SP1ML-915 - STMICROELECTRONICS

This is information on a product in full production.

October 2017 DocID026906 Rev 8 1/31

SP1ML

SPIRIT1 868 and 915 MHz low power RF modules with integrated

microcontroller

Datasheet - production data

Features

Complete RF-ready SPIRIT1 module based

on:

– SPIRIT1 low data rate, low power sub-GHz

transceiver

– STM32L1 Ultra low power microcontroller

at 32 MHz (16 kB RAM and 128 kB Flash)

– BALF-SPI-01D3 868/915 MHz balun with

integrated harmonic filter

– Integrated antenna and crystal

Compact size: 14 mm x 13.4 mm x 2.5 mm

863 to 870 MHz operation (SP1ML-868)

902 to 928 MHz operation (SP1ML-915)

Operates from a single 1.8 V to 3.6 V supply

Output power up to +11.6 dBm

Data rates up to 500 kbps

Modulation schemes: 2-FSK, GFSK, GMSK,

OOK, and ASK

Operating temperature: -40 °C to 85 °C

UART interface with AT comman d set

FCC and CE regulator y ap pr ovals

Applications

Home & building automation

Wireless sensor network

Data acquisition equipment

Security systems

Mobile health and medical

Industrial monitor and control

Wireless metering, WMBUS

Internet of things (IoT)

Description

The SP1ML-868 and SP1ML-915 are ultra-low

power & fully integrated RF modules operating

respectively in the 868 MHz SRD and 915 MHz

ISM bands.

The SP1ML module is a compact-size module,

integrating an o n-boa rd ante nna with easy- to-use

interface, allowing users to easily add wireless

connectivity in designs without requiring in-depth

RF experience, and has all necessary FCC

modular approvals and CE compliance, reducing

time-to-market.

These modules are based on the SPIRIT1 RF

sub-GHz transceiver (with integrated SMPS),

STM32L1 microcontroller, integrated filter/balun

and chip antenna. The UART host interface

allows simple connection to an external

microcontrolle r with a standard firmware, allo wing

AT commands to facilitate RF configuration, data

transmission and reception, using simple poin t-to-

point communication. Selected STM32L1 GPIO

and peripherals are available for interfacing to

external devices in the user application.

Advanced features of the SPIRIT1 radio are also

accessible. The serial wire debug interface

(SWD) is also available. T he SP1ML ca n be used

as an open platform, replacing the default

firmware with its own application firmware.

The modules are CE compliant and FCC certified

(FCC ID S9NSP1ML).

www.st.com

Contents SP1ML
2/31 DocID026906 Rev 8
Contents
Hardware specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1 Recommended operating conditions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
3 I/O operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
4 Current consumption  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
5 RF compliance limits  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
6 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
7 Pin placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
8 Internal hardware connection for open platform . . . . . . . . . . . . . . . . . . . . .  9
9 Hardware block diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
Hardware design  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1 Pin usage  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2 Typical application circuit  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
Optional functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Layout guidelines  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
4 Recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
5 Module reflow installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
Module operation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1 Operating mode  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
2 Command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
3 Command reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
4 Configuration registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
5 Information registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
6 Example command sequence  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
ECOPACK®   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

DocID026906 Rev 8 3/31

SP1ML Contents

6.1 CE Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2 FCC certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.3 Labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.4 Product manual instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 Module traceability and marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

List of tables SP1ML
4/31 DocID026906 Rev 8
List of tables
Table 1. Recommended operating conditions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. I/O operating characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Current consumption  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. RF compliance limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 6. Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 7. Module pin usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 8. Soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 9. Command reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 10. Configuration registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 11. Information registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 12. Example configuration AT sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 13. Module Product ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 14. Ordering information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 15. Document revision history  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

DocID026906 Rev 8 5/31
SP1ML List of figures
31
List of figures
Figure 1. Pin placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2. Internal hardware connection for open platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3. Hardware block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. Layout guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6. Recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 7. Soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8. Package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 9. CE marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 10. SP1ML top side  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 11. SP1ML bottom side  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 12. SP1ML QR-code laser marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

Hardware specification SP1ML

6/31 DocID026906 Rev 8

1 Hardware specification

General conditions (VIN = 3 V and TA = 25 °C ).

1.1 Recommended operating conditions

1.2 Absolute maximum ratings

1.3 I/O operating characteristics

Table 1. Recommended operat ing conditions

Symbol Parameter Min. Typ. Max. Unit

TAOperating ambient temperature range -40 - 85 ˚C

VDD Operating supply voltage 1.8 3 3.6 V

FREQ RF frequency (SP1ML-868) 863 - 870 MHz

FREQ RF frequency (SP1ML-915) 902 - 928 MHz

Table 2. Absolute maximum ratings

Symbol Parameter Min. Typ. Max. Unit

TSTG Storage temperature range -40 - 85 ˚C

VDD Operating supply voltage -0.3 - 3.9 V

VIO I/O pin voltage -0.3 - 5.5 V

Table 3. I/O operating characteristics

Symbol Parameter Min.Typ.Max.Unit

VIL(1) I/O input low level voltage -0.3 - 0.3 VDD V

VIH(1) I/O input high level voltage 0.7 VIN -V

DD+0.3 V

1. For more details see the STM32L151RB datasheet, I/O port characteristics.

DocID026906 Rev 8 7/31

SP1ML Hardware specification

1.4 Current consumption

1.5 RF compliance limits

The RF compliance limits are those tested for FCC and CE certification. These limits are

enforced by the factory loaded firmware. Care must be taken with custom firmware to

ensure these limits are not exceeded, voiding the FCC and CE certification.

Table 4. Current consumption

Symbol Parameter Test conditions Typ. Unit

IDD Supply current

Operating mode

Tx, +11 dBm, 2-FSK, 915 MHz 20 mA

Operating mode

Tx, -7 dBm, 2-FSK, 915 MHz 8mA

Operating mode

Rx, 915 MHz 13.5 mA

Command mode 2.2 mA

Standby 1.4 µA

Table 5. RF compliance limits

Modulation Standards Parameter Max. Unit

2-FSK

GFSK

MSK

FCC Part 15.207 (1)

FCC Part 15.247 (1)

EN 300 220-2 V2.4.1 (2)

EN 301 489-01 V1.9.2 (2)

EN 301 489-03 V1.4.1 (2)

Data rate 500 kbps

Output power +11.6 dBm

OOK

ASK

FCC Part 15.207 (1)

FCC Part 15.249 (1)

EN 300 220-2 V2.4.1 (2)

EN 301 489-01 V1.9.2 (2)

EN 301 489-03 V1.4.1 (2)

Data rate 250 kbps

Output power +8.5 dBm

1. FCC standards are only applicable to the SP1ML-915 module.

2. EN standards are only applicable to the SP1ML-868 module.

Hardware specification SP1ML

8/31 DocID026906 Rev 8

1.6 Pin assignment

Table 6. Pin assignment

Pin Name Type Description STM32L pin(1)

1 TXRXLED O Active low Tx/Rx LED drive(2) PA2

2 SHDN I Shutdown PA0

3 GPIO0 I/O General purpose input/output 0(3) PB15

4 GPIO1 I/O General purpose input/output 1 (3) PB14

5 MODE0 I Protocol mode selection 0(2) PB13

6 MODE1 I Protocol mode selection 1(2) PB12

7 VDD Power Supply input voltage -

8 GND Power Ground -

9 SW D IO I/O Serial wire I/O PA13

10 SWCLK I Serial wire clock PA14

11 BOOTMODE I Boot mode selection BOOT0

12 RESET I Reset input, active low NRST

13 TXD O UART transmit data PA9

14 RXD I UART receive data PA10

15 GPIO2 I/O General input/output 2 (3) PB6

16 GPIO3 I/O General purpose input/output 3 (3) PB7

1. For further details, see the STM32L151RB datasheet, Pin descriptions section. Alternate functions of any given pin are

dependent on the user application firmware that is loaded into the module and is beyond the scope of this document.

2. Refer to Hardware design section for details regarding TXRXLED and protocol mode selection.

3. The GPIO signals are not used by the default firmware integrated in the module. They are accessible with user application

firmware. See note 1.

DocID026906 Rev 8 9/31

SP1ML Hardware specification

1.7 Pin placement

Figure 1. Pin placement

1.8 Internal hardware connection for open platform

Figure 2. Internal hardwar e connection for open platform

































*63*6*

670/

63,5,7

3$

3$

3%

3%

3%

3%

3$ 3$ 3$ 3$ 3$ 3& 3&

6'1

6&/.

0,62

026, *3,2

*3,2

*3,2

3%

7;5;/('

6+'1

*3,2

*3,2

02'(

02'(

9''

*1'

*3,2

*3,2

5;'

7;'

5(6(7

%22702'(

6:&/.

6:',2

3%

3%

3$

3$

Q567

%227

3$

3$

*63*6*

Hardware specification SP1ML

10/31 DocID026906 Rev 8

1.9 Hardware block diagram

Figure 3. Hardware block diagram

Spirit1 Filter/Balun

STM32L

Microcontroller

SPI

GPIO

UART

XTAL

1.8V to 3.6V Supply

GPIO TX

RXp

RXn

SMPS

GSPG1409141831SMD

DocID026906 Rev 8 11/31

SP1ML Hardware design

2 Hardware design

2.1 Pin usage

If used with the default firmware and interfaced to a host MCU, at a minimum the SP1ML

module requires power, ground and UART transmit and receive signals to be connected.

Other signals are optional and p rovid e additiona l functionality. These signals are outlined in

Table 7 below. Unused signals must not be connected.

Table 7. Module pin usage

Pin Name Description Optional

1 TXRXLED An active-low open drain output that can drive an external LED for

TX/RX activity status indication. TXRXLED must be enabled by setting

the value to 1 in register S24. Yes

2 SHDN Drive this signal low to put the module into a low powe r shutdown

mode. Drive the signal high to wake the module. Yes

3 GPIO0 Reserved for future use, do not connect. Yes

4 GPIO1 Reserved for future use, do not connect. Yes

5MODE0

Drive this signal high to force the module into opera ting mode. Drive

this signal low to force the module into command mode. This enables

faster switching between modes and obviates the nee d for escape

sequences. After setting the MODE0 value, do a RESET to make the

new setting effective.

Yes

6 MODE1 Reserved for future use, do not connect. Yes

7 VDD Connect to power supply, 1.8V to 3.6V. No

8 GND Connect to system ground. No

9SWDIO

These signals are the serial wire debug (SWD) interfa c e to the

STM32L microcontroller, supporting the development and loading of

custom firmware.

Yes

10 SWCLK Yes

11 BOOTMODE Drive this signal hig h at power up or reset to start the boot loader and

allow device firmware update over the UART interface. Yes

12 RESET Drive this signal low to hold the module in reset. Drive this signal high

to release the module from reset. Yes

13 TXD Connect to the host system UART RXD input. No

14 RXD Connect to the host system UART TXD output. No

15 GPIO2 Reserved for future use. Yes

16 GPIO3 Reserved for future use. Yes

Hardware design SP1ML

12/31 DocID026906 Rev 8

2.2 Typical application circuit

In a typical application the SP1ML module is connected to a host MCU using a standard

UART, with transmit and receive signals. This is illustrated in Figure 4.

Figure 4. Typical application circuit

Optional functionality

1. When the TXRX_LED (S24) configuration register (see Table 10) is set to 1, the

TXRXLED signal is an active-low open drain output tha t can be used to drive an

external LED for status indication when data is sent or received.

2. The MODE0 signal provides a hardwar e method for switching betwe en command and

operating modes. The SHDN signal allows the mod ule to be placed into a low power

shutdown mo de and woken up again.

3. The BOOTMODE AND RESET signals should be connected if module firmware will

need to be updated over the UART interface.

4. To support custom module firmware, the serial wire d ebug signals need to be

accessible for programming and debugging.

2.3 Layout guidelines

The application PCB requires a flooded ground plane. Care must be t aken to ensure there

are no trace s or gr ou n d pla ne s un der the area surrounding the antenna, with the exception

SP1ML

MODULE

HOST

MCU

TXD TXD

RXD RXD

RTS

CTS

GPIO

BOOTMODE

RESET

GPIO

MODE0

SHDN

TXRXLED

VDD

RESET

SWCLK

SWDIO

SWD

HEADER

VDD

GND

10uF

DocID026906 Rev 8 13/31

SP1ML Hardware design

of minimal width traces from pins 1, 2, 3, 4, 13 and 14 of the module if these are used. It is

appropriate to place the module toward the edge of the PCB with no traces or ground planes

from the antenna to the board edge.

Figure 5. Layout guidelines

App lica ti on PCB

No copper on any layer surr ounding antenna , ex c ept

minimal traces from pins 1,2,3,4,13 and14

Flooded ground plane required

(signal traces allowed)

min .

6 mm min .

6 mm

Hardware design SP1ML

14/31 DocID026906 Rev 8

2.4 Recommended footprint

Figure 6. Recommended footprint

2.5 Module reflow installation

The SP1ML is a surface mount module supplied on a 16-pin, 4-layer PCB. The final

assembly recommended reflow profile is indicated below, based on IPC/JEDEC JSTD-

020C, July 2004 recommendations.

Table 8. Soldering profile

Profile feature Lead-free assembly

Average ramp-up rate (TSMAX to TP) 3 °C/sec max

Preheat:

– Temperature min. (TS min.)

– Temperature max. (TS max.)

– Time (ts min. to ts max.)(ts)

150 °C

200 °C

60-100 sec

DocID026906 Rev 8 15/31

SP1ML Hardware design

Figure 7. Soldering profile

Time maintained above:

– Temperature TL

217 °C

60-70 sec

Peak temperature (TP) 240 °C

Time within 5 °C of actual peak temperature (TP) 10-20 sec

Ramp-down rate 6 °C/sec

Time from 25 °C to peak temperature 8 minutes max.

Table 8. Soldering profile (continued)

Profile feature Lead-free assembly

GSPG1409141835SMD

Module operation SP1ML

16/31 DocID026906 Rev 8

3 Module operation

The SP1ML module is provided with firmware that supports wireless serial cable

replacement. There are two operational modes, command mod e and operating mode. The

command mode allows module configuration and status interrogation using an extended

‘AT’ style command set. In operating mode the module serves its primary purpo se as a

wireless transceiver. Following power-up or reset, the module starts in operating mode with

the current configuration load ed from EEPROM.

3.1 Operating mode

In operating mode, data received from the host on the UART interface will be wirelessly

transmitted by the SPIRIT1 r adio using the curr ent configur ation settings for fr equency, data

rate, modulation and output power. Conversely, any data received by the SPIRIT1 that

meets the configured filtering criteria will be output to the UART interface.

Care must be taken to ensure that the escape sequence to enter command mode does not

occur in the data stream sent by the host to the UART interface.

3.2 Command mode

In command mode, the module will accept commands to configure module settings and

interrogate modu le status. To enter command mode, the ‘+++’ escape sequence is issued to

the module from operating mode. The escape sequence should be preceded by minimum

delay of 500 milliseconds where no other data is transmitted. The three ‘+’ characters of the

sequence must be sent within 500 milliseconds of each other. The module issues the

response ‘OK’ if command mode is entered successfully.

Commands issued to th e module are in ‘AT’ style format, and use ASCII characters, st arting

with ‘A’ and ‘T’, then one or more characters for the specific command, followed by any

additional command specific data and terminated with a carriage return <CR>.

The delay between each consecutive character of a command must be less than 8 seconds,

else the module will time out and discard any characters already received.

If the module receives an invalid command, it will send the ‘ERROR’ response. All

responses issued by the module are terminated with a line feed and carriage return,

<LF><CR>.

3.3 Command reference

Table 9: Command reference provides a summary of the AT commands available for

module configuration. A detailed description of each command is pr ovided following the list.

DocID026906 Rev 8 17/31

SP1ML Module operation

Table 9. Command reference

Command Description

ATO

Enter operating mode

This command is issued to exit command mode and enter operating mode where the

module fulfills its primary purpose as a wireless transceiver usin g the current configuration.

Response: OK

AT/V

Read module version information

Reports the module hardware and firmware version information.

Response:

SP1ML-xxx HW:Vy FW:V y.zz

Where xxx is 868 or 915, y is a single digit major version number and zz is a double digit

minor version number.

ATIn

Read an information register

Reads the current value from an information register, where n is the information register

number.

See information registers table.

Response:

ERROR PARAM if an invalid register is specified.

ATSnn?

Read a configuration register

Reads the current value from a configuration register, where nn is the configuration register

number.

See configuration registers section.

Response:

ERROR PARAM if an invalid register number is specified.

ATSnn=x

Write a configuration register

Writes a new value to a configuration register, where nn is the configuration register number

and x is the value. The new configuration will be in effect until the next module reset.

See configuration registers section.

Response: OK if the value is written successfully.

ERROR PARAM if an invalid register number is specified.

ERROR VALUE if an invalid value is specified.

AT/S

Read all configuration registers

Reads the current values of all configuration registers.

See the configuration registers section.

Response: (one line for each register)

AT/C

Store the current configuration

Stores the current module configuration registers. The stored configuration will be reloaded

anytime the mo du l e is rese t.

Response: OK if the configuration is stored successfully.

ERROR if storing the configuration failed.

Module operation SP1ML

18/31 DocID026906 Rev 8

3.4 Configuration registers

The configuration registers contain the radio, packet and general configuration settings for

the module. They are read and written in command mode. Table 10 details each

configuratio n re gis te r.

ATR

Reset configuration to the de fault values

This command resets all module configuration registers to their factory default values.

Response: OK

ERROR if resetting the configuration failed.

ATZ

Restart the module

Restarts the module and reloads the current configuration. This generates a soft reset of the

microcontroller and start execution of the firmware from the reset vector.

Response: OK

AT/SRnn?

Read a SPIRIT1 radio register

Reads the current value from a SPIRIT1 radio register, where nn is the two digit

hexadecimal register address.

Response:

ERROR PARAM if an invalid register number is specified.

ERROR if reading the register failed.

AT/SRnn=xx

Write a SPIRIT1 radio register

Writes a new value to a SPIRIT1 radio register, where nn is the two digit hexadecimal

Response: OK

ERROR PARAM if an invalid register number is specified.

ERROR if writing the register failed.

AT/Tn

Set RF test mode

Set the RF test mode, where n is the test mode number from one of the following options:

0 = Disable RF test mode.

1 = Pseudorandom binary sequence RF test mode (PN9).

2 = Continuous wave RF test mode (CW).

Response: OK if the test mode is set successfully

ERROR PARAM if an invalid test mode number is specified.

Table 9. Command reference (continued)

Command Description

DocID026906 Rev 8 19/31

SP1ML Module operation

Table 10. Configuration registers

# Name Description

S00 BAUD_RATE

General: Baud rate of the UART interface in bps. The baud rate is

stored when the configuration is stored.

Values:

Most standard baud rates from 9600 to 921600.

Default: 115200

S01 FREQUENCY

Radio: Frequency in Hz.

Values:

Must be within the operating frequency range of the modu le.

Default:

868000000 (for SP1ML-868)

915000000 (for SP1ML-915)

S02 DATA_RATE

Radio: Data rate in bps. The data rate for OOK and ASK modulation

schemes is limited to 250000bps.

Values:

From 1000 to 500000

Default: 38400

S03 MODULATION

Radio: Mo du l a ti on sche m e .

Values:

0 = 2-FSK

1 = GFSK05

2 = GFSK1

3 = GMSK

4 = OOK

5 = ASK

Default: 0

S04 OUTPUT_POWER Radio: Output power in dBm.

Values: -34 to +11.6

Default: +11.6

S05 FREQ_DEVIATION Radio: Frequency deviation in kHz.

Values: Up to 732

Default: 20

S06 RX_FILTER Radio: RX digital filter cutoff frequency in kHz.

Values: Up to 769

Default: 100

S07 CS_MODE

Radio: Carrier sense mode.

Values:

0 = Static sensing

1 = Dynamic sensing with 6 dB dynamic threshold

2 = Dynamic sensing with 12 dB dynamic threshold

3 = Dynamic sensing with 18 dB dynamic threshold

Default: 0

Module operation SP1ML

20/31 DocID026906 Rev 8

S08 RSSI_THRESHOLD Radio: Carrier sense RSSI threshold in dBm.

Values: -130 to -3

Default: -130

S09 PREAMBLE_LEN Packet: Preamble length in bytes.

Values: 1 to 32 bytes.

Default: 8

S10 SYNC_LENGTH Packet: Sync leng th in bytes.

Values: 1 to 4

Default: 4

S11 SYNC_VALUE Packet: 32-bit sync value.

Values: Any 32-bit hexadecimal value.

Default: 0x88888888

S12 CRC_MODE

Packet: CRC mode.

Values:

1 = POLY_0x07

2 = POLY_0x8005

3 = POLY_0x1021

4 = POLY_0x864CFB

Default: 2

S13 WHITENING

Packet: Data whitening mode.

Values:

0 = Disabled

1 = Enabled

Default: 1

S14 FEC

Packet: Forward error correction.

Values:

0 = Disabled

1 = Enabled

Default: 0

S15 SOURCE_ADDR

Address: The 8-bit address for the module, used to indicate the

source of transmitted packets and for destination filtering of received

packets.

Values: Any 8-bit hexadecimal value.

Default: 0x00

S16 DESTINATION_ADDR

Address: The 8-bit destination address, used to indicate the

destination for transmitted packets and for source filtering of received

packets.

Values: Any 8-bit hexadecimal value.

Default: 0xff

S17 MULTICAST_ADDR

Address: The 8-bit multicast addre ss, used for multicast filtering on

received packets.

Values: Any 8-bit hexadecimal value.

Default: 0xee

Table 10. Configuration registers (continued)

# Name Description

DocID026906 Rev 8 21/31

SP1ML Module operation

S18 BROADCAST_ADDR

Address: The 8-bit broadcast address, used for broadca st filtering on

received packets.

Values: Any 8-bit hexadecimal value.

Default: 0xff

S19 FILTER_CRC

Address: Filter packets that have an invalid CRC.

Values:

0 = Disabled, 1 = Enabled

Default: 0

S20 FILTER_SOURCE

Address: Filter packets that do not have a source address that

matches the address specified in register S16.

Values:

0 = Disabled, 1 = Enabled

Default: 0

S21 FILTER_DESTINATION

Address: Filter packets that do not have a destination address that

matches the modules source address specified in register S15.

Values:

0 = Disabled, 1 = Enabled

Default: 0

S22 FILTER_MULTICAST

Address: Filter packets that do not have a destination address that

matches the multicast address in specified in registe r S17.

Values:

0 = Disabled, 1 = Enabled

Default: 0

S23 FILTER_BROADCAST

Address: Filter packets that do not have a destination address that

matches the broadcast address in specified in register S18.

Values:

0 = Disabled, 1 = Enabled

Default: 0

S24 TXRX_LED

General: Enable or disable the TX/RX LED output on module pin 1.

When enabled, the LED output will be flashed when data is sent or

received by the radio.

Values:

0 = Disabled, 1 = Active-Low Open Drain Output, 2 = Push Pull Output

Default: 0

S26 ESCAPE_SEQ

General: Enable or disable the ‘+++’ escape sequence used to enter

command mode. This configuration is never stored and will be enabled

at module reset.

Values:

0 = Disabled, 1 = Enabled

Default: 1

Table 10. Configuration registers (continued)

# Name Description

Module operation SP1ML

22/31 DocID026906 Rev 8

3.5 Information registers

3.6 Example command sequence

Table 12 shows a typical command sequence to enter command mode, issue AT

commands to configure settings of the SPIRIT1 radio and then exit back to operating mode.

S27 Source_FILT_MASK

Address: An 8-bit source filter mask, used when source filtering is

enabled.

Values: Any 8-bit hexadecimal value.

Default: 0x00

S28 PAYLOAD_SIZE Packet: Packet payload size in bytes.

Values: 1 to 96

Default: 32

Table 10. Configuration registers (continued)

# Name Description

Table 11. Information registers

# Name Description

I0 PER Packet error rate (%).

I1 RSSI Received signal strength indicator.

I2 LQI Link quality indicator.

I3 PQI Preamble quality indicator.

I4 SQI Synchronizati on quality indicator.

I5 PACKET_COUNT Count of packets received.

I6 PACKETS_LOST Count of packets lost.

Table 12. Example configuration AT sequence

Host comm an d Mo du le response Descript io n

+++ OK<LF><CR> Escape sequence to put module into command mode

from operating mode.

ATS02=38400 OK<LF> <CR> Set the radio data rate to 38400 bps.

ATS03=2 OK<LF><CR> Set the modulation scheme to GFSK1.

ATS04=+8 OK<LF><CR> Set the output power to +8 dBm.

AT/C OK<LF><CR> Write configuration to EEPROM.

ATO OK<LF><CR> Return to operating mode.

DocID026906 Rev 8 23/31

SP1ML ECOPACK®

4 ECOPACK®

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®

specifications, grade definitions and product status are available at: www.st.com.

ECOPACK® is an ST trademark.

5 Package mechanical data

Figure 8. Package mechanical data

 PP

PP

PP

 PP

PP

 PP

5PP

PP

PD[

*63*60'

Regulatory compliance SP1ML

24/31 DocID026906 Rev 8

6 Regulatory compliance

6.1 CE Certification

The SP1ML-868 module has been certified according to the following certification rules:

EN 300 328 V 2.1.1 (2016-11) (a)

ETSI EN 301 489-17 V3.1.1 (2017-02) (b)

ETSI EN 301 489-1 V2.1.1 (2017-02) (c)

EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013 (d)

EN 62479:2010

a) EN 300 328 V 2.1.1 (2016 11): "electromagnetic compatibility and radio spectrum

Matters (ERM); Wideband transmission systems; data tra nsmission equipment

operating in the 2.4 GHZ ISM band and using wideband modulation techniques;

harmonized EN covering essential requirements under article 3.2 of the R&TTE

directive".

b) EN 301 489-17 V 3.1.1 (2017 02): "electromagnetic compatibility and radio

spectrum Matters (ERM); electromagnetic compatibility (EMC) standard for radio

equipment and services; part 17: specific condition for 2.4 GHz wideband

transmission systems and 5 GHz high performance RLAN equipment".

c) ETSI EN 301 489-1 V2.1.1 (2017 02): "electromagnetic compatibility and radio

spectrum Matters (ERM); electromagnetic compatibility (EMC) standard for radio

equipment and services; part 1: Common technical requirements".

d) EN60950-1:2006 +A11:2009+A1:2010+A12:2011+A2:2013: "Information

technology equipme nt - safety"

The module is provided by CE marking:

Figure 9. CE marking

The SP1ML-868 module has obtained the RED certificate: No. 0051-RED-0036 REV. 0"

The certified module prod uction firmware release is:

1.X

For additional information please refer to:

STMicroelectronics Via C. Olivetti 2, Agrate Brianza 20864 (ITALY)

DocID026906 Rev 8 25/31

SP1ML Regu lato ry co mp li an c e

6.2 FCC certification

This module has been tested and found to comply with the FCC part 15 rules. These limits

are designed to provide reasonab le protection against harmful interference in approved

installations. This equipment generates, uses, and can radiate radio fre quency energy and,

if not installed and used in accordance with the instructions, may cause harmful interference

to radio communications.

However, there is no guarantee that interference may not occur in a particular installation.

This device complies with part 15 of the FCC rules. Operation is subject to the following two

conditions: (1) This device may not cause harmful interference, and (2) this device must

accept any interference received, including interference that may cause undesired

operation.

Modifications or changes to this equipment not expressly approved by STMicroelectronics

may render void the user's authority to operate this equipment.

Modular approval

FCC ID: S9NSP1ML

In accordance with FCC part 15, the SP1ML-915 is listed as a modular transmitter device.

This module is evaluated for stand-alone use only. Finished products incorporating multiple

transmitters must comply with collocation and RF exposure requirements in accordance

with FCC multi-transmitter pro duct procedures. Collocated transmitters operating in portable

RF exposure conditions (e.g. <20 cm from persons including but not limited to body-worn

and hand-held devices) may require separate approval.

6.3 Labeling instructions

When integrating the SP1M L-915 into the final pr od uct, th e OEM must en su re that th e FCC

labeling requirement s are satisfied . A statement mu st be included on the exterio r of the final

product which indicates the product includes a certified module. The label should state the

following (or similar wording that conveys the same meaning):

Contains FCC ID: S9NSP1ML

This product contains FCC ID: S9NSP1ML

The OEM must include the followin g statemen ts on th e exterior of the final product unless

the product is too small (e.g. less than 4 x 4 inches):

This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) this device may not cause harmful interference, and (2)

this device must accept any interference received, including any interference that may

cause undesired operation.

Regulatory compliance SP1ML

26/31 DocID026906 Rev 8

6.4 Product manual instructions

This section applies to OEM final products containing the SP1ML-915 module, subject to

FCC compliance. The final product manual must contain the following statement (or a

similar statement that conveys the same meaning):

WARNING: Chang es or modifications not expressly approve d by the p arty resp onsible

for compliance could void the user ’s authority to operate the equipment

In cases where an OEM se eks Cla ss B ( re siden tia l) l i mits for the final pr odu ct, the fo llowing

statement must be included in the final product manual:

NOTE: This equipment has b een tested and found to comply with the limits for a Class

B digital device, pursuant to part 15 of the FCC Rules. Th ese limits are designed to

provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses and can radiate radio frequency energy and, if not

installed and use d in accordance with the instructions, may cause ha rmful interfer ence

to radio communications. However, there is no guarantee that interference will not

occur in a particular installation. If this equipment does cause harmful interference to

radio or television reception, which ca n be determined by turning the equipment off an d

on, the user is encouraged to try to correct the interference by one or more of the

following measures:

– Reorient or reloca te the receiving antenna.

– Increase the separation between the equipment and receiver.

– Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

– Consult the dealer or an experien ced radio/TV technician for help.

In cases where an OEM seeks the lesser category of a Class A digital device for the final

product, the following statement must be included in the final product manual:

NOTE: This equipment has b een tested and found to comply with the limits for a Class

A digital device, pursuant to part 15 of the FCC Rules. Th ese limits are designed to

provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment generates, uses, and can

radiate radio frequency energy and, if not installed and used in accordance with the

instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference

in which case the user will be required to correct the interference at his expense.

DocID026906 Rev 8 27/31

SP1ML Module traceability and marking

7 Module traceability and marking

The standard top-side laser label contains the following information:

FCC ID: “S9NSP1ML”. FCC certification information, valid only for SP1ML-9 15 product

family.

Model: “MODEL: SP1ML”. Product family identification, SP1ML-868 or SP1ML-915.

Figure 10. SP1ML top side

Each module is univocally identified by serial number stored in a 2D data matri x laser

marked on the bottom side of the module itself.

Figure 11. SP1ML bottom side

Module traceability and marking SP1ML

28/31 DocID026906 Rev 8

The figure below shows the standard botto m-side QR-code laser marking.

Figure 12. SP1ML QR-code laser marking

The serial number has the following format: WW YY K PP NNN

where:

WW - Production week

YY - Production year

K - Product ID (refer to Table 13 below)

PP - internal ST use only

NNN - internal ST use on ly

Each module bulk package is identified by a bulk ID.

The Bulk ID and module 2D data matrix are linked by a reciprocal traceability link.

The module 2D data matrix traces the lot number of any raw material used .

Table 13. Module Product ID

K Product family identification

N SPSGRF-868

O SPSGRF-915

DocID026906 Rev 8 29/31

SP1ML Ordering information

8 Ordering information

Table 14. Ordering information

Order code Description

SP1ML-868 868 MHz SPIRIT1 antenna module (Region 1, Europe)

SP1ML-915 915 MHz SPIRIT1 antenna module (Region 2, The Americas)

Revision history SP1ML

30/31 DocID026906 Rev 8

9 Revision history

Table 15. Document revision history

Date Revision Changes

24-Oct-2014 1 Initial release.

17-Dec-2014 2 – Document st atus promoted from preliminary to production data.

– Updated operating temperature range in Features and Table 1.

27-Apr-2015 3 Updated: Features and Description.

26-Jun-2015 4 Updated: Features.

29-Jun-2016 5

– Updated Description.

– Added Section 1.8: Internal hard ware connection for open

platform and Section 7: Module traceability and marking.

– Updated Figure 6: Recommended footprint.

23-Sep-2016 6 – Updated Figure 1: Pin placement.

08-Nov-2016 7 – Updated: Figure 1: Pin placement and Figure 2: Internal

hardware connection for open platform.

09-Oct-2017 8 – Updated: Section 6.1: CE Certification.

DocID026906 Rev 8 31/31

SP1ML

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelec tronics NV and its subsidiaries ( “ST”) reserve the right to make changes, corrections, enhancements, modifications, and

improvement s to ST pro ducts and/o r to this document at any time withou t notice. Purcha sers should obtain the lat est relevant information on

ST products before placing or ders. ST products are sold pursuant to ST’s terms an d conditions of sale in place at the time of order

acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or

the design of Purchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein sh all void any warranty granted by ST for s uch produ ct.

ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.

Information in this document supersedes and rep laces information previously supplied in any prior versions of this document.