing the timer on

the leading edge of an input pulse and capturing the timer value on the trailing edge

•Four 32-bit match registers that allow:

–Continuous operation with optional interrupt generation on match

–Stop timer on match with optional interrupt generation

–Reset timer on match with optional interrupt generation

•Up to four external outputs per timer corresponding to match registers with the

following capabilities:

–Set LOW on match

–Set HIGH on match

–Toggle on match

–Do nothing on match

Product data sheet Rev. 1.2 — 19 April 2018 31 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•Up to two match registers can be used to generate timed DMA requests

•PWM mode using up to three match channels for PWM output

8.16.2 SCTimer/PWM

The SCTimer/PWM is a flexible timer module capable of creating complex PWM

waveforms. It can also perform other advanced timing and control operations with minimal

or no CPU intervention.

The SCTimer/PWM can operate as a single 32-bit counter or as two independent, 16-bit

counters in uni-directional or bi-directional mode. It supports a selection of match registers

against which the count value can be compared. It also has capture registers where the

current count value can be recorded when some pre-defined condition is detected.

The SCTimer/PWM module supports multiple separate events. The events can be defined

by the user based on some combination of parameters including a match on one of the

match registers, and/or a transition on one of the SCTimer/PWM inputs or outputs, the

direction of count, and other factors.

Every action that the SCTimer/PWM block can perform occurs in direct response to one of

these user-defined events without any software overhead. Any event can be enabled to:

•Start, stop, or halt the counter

•Limit the counter which means to clear the counter in unidirectional mode or change

its direction in bi-directional mode

•Set, clear, or toggle any SCTimer/PWM output

•Force a capture of the count value into any capture registers

•Generate an interrupt of DMA request

8.16.2.1 Features

•The SCTimer/PWM supports:

–Five inputs

–Six outputs

–Ten match/capture registers

–Ten events

–Ten states

•Counter/timer features

–Each SCTimer/PWM is configurable as two 16-bit counters or one 32-bit counter

–Counters clocked by system clock or selected input

–Configurable number of match and capture registers. Up to five match and capture

registers total

–Ten events

–Ten states

–Upon match and/or an input or output transition create the following events:

interrupt; stop, limit, halt the timer or change counting direction; toggle outputs;

change the state

–Counter value can be loaded into capture register triggered by a match or

input/output toggle

Product data sheet Rev. 1.2 — 19 April 2018 32 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

–Each SCTimer/PWM is configurable as two 16-bit counters or one 32-bit counter

–Counters clocked by system clock or selected input

–Configurable number of match and capture registers. Up to five match and capture

registers total

–Ten events

–Ten states

–Upon match and/or an input or output transition create the following events:

interrupt; stop, limit, halt the timer or change counting direction; toggle outputs;

change the state

–Counter value can be loaded into capture register triggered by a match or

input/output toggle

•PWM features:

–Counters can be used in conjunction with match registers to toggle outputs and

create time-proportioned PWM signals

–Up to eight single-edge or four dual-edge PWM outputs with independent duty

cycle and common PWM cycle length

•Event creation features:

–The following conditions define an event: a counter match condition, an input (or

output) condition such as an rising or falling edge or level, a combination of match

and/or input/output condition

–Selected events can limit, halt, start, or stop a counter or change its direction

–Events trigger state changes, output toggles, interrupts, and DMA transactions

–Match register 0 can be used as an automatic limit

–In bi-directional mode, events can be enabled based on the count direction

–Match events can be held until another qualifying event occurs

•State control features:

–A state is defined by events that can happen in the state while the counter is

running

–A state changes into another state as a result of an event

–Each event can be assigned to one or more states

–State variable allows sequencing across multiple counter cycles

8.16.3 WatchDog Timer (WDT)

The Watchdog timer (WDT) is a 32-bit timer clocked by 32 kHz clock. It is intended as a

recovery method in situations where the CPU is subjected to software upset. The WDT

resets the system when software fails to clear the WDT within the selected time interval.

The WDT is configured as either a watchdog timer or as a timer for general-purpose use.

If the watchdog function is not required in an application, it is possible to configure the

watchdog timer as an interval timer that can be used to generate interrupts at selected

time intervals. The maximum timeout interval is 1.5 days.

8.16.3.1 Features

•Programmable 32-bit timer

Product data sheet Rev. 1.2 — 19 April 2018 33 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•Internally resets chip if not reloaded during the programmable time-out period

•Flag to indicate Watchdog reset

8.16.4 RTC timer

The RTC block has three counters:

•15-bit counter running of 32 kHz clock, to generate second

•32-bit second counter to count seconds

•32-bit free running counter with associated match registers to generate interrupt and

forced reset

8.16.4.1 Features

•15-bit counter, to generate second:

–Operate on 32 kHz clock

–Programmable 1second interrupt

–Calibration function to compensate clock inaccuracy

•32-bit second counter to count seconds generated by the 15-bit counter

–Support configuration of second register on the fly

•32-bit free running counter and associated match register:

–Operate on 32 kHz clock

–Match register for interrupt generation

–Match register to generate reset, to be used as watchdog function

•Can wake up MCU from sleep mode and power down mode

•Can capture edge of input pins, to generate interrupts on either rising edge or falling

edge

8.17 Analog peripherals

8.17.1 16-bit Analog-to-Digital Converter (ADC)

The ADC is a 16-bit general-purpose Sigma-Delta (SD) type ADC that can sample up to

32 kilo sample per second, using up to eight different external input channels, with

multiple trigger sources.

8.17.1.1 Features

•16-bit sigma-delta analog to digital converter

•14-bit ENOB at 32 kHz sampling rate

•Integrated filter with 256 decimation rate. Additional software filtering by user can

achieve higher resolution

•Up to eight external single-ended inputs, which can be configured as differential mode

•Supports both single or burst mode

•Supports scan mode

•Multiple trigger resources

•A temperature sensor is connected as an alternative input of ADC

Product data sheet Rev. 1.2 — 19 April 2018 34 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•A battery monitor is connected as an alternative input of ADC

•ADC output buffer

•ADC done interrupt with DMA capability

8.17.2 Temperature sensor

The temperature sensor transducer uses an intrinsic pn-junction diode reference and

outputs a Complement To Absolute Temperature (VCTAT) voltage. The output voltage

varies inversely with device temperature with an absolute accuracy of better than ±2°C

over the full temperature range (-40°C to 85°C). The temperature sensor is only

approximately linear with a slight curvature. The output voltage is measured over different

ranges of temperatures and fit with linear-least-square lines.

After power-up, the temperature sensor output must be allowed to settle to its stable value

before it can be used as an accurate ADC input.

8.17.3 Battery monitor

The battery monitor is used to monitor the VCC supply. A voltage divider (VCC/4) is

integrated and connected to an ADC internal channel.

8.17.4 Analog comparators (ACMP0, ACMP1)

The QN908x integrates two analog voltage comparators. The analog comparator is used

to compare the voltage of two analog inputs. It generates a digital output to indicate the

higher input voltage. The positive input is always from the external pin. The negative input

can either be one of the selectable internal references or from an external pin. The

ultra-low power analog comparator triggers an interrupt and wakes up the devices from

power-down mode.

8.17.4.1 Features

•External negative input or configurable internal reference

•Comparator output can be read via register, or output to GPIO pins

•Configurable output polarity

•Can trigger an interrupt

•Can wake up the device from power-down mode

8.17.5 Digital-to-Analog Converter (DAC)

The DAC supports two modes:

•1 MHz 8-bit digital-to-analog conversion

•Sigma-delta modulated digital output with 20-bit digital input

8.17.5.1 Features

•1 MHz 8-bit Digital-to-analog conversion mode

•Sigma-delta modulation of 20-bit digital input data

–8-bit or 20-bit digital input from MCU or DMA, with gain control

–Internal generated 20-bit sin-wave with configurable frequency and amplitude

•Eight entry input data FIFO

Product data sheet Rev. 1.2 — 19 April 2018 35 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

•Input FIFO status indication with DMA capability

•Multiple trigger sources to start conversion:

–Timer timeout

–GPIO

–Software trigger

8.17.6 Capacitive sense

The QN908x integrates a capacitive sense module, by monitoring the frequency change

of the RC ring oscillator induced changing capacitance on external input pins. The

monitored output is stored in FIFO for further software processing, to realize flexible user

interface design. Smaller capacitance leads to higher frequency with bigger output data,

and vice versa.

8.17.6.1 Features

•Up to eight input channels

•Support hardware continuous detection to reduce power consumption

•Scan mode among selected channels

•Eight entry output data FIFO, with interrupt to MCU

•Output data with channel index for easy software processing

•Programmable frequency range with trade off for current consumption

•Low power mode, operating on 32 kHz clock allows one selected channel to wake up

the device from power down mode, with pre-defined threshold

8.18 CRC engine

The Cyclic Redundancy Check (CRC) generator with programmable polynomial settings

supports three common polynomials CRC-CCITT, CRC-16, and CRC-32.

8.19 Random Number Generator (RNG)

QN908x integrates a random number generator for security purpose. The Random

Number Generator (RNG) generates true non-deterministic random numbers for

generating keys, initialization vectors and other random number requirements.

8.20 Advanced Encryption Standard (AES) coprocessor

The Advanced Encryption Standard (AES) coprocessor allows encryption/decryption to be

performed with minimal CPU usage. The coprocessor supports 128-bit key.

8.21 Quadrature DECoder (QDEC)

The QN908x integrates two quadrature decoders.The decoder supports decoding of

quadrature encoded sensor signals. It provides a pulse train with 90 degrees phase

difference depending on whether the reference signal is leading or lagging, to determine

the direction of rotation. It is suitable for mechanical or optical sensors with optional input

debounce filter. The sample period and accumulation are configurable to provide flexibility

for application.

Product data sheet Rev. 1.2 — 19 April 2018 36 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.22 Fusion Signal Processor (FSP)

The QN908x integrates a co-processor (FSP) as hardware accelerator to offload the MCU

from routine computations in data fusion and machine learning algorithms. The FSP is on

the AHB bus. Once it is programmed and the input data is ready, it starts working and

generates interrupt once the operation is complete. The interrupt triggers the MCU or

DMA engine to fetch output data. To reduce current consumption for data transfers, the

FSP has direct access to system memory to read input data and write the resultant output.

8.22.1 Features

•Matrix operations: inverse, add, multiplication, dot multiplication, transpose

–Maximum size of matrix is 9 9

–Floating point operation

•Transform engine supports FFT, IFFT, DCT, IDT operations

–Configurable 64, 128, or 256 points operation

–Supports real/complex, and fixed point/floating point input data

–Supports real/complex, and fixed point/floating point output result

•Linear operation: FIR filter and correlation

–Up to 9 parallel FIR filters

–Each FIR filter has up to 15 taps with programmable coefficients. Supports both

fixed point and floating point operation

–Correlation between two sequences with length up to 256. Supports both fixed

point and floating point operation

•Non-linear operations include Sine, Cosine, Log, Sqrt, Cordic

–Supports both fixed point and floating point operation

•Statistics include Min, Max, Sum, Power Sum

–Supports both fixed-point and floating-point operation

–Supports up to 256 samples

8.23 Clock management

8.23.1 Clock sources

The QN908x supports two external and two internal clock sources:

•Internal 32 MHz oscillator

•Internal 32 kHz RC oscillator

•External high frequency crystal oscillator (32 MHz or 16 MHz)

•External 32.768 kHz crystal oscillator

8.23.1.1 Internal 32 MHz oscillator

The internal 32 MHz oscillator can be used as a clock that drives the CPU. Upon

power-up, or any chip reset, the QN908x uses the internal oscillator as the clock source.

Software switches to one of the available clock sources later.

Product data sheet Rev. 1.2 — 19 April 2018 37 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.23.1.2 Internal 32 kHz oscillator

The 32 kHz oscillator is a low-power internal oscillator. It can be used to provide a clock to

the sleep timer, RTC and to the entire chip. After proper calibration, the peripherals

including RTC and sleep timer can achieve the accuracy of 500 ppm.

8.23.1.3 External high frequency crystal oscillator

QN908x has 16/32 MHz external crystal with 50 ppm accuracy. The high frequency

crystal oscillator provides reference frequency for the radio transceiver. The load

capacitance is integrated to reduce BOM cost, configurable by software.

8.23.1.4 External 32.768 kHz crystal oscillator

A 32.768 kHz crystal oscillator is used to replace the internal 32 kHz oscillator where

accurate timing is needed. The 32 kHz clock with higher accuracy reduces power

consumption of Bluetooth Low Energy operation.

8.23.2 Clock generation

The system control block facilitates the clock generation. Many clocking variations are

possible. Figure 9 gives an overview of the potential clock options.

8.24 Code security

This feature of the QN908x allows the user to enable different levels of security in the

system so that access to the on-chip flash and use of the Serial Wire Debugger (SWD)

and In-System Programming (ISP) is restricted.

Fig 9. QN908x clock generation

Product data sheet Rev. 1.2 — 19 April 2018 38 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

8.25 Emulation and debugging

Debug and trace functions are integrated into the ARM Cortex-M4. Serial wire debug and

trace functions are supported. The ARM Cortex-M4 is configured to support up to eight

breakpoints and four watch points.

The ARM SYSREQ reset is supported and causes the processor to reset the peripherals,

execute the boot code, restart from address 0x0000 0000, and break at the user entry

point.

The SWD pins are multiplexed with other digital I/O pins. On reset, the pins assume the

SWD functions by default.

Product data sheet Rev. 1.2 — 19 April 2018 39 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

9. Limiting values

[1] The following applies to the limiting values:

a) This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive

static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated

maximum.

b) Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless

otherwise noted.

c) The limiting values are stress ratings only and operating the part at these values is not recommended and proper operation is not

guaranteed. The conditions for functional operation are specified in Table 18.

[2] Maximum/minimum voltage above the maximum operating voltage (see Table 18) and below ground that can be applied for a short time

(< 10 ms) to a device without leading to irrecoverable failure. Failure includes the loss of reliability and shorter lifetime of the device.

[3] The peak current is limited to 25 times the corresponding maximum current.

[4] Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kOhm series resistor.

[5] Charged device model.

[6] Including the voltage on outputs in 3-state mode.

[7] It is recommended to connect an overvoltage protection diode between the analog input pin and the voltage supply pin.

[8] Dependent on package type.

Table 10. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).[1]

Symbol Parameter Conditions Min Max Unit

VCC supply voltage on pin VCC [2] -0.3 3.6 V

VDD1 digital supply voltage on pin VDD1 [2] -0.3 3.6 V

VDD2 RF supply voltage on pin VDD2 [2] -0.3 3.6 V

VDD3 analog supply voltage on pin VDD3 [2] -0.3 3.6 V

VIinput voltage [6] -0.3 3.6 V

VIinput voltage RF pin -0.3 1.3 V

VIinput voltage USB_DM,

USB_DP pins

-0.3 3.6 V

VIA analog input voltage on digital pins configured for an

analog function

[7] -0.3 3.6 V

ICC total supply current per supply pin [3] -50mA

ISS total ground current per ground pin [3] -50mA

Ilatch I/O latch-up current (0.5VCC) < VI < (1.5VCC);

Tj < 125 C

-100mA

Vi(HFXO) 32/16 MHz oscillator

input voltage

[2] -0.3 3.6 V

Vi(LFXO) 32.768 kHz oscillator

input voltage

[2] -0.3 3.6 V

Tstg storage temperature [8] -65 150 C

Tj(max) maximum junction

temperature

-+150C

VESD electrostatic discharge

voltage

Human Body Model; all pins [4] -2kV

Charged Device Model; all pins

HVQFN48 [5] 500 V

WLCSP [5] -400V

Product data sheet Rev. 1.2 — 19 April 2018 40 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

10. Thermal characteristics

The average chip junction temperature, Tj (°C), can be calculated using the following

equation:

(1)

•Tamb = ambient temperature (°C),

•Rth(j-a) = the package junction-to-ambient thermal resistance (°C/W)

•PD = sum of internal and I/O power dissipation

The internal power dissipation is the product of IDD and VDD. The I/O power dissipation of

the I/O pins is often small and many times can be negligible. However it can be significant

in some applications.

Table 11. Thermal resistance

Symbol Parameter Conditions Max/Min Unit

HVQFN64 package

Rth(j-a) thermal resistance from

junction to ambient

JEDEC (4.5 in  4 in); still air 28±15% C/W

Rth(j-c) thermal resistance from

junction to case

4±15% C/W

WLCSP47 package

Rth(j-a) thermal resistance from

junction to ambient

JEDEC (4.5 in  4 in); still air 53±15% C/W

Rth(j-c) thermal resistance from

junction to case

1±15% C/W

TjTamb PDRth j a–

+=

Product data sheet Rev. 1.2 — 19 April 2018 41 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

11. Static characteristics

11.1 General operating conditions

[1] Typical ratings are not guaranteed. The values listed are for room temperature (25 °C), nominal supply voltages.

11.2 CoreMark data

[1] Characterized through bench measurements using typical samples.

[2] Compiler settings: Keil µVision v.5.14., optimization level 3, optimized for time on.

11.3 Power consumption

Power measurements in active, sleep, power down modes were performed under the

following conditions:

•All peripherals disabled

•Analog peripherals (ADC/DAC/ACMP/Capacitive Sense) powered down

•RF off

•Internal 32 MHz HFRCO powered down

Table 12. General operating conditions

Tamb =





C to +85



C, unless otherwise specified.

Symbol Parameter Conditions Min Typ[1] Max Unit

fclk clock frequency internal CPU/system clock - - 32 MHz

VCC supply voltage 1.62 - 3.6 V

VDD1 digital supply voltage 1.3 - 3.6 V

VDD2 RF supply voltage 1.3 - 3.6 V

VDD3 analog supply voltage 1.3 - 3.6 V

Vref ADC reference voltage External reference 1.2 - VCC V

External 32.768 kHz crystal oscillator pins

Vi32.768 kHz oscillator

input voltage

on pin XTAL32_IN 0 - 3.6 V

Vo32.768 kHz oscillator

output voltage

on pin XTAL32_OUT 0 - 3.6 V

External high frequency crystal oscillator pins

Vi16 / 32 MHz oscillator

input voltage

on pin XTAL_IN 0 - 3.6 V

Vo16 / 32 MHz oscillator

output voltage

on pin XTAL_OUT 0 - 3.6 V

Table 13. CoreMark score

Tamb =25



C, V

= 3.0V

Parameter Conditions Typ Unit

ARM Cortex-M4 in active mode

CoreMark score CoreMark code executed from SRAM [1][2] 2.3 (Iterations/s) / MHz

CoreMark score CoreMark code executed from flash [1][2] 2.3 (Iterations/s) / MHz

Product data sheet Rev. 1.2 — 19 April 2018 42 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Typical ratings are not guaranteed. Typical values listed are at room temperature (25 °C).

[2] Characterized through bench measurements using typical samples.

Table 14. Static characteristics: Power consumption in active modes

Tamb =





C to +



C, unless otherwise specified.

Symbol Parameter Conditions Min Typ[1] Max Unit

16 MHz crystal oscillator; DC-to-DC converter enabled, Vcc = 3.0 V

ICC supply current CoreMark code executed from RAM; flash powered down

CLK_AHB = 16 MHz [2] -670-A

CLK_AHB = 8 MHz [2] -480-A

CoreMark code executed from flash

CLK_AHB = 16 MHz [2] -870-A

CLK_AHB = 8 MHz [2] -590-A

32 MHz crystal oscillator; DC-to-DC converter enabled, Vcc = 3.0 V

ICC supply current CoreMark code executed from RAM; flash powered down

CLK_AHB = 32 MHz [2] -1080-A

CLK_AHB = 16 MHz [2] -750-A

CLK_AHB = 8 MHz [2] -560-A

CoreMark code executed from flash

CLK_AHB = 32 MHz [2] -1410-A

CLK_AHB = 16 MHz [2] -900-A

CLK_AHB = 8 MHz [2] -640-A

16 MHz crystal oscillator; DC-to-DC converter disabled, Vcc = VDD1 to VDD3 = 3.0 V

ICC supply current CoreMark code executed from RAM; flash powered down

CLK_AHB = 16 MHz [2] -1140-A

CLK_AHB = 8 MHz [2] -760-A

CoreMark code executed from flash;

CLK_AHB = 16 MHz [2] -1450-A

CLK_AHB = 8 MHz [2] -920-A

32 MHz crystal oscillator; DC-to-DC converter disabled, Vcc = VDD1 to VDD3 = 3.0 V

ICC supply current CoreMark code executed from RAM; flash powered down

CLK_AHB = 32 MHz [2] -2070-A

CLK_AHB = 16 MHz [2] -1370-A

CLK_AHB = 8 MHz [2] -980-A

CoreMark code executed from flash

CLK_AHB = 32 MHz [2] -2660-A

CLK_AHB = 16 MHz [2] -1650-A

CLK_AHB = 8 MHz [2] -1120-A

Product data sheet Rev. 1.2 — 19 April 2018 43 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Typical ratings are not guaranteed. Typical values listed are at room temperature (25 °C).

[2] Characterized through bench measurements using typical samples, with 50 ohm loading on RF port.

[3] Guaranteed by characterization, not tested in production.

[4] 2Mbps mode is only supported when AHB clock is 32MHz.

Table 15. Static characteristics: Bluetooth LE power consumption in active modes

Tamb =





C to +85



C, unless otherwise specified.

Symbol Parameter Conditions Min Typ[1][2] Max[3] Unit

32 MHz crystal oscillator, CLK_AHB = 16 MHz. Transmitter mode: fc = 2440 MHz, 1Mbps mode

ICC supply current DC-to-DC converter enabled, Vcc = 3 V

Tx power = 0 dBm - 3.5 - mA

Tx power = 4 dBm - 2.5 - mA

DC-to-DC converter disabled, Vcc = 3 V

Tx power = 0 dBm - 7.1 - mA

Tx power = 4 dBm - 5.0 - mA

32 MHz crystal oscillator, CLK_AHB = 32 MHz. Transmitter mode: fc = 2440 MHz, 2Mbps mode[4]

ICC supply current DC-to-DC converter enabled, Vcc = 3 V

Tx power = 0 dBm - 3.5 - mA

DC-to-DC converter disabled, Vcc = 3 V

Tx power = 0 dBm - 7.1 - mA

32 MHz crystal oscillator, CLK_AHB = 16 MHz. Receiver mode: fc = 2440 MHz, 1Mbps mode

ICC supply current DC-to-DC converter enabled, Vcc = 3 V

94 dBm RX sensitivity - 3.5 - mA

DC-to-DC converter disabled, Vcc = 3 V

95 dBm RX sensitivity - 7.2 - mA

32 MHz crystal oscillator, CLK_AHB = 32 MHz. Receiver mode: fc = 2440 MHz, 2Mbps mode[4]

ICC supply current DC-to-DC converter enabled, Vcc = 3 V

91.5 dBm RX sensitivity - 5.0 - mA

DC-to-DC converter disabled, Vcc = 3 V

92dBm RX sensitivity - 10.3 - mA

Product data sheet Rev. 1.2 — 19 April 2018 44 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Typical ratings are not guaranteed. Typical values listed are at room temperature (25 °C).

[2] Characterized through bench measurements using typical samples.

[3] Guaranteed by characterization, not tested in production.

Table 16. Static characteristics: Power consumption in sleep, and power-down modes

Tamb =





C to +85



C; unless otherwise specified.

Symbol Parameter Conditions Min Typ[1][2] Max[3] Unit

ICC supply current Sleep mode:

all SRAM on. Flash in standby mode. DC-to-DC converter enabled, Vcc = 3 V.

32 MHz crystal oscillator

CLK_AHB = 8 MHz - 350 - A

CLK_AHB = 16 MHz - 420 - A

Sleep mode:

all SRAM on. Flash in standby mode. DC-to-DC converter disabled, Vcc = 3 V.

32 MHz crystal oscillator

CLK_AHB = 8 MHz - 600 - A

CLK_AHB = 16 MHz - 750 - A

Power down 1 mode; all clocks off.

Flash is powered down. DC-DC disabled, Vcc = 3 V. Tamb =25C.

32 KB SRAM powered - 1.0 - A

64 KB SRAM powered - 1.2 - A

128 KB SRAM powered - 1.8 - A

Power down 0 mode; 32.768 kHz crystal oscillator on.

Flash is powered down. DC-DC disabled, Vcc = 3 V. Tamb =25C.

32 KB SRAM powered - 2.5 - A

64 KB SRAM powered - 2.8 - A

128 KB SRAM powered - 3.4 - A

Power down 0 mode; 32kHz on-chip RC oscillator on.

Flash is powered down. DC-DC disabled, Vcc = 3 V. Tamb =25C.

32 KB SRAM powered - 2.2 - A

64 KB SRAM powered - 2.3 - A

128 KB SRAM powered - 2.9 - A

Product data sheet Rev. 1.2 — 19 April 2018 45 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Typical ratings are not guaranteed. Typical values listed are at room temperature (25 °C), nominal supply voltages.

Table 17. Static characteristics: ADC power consumption

Tamb =





C to +85



C, unless otherwise specified.1.62 V



VCC



3.6 V.

Symbol Parameter Conditions Min Typ[1] Max Unit

ICC analog supply current 2 MHz sampling clock

Internal reference - 200 - A

PGA, gain = 1 - 330 - A

PGA, gain = 16 - 660 - A

Modulator - 270 - A

500 kHz sampling clock

Internal reference - 140 - A

PGA, gain = 1 - 220 - A

PGA, gain = 8 - 880 - A

Modulator - 100 - A

Product data sheet Rev. 1.2 — 19 April 2018 46 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

11.4 Pin characteristics

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltage.

[2] Guaranteed by design, not tested in production.

[3] Pin’s settings DRV_CTRL must be set to high to drive 4mA output.

Table 18. Static characteristics: pin characteristics

Tamb =





C to +85



C, unless otherwise specified. 1.62 V



VCC



3.6 V unless otherwise specified. Values tested in

production unless otherwise specified.

Symbol Parameter Conditions Min Typ[1] Max Unit

RSTN pin

VIH HIGH-level input voltage 0.8  VCC -3.6V

VIL LOW-level input voltage 0.5 - 0.3  VCC V

Vhys hysteresis voltage 0.05  VCC -- V

Standard I/O pins

Input characteristics

VIH HIGH-level input voltage 1.62 V  VCC < 3.6 V 0.7 VCC -- V

VIL LOW-level input voltage 1.62 V  VCC < 3.6 V - - 0.3VCC V

Vhys hysteresis voltage [2] 0.1  VCC -- V

Output characteristics

VOoutput voltage output active 0 - VCC V

VOH HIGH-level output voltage IOH =4 mA[3]; 1.62 V VCC <3.6 V V

CC-0.3 - - V

VOL LOW-level output voltage IOL =4 mA

[3]; 1.62 V VCC < 3.6 V - - 0.45 V

IOH HIGH-level output current 1.62 V VCC <3.6 V 4 - - mA

IOL LOW-level output current 1.62 V VCC <3.6 V 4 - - mA

RPD Pull-down register 1.62 V VCC <3.6 V - 170 - kΩ

RPU Pull-up resistor 1.62 V VCC <3.6 V - 90 - kΩ

Product data sheet Rev. 1.2 — 19 April 2018 47 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12. Dynamic characteristics

12.1 Start-up behavior

[1] See Figure 10.

[2] Based on characterization, not tested in production.

Table 19. Start-up characteristics

Tamb =





C to +85



C; 1.62 V



VCC



3.6 V

Symbol Parameter Conditions Min Typ Max Unit

ta32MHz RCO

start-up

[1][2] 10 s

tbPOR ready [1][2] 10 s

tcVDD1~3 ramp

[1][2] 10 s

tdPMU supply

ramp up

[1][2] 1ms

teRSTN delay [1][2] 1ms

tfboot time [1][2] 218 s

Fig 10. Start-up timing

Product data sheet Rev. 1.2 — 19 April 2018 48 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12.2 Flash memory

[1] Number of erase/program cycles.

12.3 I/O pins

[1] Simulated data.

[2] Simulated using 10 cm of 50  PCB trace with 5 pF receiver input. Rise and fall times measured between

80 % and 20 % of the full output signal level.

[3] The slew rate is configured by register. See the QN9080 user manual.

[4] CL = 20 pF. Rise and fall times measured between 90 % and 10 % of the full input signal level.

Table 20. Flash characteristics

Tamb =





C to +85



C, unless otherwise specified. 1.62 V



VCC



3.6 V

Symbol Parameter Conditions Min Typ Max Unit

Nendu endurance page erase/program [1] 10000 - - cycles

mass erase/program 10000 - - cycles

tret retention time powered 10 - - years

unpowered 10 - - years

ter erase time page/mass - - 100 ms

tprog programming

time

word - - 20 ms

Table 21. Dynamic characteristic: I/O pins[1]

Tamb =





C to +85



C; 1.62 V



VCC



3.6 V

Symbol Parameter Conditions Min Typ Max Unit

Standard I/O pins

trrise time pin configured as output; standard mode [2][3] --2.4ns

pin configured as output; high drive

mode

[2][3] --1.6ns

tffall time pin configured as output; standard mode [2][3] --4.2ns

pin configured as output; high drive

mode

[2][3] --1.6ns

trrise time pin configured as input [4] --2ns

tffall time pin configured as input [4] --2ns

Product data sheet Rev. 1.2 — 19 April 2018 49 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12.4 Wake-up process

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply

voltages. Based on characterization. Not tested in production.

[2] The wake-up time measured is the time between when a GPIO input pin is triggered to wake the device up

from the low power modes and from when a GPIO output pin is set in the interrupt service routine (ISR)

wake-up handler.

[3] The time measured is the time between when a GPIO input pin is triggered to when a peripheral starts

advertising.

[4] The wake-up time measured is the time between when the RSTN pin is de-asserted to wake the

device up and when a GPIO output pin is set in the reset handler.

[5] The wake-up time measured is the time between power on and when a GPIO output pin is set in the reset

handler.

[6] 16 MHz HFXO enabled, all peripherals off; CLK_AHB=16 MHz.

12.5 Internal 32MHz oscillator

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply

voltages.

Table 22. Dynamic characteristic: Typical wake-up times from low power modes

VCC = 3.0 V;Tamb =25



C; using 32MHz Oscillator as the system clock.

Symbol Parameter Conditions Min Typ[1] Max Unit

twake wake-up

time

from Sleep mode, waked up by

GPIO interrupt, to code executing

in flash

[2][5] -3 s

from power down mode, waked up

by GPIO interrupt, to code

executing in flash

[2][5]

-10 s

from power down mode, waked up

by GPIO interrupt, to Bluetooth

advertising

[3][6]

-7 ms

from RSTN pin deasserted, to

code executing in flash

[4][5] -218 s

from power-up, to code executing

in flash

[5][5] 1.2 ms

Table 23. Dynamic characteristic: internal 32MHz oscillator

Tamb =25



C; 1.62 V



VCC



3.6 V.

Symbol Parameter Conditions Min Typ[1] Max Unit

fosc(HFRCO) oscillator frequency - 32 - MHz

TC temperature coefficient - 0.04 - %/C

foscVCC oscillator frequency

variation with supply

voltage

-3-%/V

tstart start-up time - - 2 s

Icc current consumption - 60 - A

Product data sheet Rev. 1.2 — 19 April 2018 50 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12.6 External high frequency crystal oscillator

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply

voltages.

12.7 External 32.768 kHz crystal oscillator

See Section 13.5 for connecting the 32.768 kHz oscillator to an external clock source.

[1] Parameters are valid over operating temperature range unless otherwise specified.

Table 24. Dynamic characteristic: external high frequency crystal oscillator

Tamb =25



C; 1.62 V



VCC



3.6 V.

Symbol Parameter Conditions Min Typ[1] Max Unit

fxtal crystal frequency - 16 - MHz

-32-MHz

fxtal crystal frequency

accuracy

50 - +50 ppm

ESR equivalent serial

resistance

16 MHz, 9 pF

load

- - 100 

32 MHz, 9 pF

load

- - 100 

CLload capacitance 5 12 pF

tstart start-up time 16 MHz, 9 pF

load

- - 700 s

32 MHz, 9 pF

load

- - 400 s

Icc current consumption 16 MHz, 9 pF

load

- 100 - A

32 MHz, 9 pF

load

- 200 - A

Table 25. Dynamic characteristic: LFXO

Tamb =





C to +85



C; 1.62



VCC



3.6[1]

Symbol Parameter Conditions Min Typ[1] Max Unit

fxtal input frequency - - 32.768 kHz

fxtal Frequency tolerance -50 - +50 ppm

ESR Equivalent serial

resistance

9 pF load - - 100 k

CLLoad capacitance 5 12 pF

tstart(LFXO) Start-up time 9 pF load - - 1 S

Icc(LFXO) Current consumption 9 pF load - 1 - A

Product data sheet Rev. 1.2 — 19 April 2018 51 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12.8 Internal 32 kHz oscillator

[1] Typical ratings are not guaranteed. The values listed are at nominal supply voltages.

[2] The typical frequency spread over processing and temperature (Tamb = -40 °C to +85 °C) is ±40 %.

12.9 SPI interfaces

In master mode, the maximum supported bit rate is 16 Mbit/s. In slave mode, assuming a

set-up time of 4 ns for the external device and neglecting any PCB trace delays, the

maximum supported bit rate is 16 Mbit/s. The actual bit rate depends on the delays

introduced by the external trace and the external device.

[1] Based on simulated values.

Table 26. Dynamic characteristics: internal 32 kHz oscillator

Tamb =





C to +85



C; 1.62



VCC



3.6[1]

Symbol Parameter Min Typ[1] Max Unit

fosc oscillator frequency [2] - 32 - kHz

fosc(acc) clock accuracy after

calibration

-500 +500 ppm

TC temperature coefficient - 0.04 - %/C

foscVCC oscillator frequency

variation with supply

voltage

-3 - %/V

tstart start-up time - - 1 mS

Icc current consumption - 1 - A

Table 27. SPI dynamic characteristics[1]

Tamb =





C to 85



C; VCC = 1.62 V to 3.6 V; CL = 30 pF balanced loading on all pins; Input slew =

1 ns; Parameters sampled at the 90 % and 10 % level of the rising or falling edge.

Symbol Parameter Conditions Min Max Unit

SPI master

tDS data set-up time 5 - ns

tDH data hold time 5 - ns

tv(Q) data output valid time 47ns

SPI slave

tDS data set-up time 7 - ns

tDH data hold time 5 - ns

tv(Q) data output valid time 216ns

Product data sheet Rev. 1.2 — 19 April 2018 52 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Tcy(clk) = CLK_AHB/DIVVAL with CLK_AHB = AHB bus clock frequency. DIVVAL is the SPI clock divider. See the QN908x User

manual.

Fig 11. SPI master timing

SCK (CPOL = 0)

MOSI (CPHA = 1)

SSEL

MISO (CPHA = 1)

cy(clk)

v(Q)

DATA VALID (LSB) DATA VALID

v(Q)

SCK (CPOL = 1)

DATA VALID (LSB) DATA VALID

MOSI (CPHA = 0)

MISO (CPHA = 0) t

DATA VALID (MSB) DATA VALID (MSB)DATA VALID

DATA VALID (LSB)

v(Q)

DATA VALID (MSB) DATA VALID

v(Q)

aaa-014969

DATA VALID (MSB)

DATA VALID (MSB) IDLE

IDLE

DATA VALID (MSB)

Product data sheet Rev. 1.2 — 19 April 2018 53 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Fig 12. SPI slave timing

SCK (CPOL = 0)

MISO (CPHA = 1)

SSEL

MOSI (CPHA = 1)

cy(clk)

v(Q)

DATA VALID (LSB) DATA VALID

v(Q)

SCK (CPOL = 1)

DATA VALID (LSB) DATA VALID

MISO (CPHA = 0)

MOSI (CPHA = 0) t

DATA VALID (MSB) DATA VALID (MSB)DATA VALID

DATA VALID (LSB)

v(Q)

DATA VALID (MSB) DATA VALID

v(Q)

aaa-014970

DATA VALID (MSB)

IDLE

DATA VALID (MSB)

Product data sheet Rev. 1.2 — 19 April 2018 54 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

12.10 USART interface

In master and slave synchronous modes, the maximum supported bit rate is 1

Mbit/sec.The actual bit rate depends on the delays introduced by the external trace, the

external device, and capacitive loading.

[1] Based on simulated values.

12.11 SPIFI

Table 28. USART dynamic characteristics[1]

Tamb =





C to 85



C; VCC = 1.62V to 3.6 V; CL = 30 pF balanced loading on all pins; Input slew =

1 ns; Parameters sampled at the 90 % and 10 % level of the rising or falling edge.

Symbol Parameter Conditions Min Max Unit

USART master (in synchronous mode)

tsu(D) data input set-up time 21 - ns

th(D) data input hold time 2 - ns

tv(Q) data output valid time 512ns

USART slave (in synchronous mode)

tsu(D) data input set-up time 6 - ns

th(D) data input hold time 6 - ns

tv(Q) data output valid time 221ns

In master mode, Tcy(clk) = CLK_AHB/BRGVAL. See the QN908x user manual.

Fig 13. USART timing

Un_SCLK (CLKPOL = 0)

TXD

RXD

Tcy(clk)

tsu(D) th(D)

tv(Q)

START BIT0

vQ)

Un_SCLK (CLKPOL = 1)

START BIT0 BIT1

BIT1

aaa-015074

Table 29. Dynamic characteristics: SPIFI[1]

Tamb =





C to 85



C; VCC = 1.62 V to 3.6 V; CL = 30 pF balanced loading on all pins; Input slew

= 1 ns; Parameters sampled at the 90 % and 10 % level of the rising or falling edge.

Symbol Parameter Conditions Min Typ Max Unit

Tcy(clk) clock cycle time - 62.5 - ns

SPIFI

tDS data set-up time 11 - - ns

tDH data hold time 4 - - ns

tv(Q) data output valid time -5 - 7 ns

Product data sheet Rev. 1.2 — 19 April 2018 55 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Based on simulated values.

12.12 SCTimer output timing

12.13 USB interface characteristics

Fig 14. SPI flash interface timing (mode 0)

SPIFI_SCK

SPIFI data out

SPIFI data in

cy(clk)

v(Q)

DATA VALID DATA VALID

h(Q)

DATA VALID DATA VALID

002aah409

Table 30. SCTimer output dynamic characteristics

Tamb =





C to 85



C; 1.62 V



VCC



3.6 V CL = 30 pF. Simulated skew (over process, voltage,

and temperature) of any two SCT fixed-pin output signals; sampled at 10 % and 90 % of the signal

level; values guaranteed by design.

Symbol Parameter Conditions Min Typ Max Unit

tsk(o) output skew time - - - 1.1 ns

Table 31. Dynamic characteristics: USB pins (full speed)

CL = 50 pF; Rpu = 1.5 k



on D+ to VCC, unless otherwise specified; 3.0 V



VCC



3.6 V.

Symbol Parameter Conditions Min Typ Max Unit

trrise time CL=50pF, 10 %

to 90 %

4- 20ns

tffall time CL=50pF, 10 %

to 90 %

4- 20ns

tFRFM differential rise and fall time match-

ing

tr/t

f90 - 111 %

VCRS output signal crossover voltage 1.3 - 2.0 V

tFEOPT source SE0 interval of EOP see Figure 15 160 - 175 ns

tFDEOP source jitter for differential transition

to SE0 transition

see Figure 15 -2 - +5 ns

tJR1 receiver jitter to next transition -18.5 - +18.5 ns

Product data sheet Rev. 1.2 — 19 April 2018 56 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1] Characterized but not implemented as production test. Guaranteed by design.

tJR2 receiver jitter for paired transitions 10 % to 90 % -9 - +9 ns

tEOPR1 EOP width at receiver must reject as

EOP; see

Figure 15

[1] 40 - - ns

tEOPR2 EOP width at receiver must accept as

EOP; see

Figure 15

[1] 82 - - ns

Table 31. Dynamic characteristics: USB pins (full speed) …continued

CL = 50 pF; Rpu = 1.5 k



on D+ to VCC, unless otherwise specified; 3.0 V



VCC



3.6 V.

Symbol Parameter Conditions Min Typ Max Unit

Fig 15. Differential data-to-EOP transition skew and EOP width

002aab561

TPERIOD

differential

data lines

crossover point

source EOP width: tFEOPT

receiver EOP width: tEOPR1, tEOPR2

crossover point

extended

differential data to

SE0/EOP skew

n × TPERIOD + tFDEOP

Product data sheet Rev. 1.2 — 19 April 2018 57 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

13. RF characteristics

13.1 Receiver

[1]Channel BW offset equals to 1MHz.

Table 32. Receiver characteristics

Tamb =25



C; based on characterization; not tested in production. VCC = 3 V; fc = 2440 MHz; BER <

0.1 %

Symbol Parameter Conditions Min Typ Max Unit

SRX RX sensitivity

high performance

mode with DC-to-DC

converter disabled

-95 - dBm

low power mode with

DC-to-DC converter

-94 - dBm

SRX2M

RX sensitivity

(2Mbps)

DC-to-DC converter

disabled

--92-dBm

DC-to-DC converter

enabled

- -91.5 - dBm

SGFSK GFSK RX

sensitivity

250kbps,

GFSK-BT=0.5,

h=0.5

-95 - dBm

Pi(max) maximum input

power

-0-dBm

C/I carrier-to-interfere

nce ratio

co-channel - 6 - dB

adjacent channel @

1 MHz

-4-dB

alternate channel @

2 MHz

-41 - dB

image image rejection - 41 - dB

sup(oob)

out-of-band

suppression

30 MHz to 2000 MHz 1- -dBm

2003 MHz to 2399

MHz

10 - - dBm

2484 MHz to 2997

MHz

10 - - dBm

3 GHz to 12.75 GHz 10 - - dBm

Table 33.Receiver specification with GFSK modulations (Data Rate <= 1Mbps)

Tamb =25



C; based on characterization; not tested in production. VCC = 3 V; fc = 2440 MHz; BER < 0.1 %

GFSK BT=0.5,h=0.5 Adjacent/Alternate Channel Selectivity (dB)

Data Rate

(kbps)

Typical

Sensitivity

(dBm)

Desired

signal level

(dBm)

Interferer

at -/+1*

channel

BW offset[1]

Interferer

at -/+2*

channel

BW offset

Interferer

at -/+3*

channel

BW offset

Interferer

at -/+4*

channel

BW offset

Co-

channel

1000 -95 -67 -6 -43 -46 -49 5

500 -95 -67 -5 -31 -33 -35 4

250 -95 -67 -9 -32 -36 -42 0

Product data sheet Rev. 1.2 — 19 April 2018 58 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[1]Channel BW offset equals to 1MHz.

13.2 Transmitter

Table 34.Receiver specification with GFSK modulations (Data Rate = 2Mbps)

Tamb =25



C; based on characterization; not tested in production. VCC = 3 V; fc = 2440 MHz; BER < 0.1 %

GFSK BT=0.5, h=0.5 Adjacent/Alternate Channel Selectivity (dB)

Data Rate

(kbps)

Typical

Sensitivity

(dBm)

Desired

signal level

(dBm)

Interferer

at -/+2*

channel

BW offset[1]

Interferer

at -/+4*

channel

BW offset

Interferer

at -/+6*

channel

BW offset

Interferer

at -/+8*

channel

BW offset

Co-

channel

2000 -92 -67 -8 -44 -46 -51 5

Table 35. Transmitter characteristics

Tamb =25



C; based on characterization; not tested in production.VCC = 3 V; fc = 2440 MHz

Symbol Parameter Conditions Min Typ Max Unit

fo(RF) RF output

frequency

2400 - 2483.5 MHz

CS channel

separation

-2-MHz

Pooutput power TX power 20 - +2 dBm

Product data sheet Rev. 1.2 — 19 April 2018 59 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

14. Analog characteristics

14.1 BOD

Table 36. BOD static characteristics

Tamb =25



C; based on characterization; not tested in production.

Symbol Parameter Conditions Min Typ Max Unit

Vth threshold voltage interrupt level 0

assertion - 2.05 - V

de-assertion - 2.35 - V

reset level 0

assertion - 1.50 - V

Vth threshold voltage interrupt level 1

assertion - 2.45 - V

de-assertion - 2.80 - V

reset level 1

assertion - 1.85 - V

Vth threshold voltage interrupt level 2

assertion - 2.70 - V

de-assertion - 3.10 - V

reset level 2

assertion - 2.0 - V

Vth threshold voltage interrupt level 3

assertion - 3.05 - V

de-assertion - 3.45 - V

reset level 3

assertion - 2.35 - V

Product data sheet Rev. 1.2 — 19 April 2018 60 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

14.2 ADC

[1] Characterized but not implemented as production test. Guaranteed by design.

[2] CMRR degrades severely if Vcc < 3V

[3] BG_SEL = 0x08

Table 37.16-bit ADC static characteristics

Tamb =





C to +85



C; 1.62 V



VCC



3.6 V; VREFP = VDDA; VSSA = VREFN = GND. ADC calibrated at Tamb =



Symbol Parameter Conditions Min Typ Max Unit

VIinput voltage range

(VINP-VINN)

VREF = 1.2 V - 0.8 

VREF/(

PGA_G

AIN

ADC_G

AIN)

VREF = VCC -0.5 

VREF/(

PGA_G

AIN 

ADC_G

AIN)

Ciinput capacitance - 10 - pF

Ziinput impedance DC signal, PGA enabled >10 - M

DC signal, PGA bypassed,

2MHz sampling clock

-50-k

fclk(ADC) ADC sampling

clock frequency

--2MHz

fcoutput date rate? - - 31.25 ksps

ENOB Effective number 500 kHz sampling clock,

over-sampling rate = 256,

data rate = 1.9 kHz, all gains,

all temperature, all Vcc

14.2 15.2 - bit

2 MHz sampling clock,

over-sampling rate = 256,

data rate = 7.8 kHz, all gains,

all temperature, all Vcc

12.9 14.4 - bit

INL integral

non-linearity

PGA enabled - +/-30[1] +/-200 ppm

PGA bypassed - +/-60[1] +/-250 ppm

EOgain error - 2 4 %

CMRR common mode

rejection

at DC [2] 20 50 - dB

PSRR power-supply

rejection

at DC -40 -50 - dB

VBG ( 25 C) 1.2V Bandgap

voltage reference

Tamb =25C[3][4] 1.216 1.222 1.227 V

VBG

(-40~85 C)

1.2V Bandgap

voltage reference

Tamb = -40~85 C[3][4] 1.211 - 1.232 V

BG_SEL steps [4] -3-mV

Product data sheet Rev. 1.2 — 19 April 2018 61 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

[4] All values are obtained at Vcc = 3V

14.3 Temperature sensor

[1] Typical value is obtained at Tamb =25C, VCC / VDD =3V

14.4 DAC

[1] Characterized but not implemented as production test. Guaranteed by design.

14.5 Analog comparator

Table 38. Temperature sensor static and dynamic characteristics

VDD = VDDA = 1.62 V to 3.6 V

Symbol Parameter Conditions Min Typ[1] Max Unit

Tm (C) range Tamb = 40 C to +85 C -40- +85C

dTm (C) error with 1-point calibration - 1 3 C

without calibration 3 5 C

Table 39. DAC static and dynamic characteristics

VCC = 1.62 V to 3.6 V

Symbol Parameter Conditions Min Typ Max Unit

resolution - 8 - bits

DNL differential

nonlinearity

[1] -0.2- LSB

INL integral

nonlinearity

[1] -0.2- LSB

bandwidth of the

internal low pass

filter

- 150 - kHz

Vout output voltage

range

0.7 - VCC

0.7

full scale output

voltage swing

step size

40 - 197 mV

capacitive load

stability

RL=1 k-10- pF

frequency of

sample

-- 1 MHz

Table 40.Analog comparator static and dynamic characteristics

VCC = 1.62 V to 3.6 V

Symbol Parameter Conditions Min Typ Max Unit

Viinput voltage 0 - VCC V

ICC(int)A analog internal

supply current

-0.3- A

Vhys hysteresis use VBG as reference voltage

(register bit

ACMP_VREF_SEL=1,ACM_REF=8)

35 40 55 mV

Product data sheet Rev. 1.2 — 19 April 2018 62 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

14.5.1 Capacitive sense

Table 41. Capacitive sense static and dynamic characteristics

VDD = 1.62 V to 3.6 V

Symbol Parameter Conditions Min Typ Max Unit

ICC supply current - 2.6 - A

noise level - 0.2% - /base

cap

temperature

coefficient

-0.02- %/C

input cap range - - 100 pF

Product data sheet Rev. 1.2 — 19 April 2018 63 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

15. Application information

15.1 Schematic for QN9080 with DC-to-DC converter

Fig 16. QN9080 typical application schematic with DC-to-DC converter

Product data sheet Rev. 1.2 — 19 April 2018 64 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

15.2 Schematic for QN9080 without DC-to-DC converter

Fig 17. QN9080 typical application schematic without DC-to-DC converter

Product data sheet Rev. 1.2 — 19 April 2018 65 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

15.3 Schematic for QN9083 with DC-to-DC converter

Fig 18. QN9083 typical application schematic with DC-to-DC converter

Product data sheet Rev. 1.2 — 19 April 2018 66 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

15.4 Schematic for QN9083 without DC-to-DC converter

Fig 19. QN9083 typical application schematic without DC-to-DC converter

Product data sheet Rev. 1.2 — 19 April 2018 67 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

15.5 QN908x external component list

Table 42. External component list

Component Description Value

C4 capacitor for RF harmonic filter 1.8 pF

C5 capacitor for RF harmonic filter 1.8 pF

C1, C3, C7, C10 supply decoupling capacitors 100 nF, X5R, 10 %, 6.3 V, 0402

C6 supply decoupling capacitor 4.7 F, X 5R, 10 %, 6.3 V, 0402

C2 supply decoupling capacitor 1 F, X7 R, 5 %, 6.3 V, 0402

C8 capacitor used for reset 0.1 F, 5 %, 6.3 V, 0402

C9 capacitor used for RF front-end 8.2 pF, C0G,0.5pF, 50V, 0402

L2 inductor for RF harmonic filter 3.3 nH

L1 chip inductor for DC-to-DC converter 10 H

L3 chip inductor for DC-to-DC converter 10 nH

Y1 crystal 16 MHz or 32 MHz

Y2 crystal 32.768 kHz

Product data sheet Rev. 1.2 — 19 April 2018 68 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

16. Package outline

Fig 20. HVQFN48 package outline

Product data sheet Rev. 1.2 — 19 April 2018 69 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Fig 21. WLCSP Package outline

Product data sheet Rev. 1.2 — 19 April 2018 70 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

17. Soldering

Fig 22. HVQFN48 Soldering footprint

Product data sheet Rev. 1.1 — 19 April 2018 71 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Fig 23. WLCSP Soldering footprint

Product data sheet Rev. 1.1 — 19 April 2018 72 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

18. Abbreviations

Table 43. Abbreviations

Acronym Description

AHB Advanced High-performance Bus

APB Advanced Peripheral Bus

API Application Programming Interface

DMA Direct Memory Access

GPIO General-Purpose Input Output

LSB Least Significant Bit

MCU MicroController Unit

SPI Serial Peripheral Interface

USART Universal Asynchronous Receiver/Transmitter

TTL Transistor-Transistor Logic

ENOB Equivalent Number of Bits

Product data sheet Rev. 1.1 — 19 April 2018 73 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

19. Revision history

Table 44. Revision history

Document ID Release date Substantial changes Supersedes

QN908x Rev.1.2 04/2018 Add Silicon revision in Table 2. QN908x v.1.1

QN908x Rev.1.1 02/2018 Append characteristics data QN908x v.1.0

QN908x Rev.1.0 07/2017 Initial Release -

Product data sheet Rev. 1.1 — 19 April 2018 74 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

20. Legal information

20.1 Data sheet status

[1] Please consult the most recently issued document before initiating or completing a design.

[2] The term ‘short data sheet’ is explained in section “Definitions”.

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status

information is available on the Internet at URL http://www.nxp.com.

20.2 Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences of

use of such information.

Short data sheet — A short data sheet is an extract from a full data sheet

with the same product type number(s) and title. A short data sheet is intended

for quick reference only and should not be relied upon to contain detailed and

full information. For detailed and full information see the relevant full data

sheet, which is available on request via the local NXP Semiconductors sales

office. In case of any inconsistency or conflict with the short data sheet, the

full data sheet shall prevail.

Product specification — The information and data provided in a Product

data sheet shall define the specification of the product as agreed between

NXP Semiconductors and its customer, unless NXP Semiconductors and

customer have explicitly agreed otherwise in writing. In no event however,

shall an agreement be valid in which the NXP Semiconductors product is

deemed to offer functions and qualities beyond those described in the

Product data sheet.

20.3 Disclaimers

Limited warranty and liability — Information in this document is believed to

be accurate and reliable. However, NXP Semiconductors does not give any

representations or warranties, expressed or implied, as to the accuracy or

completeness of such information and shall have no liability for the

consequences of use of such information. NXP Semiconductors takes no

responsibility for the content in this document if provided by an information

source outside of NXP Semiconductors.

In no event shall NXP Semiconductors be liable for any indirect, incidental,

punitive, special or consequential damages (including - without limitation - lost

profits, lost savings, business interruption, costs related to the removal or

replacement of any products or rework charges) whether or not such

damages are based on tort (including negligence), warranty, breach of

contract or any other legal theory.

Notwithstanding any damages that customer might incur for any reason

whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards

customer for the products described herein shall be limited in accordance

with the Terms and conditions of commercial sale of NXP Semiconductors.

Right to make changes — NXP Semiconductors reserves the right to make

changes to information published in this document, including without

limitation specifications and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors and its suppliers accept no liability for

inclusion and/or use of NXP Semiconductors products in such equipment or

applications and therefore such inclusion and/or use is at the customer’s own

risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes no

representation or warranty that such applications will be suitable for the

specified use without further testing or modification.

Customers are responsible for the design and operation of their applications

and products using NXP Semiconductors products, and NXP Semiconductors

accepts no liability for any assistance with applications or customer product

design. It is customer’s sole responsibility to determine whether the NXP

Semiconductors product is suitable and fit for the customer’s applications and

products planned, as well as for the planned application and use of

customer’s third party customer(s). Customers should provide appropriate

design and operating safeguards to minimize the risks associated with their

applications and products.

NXP Semiconductors does not accept any liability related to any default,

damage, costs or problem which is based on any weakness or default in the

customer’s applications or products, or the application or use by customer’s

third party customer(s). Customer is responsible for doing all necessary

testing for the customer’s applications and products using NXP

Semiconductors products in order to avoid a default of the applications and

the products or of the application or use by customer’s third party

customer(s). NXP does not accept any liability in this respect.

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those given in

the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

Terms and conditions of commercial sale — NXP Semiconductors

products are sold subject to the general terms and conditions of commercial

sale, as published at http://www.nxp.com/profile/terms, unless otherwise

agreed in a valid written individual agreement. In case an individual

agreement is concluded only the terms and conditions of the respective

agreement shall apply. NXP Semiconductors hereby expressly objects to

applying the customer’s general terms and conditions with regard to the

purchase of NXP Semiconductors products by customer.

No offer to sell or license — Nothing in this document may be interpreted or

construed as an offer to sell products that is open for acceptance or the grant,

conveyance or implication of any license under any copyrights, patents or

other industrial or intellectual property rights.

Document status[1][2] Product status[3] Definition

Objective [short] data sheet Development This document contains data from the objective specification for product development.

Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.

Product [short] data sheet Production This document contains the product specification.

Product data sheet Rev. 1.1 — 19 April 2018 75 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

Non-automotive qualified products — Unless this data sheet expressly

states that this specific NXP Semiconductors product is automotive qualified,

the product is not suitable for automotive use. It is neither qualified nor tested

in accordance with automotive testing or application requirements. NXP

Semiconductors accepts no liability for inclusion and/or use of

non-automotive qualified products in automotive equipment or applications.

In the event that customer uses the product for design-in and use in

automotive applications to automotive specifications and standards, customer

(a) shall use the product without NXP Semiconductors’ warranty of the

product for such automotive applications, use and specifications, and (b)

whenever customer uses the product for automotive applications beyond

NXP Semiconductors’ specifications such use shall be solely at customer’s

own risk, and (c) customer fully indemnifies NXP Semiconductors for any

liability, damages or failed product claims resulting from customer design and

use of the product for automotive applications beyond NXP Semiconductors’

standard warranty and NXP Semiconductors’ product specifications.

20.4 Trademarks

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

I2C-bus — logo is a trademark of NXP B.V.

21. Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 19 April 2018

Document identifier: QN908x

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

22. Tables

Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . .5

Table 2. Ordering options . . . . . . . . . . . . . . . . . . . . . . . . .5

Table 3. Device revision table. . . . . . . . . . . . . . . . . . . . . .6

Table 4. Pin description . . . . . . . . . . . . . . . . . . . . . . . . .10

Table 5. Termination of unused pins. . . . . . . . . . . . . . . .18

Table 6. Pin states in different power modes . . . . . . . . .18

Table 7. SRAM memory blocks . . . . . . . . . . . . . . . . . . .20

Table 8. Memory map options . . . . . . . . . . . . . . . . . . . .21

Table 9. Peripheral configuration in reduced power modes

Table 10. Limiting values . . . . . . . . . . . . . . . . . . . . . . . . .39

Table 11. Thermal resistance . . . . . . . . . . . . . . . . . . . . . .40

Table 12. General operating conditions . . . . . . . . . . . . . .41

Table 13. CoreMark score . . . . . . . . . . . . . . . . . . . . . . . .41

Table 14. Static characteristics: Power consumption in

active modes . . . . . . . . . . . . . . . . . . . . . . . . . .42

Table 15. Static characteristics: Bluetooth LE power

consumption in active modes . . . . . . . . . . . . . .43

Table 16. Static characteristics: Power consumption in

sleep, and power-down modes. . . . . . . . . . . . .44

Table 17. Static characteristics: ADC power consumption45

Table 18. Static characteristics: pin characteristics . . . . .46

Table 19. Start-up characteristics . . . . . . . . . . . . . . . . . . .47

Table 20. Flash characteristics. . . . . . . . . . . . . . . . . . . . .48

Table 21. Dynamic characteristic: I/O pins[1] . . . . . . . . . .48

Table 22. Dynamic characteristic: Typical wake-up times

from low power modes . . . . . . . . . . . . . . . . . . .49

Table 23. Dynamic characteristic: internal 32MHz oscillator

Table 24. Dynamic characteristic: external high frequency

crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . .50

Table 25. Dynamic characteristic: LFXO . . . . . . . . . . . . .50

Table 26. Dynamic characteristics: internal 32 kHz oscillator

Table 27. SPI dynamic characteristics[1]. . . . . . . . . . . . . .51

Table 28. USART dynamic characteristics[1] . . . . . . . . . .54

Table 29. Dynamic characteristics: SPIFI[1] . . . . . . . . . . .54

Table 30. SCTimer output dynamic characteristics . . . . .55

Table 31. Dynamic characteristics: USB pins (full speed) .

Table 32. Receiver characteristics . . . . . . . . . . . . . . . . . .57

Table 33. Receiver specification with GFSK modulations

(Data Rate <= 1Mbps) . . . . . . . . . . . . . . . . . . .57

Table 34. Receiver specification with GFSK modulations

(Data Rate = 2Mbps) . . . . . . . . . . . . . . . . . . . .58

Table 35. Transmitter characteristics . . . . . . . . . . . . . . . .58

Table 36. BOD static characteristics. . . . . . . . . . . . . . . . .59

Table 37. 16-bit ADC static characteristics . . . . . . . . . . .60

Table 38. Temperature sensor static and dynamic

characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 61

Table 39. DAC static and dynamic characteristics. . . . . . 61

Table 40. Analog comparator static and dynamic

characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 61

Table 41. Capacitive sense static and dynamic

characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 42. External component list . . . . . . . . . . . . . . . . . . 67

Table 43. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 72

Table 44. Revision history . . . . . . . . . . . . . . . . . . . . . . . . 73

Product data sheet Rev. 1.1 — 19 April 2018 77 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

23. Figures

Fig 1. HVQFN48 package marking . . . . . . . . . . . . . . . . .5

Fig 2. WLCSP47 package marking . . . . . . . . . . . . . . . . .5

Fig 3. QN908x block diagram . . . . . . . . . . . . . . . . . . . . .7

Fig 4. HVQFN48 pin configuration . . . . . . . . . . . . . . . . . .8

Fig 5. WLCSP pin configuration. . . . . . . . . . . . . . . . . . . .9

Fig 6. QN908x memory mapping . . . . . . . . . . . . . . . . .23

Fig 7. QN908x APB memory map . . . . . . . . . . . . . . . . .24

Fig 8. QN908x power supply . . . . . . . . . . . . . . . . . . . . .25

Fig 9. QN908x clock generation . . . . . . . . . . . . . . . . . .37

Fig 10. Start-up timing . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Fig 11. SPI master timing . . . . . . . . . . . . . . . . . . . . . . . .52

Fig 12. SPI slave timing . . . . . . . . . . . . . . . . . . . . . . . . .53

Fig 13. USART timing . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Fig 14. SPI flash interface timing (mode 0) . . . . . . . . . . .55

Fig 15. Differential data-to-EOP transition skew and EOP

width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Fig 16. QN9080 typical application schematic with

DC-to-DC converter . . . . . . . . . . . . . . . . . . . . . . .63

Fig 17. QN9080 typical application schematic without

DC-to-DC converter . . . . . . . . . . . . . . . . . . . . . . .64

Fig 18. QN9083 typical application schematic with

DC-to-DC converter . . . . . . . . . . . . . . . . . . . . . . .65

Fig 19. QN9083 typical application schematic without

DC-to-DC converter . . . . . . . . . . . . . . . . . . . . . . .66

Fig 20. HVQFN48 package outline . . . . . . . . . . . . . . . . .68

Fig 21. WLCSP Package outline . . . . . . . . . . . . . . . . . .69

Fig 22. HVQFN48 Soldering footprint . . . . . . . . . . . . . . .70

Fig 23. WLCSP Soldering footprint . . . . . . . . . . . . . . . . .71

Product data sheet Rev. 1.1 — 19 April 2018 78 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

24. Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 General description . . . . . . . . . . . . . . . . . . . . . . 1

3 Features and benefits . . . . . . . . . . . . . . . . . . . . 2

4 Ordering information. . . . . . . . . . . . . . . . . . . . . 5

4.1 Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 5

5 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 Pinning information. . . . . . . . . . . . . . . . . . . . . . 8

7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . 10

7.2.1 Termination of unused pins. . . . . . . . . . . . . . . 18

7.2.2 Pin states in different power modes . . . . . . . . 18

8 Functional description . . . . . . . . . . . . . . . . . . 19

8.1 Architectural overview . . . . . . . . . . . . . . . . . . 19

8.2 ARM Cortex-M4 processor . . . . . . . . . . . . . . . 19

8.3 ARM Cortex-M4 integrated Floating Point Unit

(FPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

8.4 Memory Protection Unit (MPU). . . . . . . . . . . . 19

8.5 Nested Vectored Interrupt Controller (NVIC) for

Cortex-M4. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.5.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.5.2 Interrupt sources. . . . . . . . . . . . . . . . . . . . . . . 20

8.6 System Tick timer (SysTick) . . . . . . . . . . . . . . 20

8.7 On-chip static RAM. . . . . . . . . . . . . . . . . . . . . 20

8.8 On-chip flash . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.9 On-chip ROM . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.10 Memory mapping . . . . . . . . . . . . . . . . . . . . . . 21

8.11 Power management . . . . . . . . . . . . . . . . . . . . 24

8.11.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . 24

8.11.2 Power modes . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.11.2.1 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.11.2.2 Power-down 0 mode. . . . . . . . . . . . . . . . . . . . 25

8.11.2.3 Power-down 1 mode. . . . . . . . . . . . . . . . . . . . 26

8.11.3 Brown-Out Detection (BOD) . . . . . . . . . . . . . . 26

8.12 General-Purpose Input Output (GPIO) . . . . . . 26

8.12.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

8.13 Pin interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.13.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.14 AHB peripherals . . . . . . . . . . . . . . . . . . . . . . . 27

8.14.1 DMA controller . . . . . . . . . . . . . . . . . . . . . . . . 27

8.14.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.15 Digital serial peripherals . . . . . . . . . . . . . . . . . 27

8.15.1 USB 2.0 (full-speed) device controller . . . . . . 27

8.15.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.15.2 SPI Flash Interface (SPIFI) . . . . . . . . . . . . . . 28

8.15.2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.15.3 Flexcomm serial communication (0,1,2,3) . . . 28

8.15.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.15.4 I2C-bus interface . . . . . . . . . . . . . . . . . . . . . . 28

8.15.4.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.15.5 USART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.15.5.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.15.6 SPI serial I/O controller. . . . . . . . . . . . . . . . . . 30

8.15.6.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.16 Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.16.1 Standard timer/counter (CTIMER0 to 3) . . . . 30

8.16.1.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.16.2 SCTimer/PWM . . . . . . . . . . . . . . . . . . . . . . . . 31

8.16.2.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.17 Analog peripherals . . . . . . . . . . . . . . . . . . . . . 33

8.17.1 16-bit Analog-to-Digital Converter (ADC). . . . 33

8.17.1.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.17.2 Temperature sensor . . . . . . . . . . . . . . . . . . . . 34

8.17.3 Battery monitor. . . . . . . . . . . . . . . . . . . . . . . . 34

8.17.4 Analog comparators (ACMP0, ACMP1). . . . . 34

8.17.4.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.17.5 Digital-to-Analog Converter (DAC). . . . . . . . . 34

8.17.5.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.17.6 Capacitive sense . . . . . . . . . . . . . . . . . . . . . . 35

8.17.6.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.18 CRC engine . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.19 Random Number Generator (RNG) . . . . . . . . 35

8.20 Advanced Encryption Standard (AES)

coprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.21 Quadrature DECoder (QDEC) . . . . . . . . . . . . 35

8.22 Fusion Signal Processor (FSP) . . . . . . . . . . . 36

8.22.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.23 Clock management . . . . . . . . . . . . . . . . . . . . 36

8.23.1 Clock sources . . . . . . . . . . . . . . . . . . . . . . . . 36

8.23.1.1 Internal 32 MHz oscillator . . . . . . . . . . . . . . . 36

8.23.1.2 Internal 32 kHz oscillator . . . . . . . . . . . . . . . . 37

8.23.1.3 External high frequency crystal oscillator. . . . 37

8.23.1.4 External 32.768 kHz crystal oscillator . . . . . . 37

8.23.2 Clock generation . . . . . . . . . . . . . . . . . . . . . . 37

8.24 Code security . . . . . . . . . . . . . . . . . . . . . . . . 37

8.25 Emulation and debugging . . . . . . . . . . . . . . . 38

9 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 39

10 Thermal characteristics . . . . . . . . . . . . . . . . . 40

11 Static characteristics . . . . . . . . . . . . . . . . . . . 41

11.1 General operating conditions . . . . . . . . . . . . . 41

11.2 CoreMark data . . . . . . . . . . . . . . . . . . . . . . . . 41

11.3 Power consumption . . . . . . . . . . . . . . . . . . . . 41

11.4 Pin characteristics . . . . . . . . . . . . . . . . . . . . . 46

12 Dynamic characteristics. . . . . . . . . . . . . . . . . 47

12.1 Start-up behavior . . . . . . . . . . . . . . . . . . . . . . 47

12.2 Flash memory . . . . . . . . . . . . . . . . . . . . . . . . 48

12.3 I/O pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

12.4 Wake-up process . . . . . . . . . . . . . . . . . . . . . . 49

12.5 Internal 32MHz oscillator . . . . . . . . . . . . . . . . 49

12.6 External high frequency crystal oscillator. . . . 50

12.7 External 32.768 kHz crystal oscillator . . . . . . 50

12.8 Internal 32 kHz oscillator . . . . . . . . . . . . . . . . 51

12.9 SPI interfaces. . . . . . . . . . . . . . . . . . . . . . . . . 51

12.10 USART interface . . . . . . . . . . . . . . . . . . . . . . 54

12.11 SPIFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

12.12 SCTimer output timing . . . . . . . . . . . . . . . . . . 55

12.13 USB interface characteristics. . . . . . . . . . . . . 55

13 RF characteristics . . . . . . . . . . . . . . . . . . . . . . 57

13.1 Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 19 April 2018

Document identifier: QN908x

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

13.2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

14 Analog characteristics . . . . . . . . . . . . . . . . . . 59

14.1 BOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

14.2 ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

14.3 Temperature sensor . . . . . . . . . . . . . . . . . . . . 61

14.4 DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

14.5 Analog comparator . . . . . . . . . . . . . . . . . . . . . 61

14.5.1 Capacitive sense . . . . . . . . . . . . . . . . . . . . . . 62

15 Application information. . . . . . . . . . . . . . . . . . 63

15.1 Schematic for QN9080 with DC-to-DC converter .

15.2 Schematic for QN9080 without DC-to-DC

converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

15.3 Schematic for QN9083 with DC-to-DC converter .

15.4 Schematic for QN9083 without DC-to-DC

converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

15.5 QN908x external component list . . . . . . . . . . 67

16 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 68

17 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

18 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 72

19 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 73

20 Legal information. . . . . . . . . . . . . . . . . . . . . . . 74

20.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 74

20.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

20.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

20.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 75

21 Contact information. . . . . . . . . . . . . . . . . . . . . 75

22 Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

23 Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

24 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Product data sheet Rev. 1.2 — 19 April 2018 80 of 80

NXP Semiconductors QN908x

Bluetooth Low Energy microcontroller with 32-bit ARM Cortex-M4