VCNL4035X01-GS08 - VISHAY - Datasheet.Live

VCNL4035X01

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Fully Integrated Proximity and Ambient Light Sensor With

I2C Interface and Interrupt Function for Gesture Applications

DESIGN SUPPORT TOOLS AVAILABLE

DESCRIPTION

VCNL4035X01 integrates a proximity sensor (PS),

ambient light sensor (ALS), a muxx, and a driver for up

to 3 external IREDs / LEDs into one small package. It

incorporates photodiodes, amplifiers, and analog to digital

converting circuits into a single chip by CMOS process. The

16-bit high resolution ALS offers excellent sensing

capabilities with sufficient selections to fulfill most

applications whether dark or high transparency lens design.

Both ALS and PS programmable interrupt features of

individual high and low thresholds offers the best utilization

of resource and power saving on the microcontroller.

The proximity sensor features an intelligent cancellation

scheme, so that cross talk phenomenon is eliminated

effectively. To accelerate the PS response time, smart

persistence prevents the misjudgment of proximity sensing

but also keeps a fast response time. Active force mode, one

time trigger by one instruction, is another good approach for

more design flexibility to fulfill different kinds of applications

with more power saving.

The adoption of patented FiltronTM technology achieves the

closest ambient light spectral sensitivity to real human eye

responses and offers the best background light cancellation

capability (including sunlight) without utilizing the

microcontrollers’ resources. VCNL4035X01 provides an

excellent temperature compensation capability for keeping

output stable under various temperature configurations.

ALS and PS functions are easily operated via the simple

command format of I2C (SMBus compatible) interface

protocol. Operating voltage ranges from 2.5 V to 3.6 V.

VCNL4035X01 is packaged in a lead-free 8-pin QFN

package, which offers the best market-proven reliability

quality.

FEATURES

• Package type: surface-mount

• Dimensions (L x W x H in mm): 4.0 x 2.36 x 0.75

• AEC-Q101 qualified

• Integrated modules: ambient light sensor

(ALS), proximity sensor (PS), and signal

conditioning ICL

• Operates ALS and PS in parallel structure

•Filtron

TM technology adoption for robust

background light cancellation

• Temperature compensation: -40 °C to +105 °C

• Low power consumption I2C (SMBus compatible)

interface

• Output type: I2C bus (ALS / PS)

• Operation voltage: 2.5 V to 3.6 V

• Floor life: 168 h, MSL 3, according to J-STD-020

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

PROXIMITY FUNCTION

• Immunity to red glow (≥ 890 nm IREDs)

• Programmable IRED sink current

• Intelligent cancellation to reduce cross talk phenomenon

• Smart persistence scheme to reduce PS response time

• Selectable for 12- / 16- bit PS output data

AMBIENT LIGHT FUNCTION

• High accuracy of ALS ± 10 %

• Fluorescent light flicker immunity

• Spectrum close to real human eye responses

INTERRUPT

• Programmable interrupt function for ALS and PS with

upper and lower thresholds

• Adjustable persistence to prevent false triggers for ALS

and PS

APPLICATIONS

• Handheld device

• Notebook, tablet PC

• Consumer device

• Industrial application

GESTURE APPLICATION

• 2D and 3D gesture function supported

6 IRED1

5 IRED2

8 SDA

7 INT

IRED3 4

GND 3

SCL 2

VDD 1

3D Models

Design Tools

Documents

VCNL4035X01

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Notes

(1) Depending on external IRED

(2) Adjustable through I2C interface

Note

(1) MOQ: minimum order quantity

PRODUCT SUMMARY

PART

NUMBER

OPERATING

RANGE

(mm)

OPERATING

VOLTAGE

RANGE

(V)

I2C BUS

VOLTAGE

RANGE

(V)

IRED PULSE

CURRENT (2)

(mA)

AMBIENT

LIGHT RANGE

(lx)

AMBIENT

LIGHT

RESOLUTION

(lx)

OUTPUT

CODE

ADC

RESOLUTION

PROXIMITY /

AMBIENT LIGHT

VCNL4035X01 0 to 500 (1) 2.5 to 3.6 1.8 to 5.5 200 0.004 to 16 768 0.004 16 bit, I2C 16 bit / 16 bit

ORDERING INFORMATION

ORDERING CODE PACKAGING VOLUME (1) REMARKS

VCNL4035X01-GS08 Tape and reel MOQ: 1800 pcs 4.0 mm x 2.36 mm x 0.75 mm

VCNL4035X01-GS18 MOQ: 7000 pcs

ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)

PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT

Supply voltage VDD 2.5 3.6 V

Operation temperature range Tamb -40 +105 °C

Storage temperature range Tstg -40 +110 °C

RECOMMENDED OPERATING CONDITIONS (Tamb = 25 °C, unless otherwise specified)

PARAMETER TEST CONDITION SYMBOL MIN. MAX. UNIT

Supply voltage VDD 2.5 3.6 V

Operation temperature range Tamb -40 +105 °C

I2C bus operating frequency f(I2CCLK) 10 400 kHz

PIN DESCRIPTIONS

PIN ASSIGNMENT SYMBOL TYPE FUNCTION

DD - Power supply input

2SCLII

2C digital bus clock input

3 GND - Ground

4 IRED3 I Cathode (IRED3) connection

5 IRED2 I Cathode (IRED2) connection

6 IRED1 I Cathode (IRED1) connection

7 INT O Interrupt pin

8 SDA I / O (open drain) I2C data bus data input / output

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Notes

(1) Test condition: VDD = 3.3 V, temperature: 25 °C

(2) Maximum detection range to ambient light can be determined by ALS refresh time adjustment and two sensitivity bits (ALS_HD and

ALS_NS). Refer to table “ALS Resolution and Maximum Detection Range”

(3) Depending on external IRED

(4) Based on IRED on / off duty ratio = 1/40, 1/80, 1/160, and 1/320

BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT

Supply voltage VDD 2.5 - 3.6 V

Supply current Excluded LED driving IDD - 300 - μA

Light condition = dark, VDD = 3.3 V IDD (SD) - 0.2 - μA

I2C supply voltage VPULL UP 1.8 - 5.5 V

ALS shut down ALS disable, PS enable IALSSD - 200 - μA

PS shut down ALS enable, PS disable IPSSD - 260 - μA

I2C signal input

Logic high VDD = 3.3 V VIH 1.55 - - V

Logic low VIL --0.4

Logic high VDD = 2.6 V VIH 1.4 - - V

Logic low VIL --0.4

Peak sensitivity wavelength of

ALS λp- 550 - nm

Peak sensitivity wavelength of PS λp- 850 - nm

Full ALS counts 16-bit resolution - - 65 535 steps

Full PS counts 12-bit / 16-bit resolution - - 4096 / 65 535 steps

ALS sensing tolerance White LED light source - - ± 10 %

Detectable intensity Minimum IT = 800 ms, 1 step (1)(2) - 0.004 - lx

Maximum IT = 50 ms, 65 535 step (1)(2) - 16 768 -

ALS dark offset IT = 50 ms, normal sensitivity (1) 0-3steps

PS detection range Kodak gray card (3) 0 - 500 mm

Operating temperature range Tamb -40 - +105 °C

LED_Anode voltage - - 5.5 V

IRED driving current (4) - - 200 mA

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Fig. 1 - I2C Bus Timing Diagram

I2C BUS TIMING CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

PARAMETER SYMBOL STANDARD MODE FAST MODE UNIT

MIN. MAX. MIN. MAX.

Clock frequency f(SMBCLK) 10 100 10 400 kHz

Bus free time between start and stop condition t(BUF) 4.7 - 1.3 - μs

Hold time after (repeated) start condition;

after this period, the first clock is generated t(HDSTA) 4.0 - 0.6 - μs

Repeated start condition setup time t(SUSTA) 4.7 - 0.6 - μs

Stop condition setup time t(SUSTO) 4.0 - 0.6 - μs

Data hold time t(HDDAT) - 3450 - 900 ns

Data setup time t(SUDAT) 250 - 100 - ns

I2C clock (SCK) low period t(LOW) 4.7 - 1.3 - μs

I2C clock (SCK) high period t(HIGH) 4.0 - 0.6 - μs

Clock / data fall time t(F) - 300 - 300 ns

Clock / data rise time t(R) - 1000 - 300 ns

VIH

t(LOW)

VIL

t(R)

t(HDSTA)

t(BUF)

VIL

t(HDDAT)

t(F)

t(HIGH) t(SUSTA)

t(SUDAT)

t(SUSTO)

{{

Stop condition

Star condition

{{

t(LOSEXT)

t(LOWMEXT)

SCLK

ACK

SDA

ACK

Start Stop

t(LOWMEXT)

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

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PARAMETER TIMING INFORMATION

Fig. 2 - I2C Bus Timing for Sending Word Command Format

Fig. 3 - I2C Bus Timing for Receiving Word Command Format

SA6 SA5 SA4 SA3 SA2 SA1SA7

Start by

master

ACK by

SA6 SA5 SA4 SA3 SA2 SA0

SA7

Command code

SA1

ACK by

SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0

ACK by

SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0

Stop by

master

ACK by

Data byte low Data byte high

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

VCNL4035X01

I2C bus slave address byte

SA6 SA5 SA4 SA3 SA2 SA1SA7 SA6 SA5 SA4 SA3 SA2 SA0

SA7

Command code

SA1

SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0

Data byte high

SA6 SA5 SA4 SA3 SA2 SA6 SA5 SA4 SA3 SA2 SA0

SA7

Data byte low

SA1

SA7

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

Start by

master

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

Start by

master

ACK by

VCNL4035X01

ACK by

VCNL4035X01

ACK by

VCNL4035X01

ACK by

master

I2C bus slave address byte

I2C bus

CLOCK

(SCLK)

I2C bus

DATA

(SDAT)

Stop by

master

ACK by

master

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TYPICAL PERFORMANCE CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

Fig. 4 - Normalized Spectral Response

(ALS channel)

Fig. 5 - Normalized Spectral Response

(PS channel)

Fig. 6 - Supply Current vs. Ambient Temperature

Fig. 7 - ALS View Angle

Fig. 8 - White Channel Spectral Response

100

1000

10000

400 500 600 700 800 900 1000

Axis Title

1st line

2nd line

Normalized Output (%)

λ- Wavelength (nm)

2nd line

Human eye

100

120

ALS

100

1000

10000

550 600 650 700 800 900 1000

Axis Title

1st line

2nd line

Normalized Output (%)

λ- Wavelength (nm)

2nd line

100

120

750 850 950

100

1000

10000

-40 -20 0 20 60 100

Axis Title

1st line

2nd line

IDD - Supply Current (μA)

Tamb - Ambient Temperature (°C)

2nd line

150

160

170

180

190

200

250

40 80

240

230

220

210

100

1000

10000

-60 -30 60

Axis Title

1st line

2nd line

Normalized Output (%)

100

030

-90 90

View Angle

2nd line

100

1000

10000

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

400 500 600 700 800 900 1000

Axis Title

1st line

2nd line

Normalized Output

1st line

Wavelength (nm)

2nd line

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APPLICATION INFORMATION

Pin Connection with the Host

VCNL4035X01 integrates proximity sensor, ambient light Sensor, and an IRED driver with three inputs for external LEDs / IREDs

all together with I2C interface. It is very easy for the baseband (CPU) to access PS and ALS output data via I2C interface without

extra software algorithms. The hardware schematic is shown in the following diagram.

Fig. 9 - Detailed Block Diagram

Digital Interface

VCNL4035X01 applies single slave address 0x60 (HEX) of 7-bit addressing following I2C protocol. All operations can be

controlled by the command register. The simple command structure helps users easily program the operation setting and latch

the light data from VCNL4035X01. As Fig. 10 shows, VCNL4035X01’s I2C command format is simple for read and write

operations between VCNL4035X01 and the host. The white sections indicate host activity and the gray sections indicate

VCNL4035X01’s acknowledgment of the host access activity. Write word and read word protocol is suitable for accessing

registers particularly for 16-bit data ALS and 12-bit / 16-bit PS data. Interrupt can be cleared by reading data out from register:

INT_Flag. All command codes should follow read word and write word protocols.

Fig. 10 - Write Word and Read Word Protocol

1VDD 8SDA

3GND 6 IRED1

2SCL 7 INT

4IRED3 5 IRED2

ALS-PD

Driver

ALS 16 bit

data buffer

PS-PD

DSP

Low pass

lter

data buffer

Oscillator

Output buffer

I2C interface

Temperature

sensor

VCNL4035X01

S Slave Address

A Command Code A Data Byte Low A Data Byte High A

17 811 1 818

Send Byte ɦWrite Command to VCNL4035X01

Slave Address

A Command Code A S Slave Address

A Data Byte Low A Data Byte High N P

11 8 11711818 11

Receive Byte ɦRead Data from VCNL4035X01

S = start condition

P = stop condition

A = acknowledge

Shaded area = VCNL4035X01 acknowledge

VCNL4035X01

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Function Description

VCNL4035X01 applies a 16-bit high resolution ALS that provides the best ambient light sensing capability down to

0.004 lux/step which works well under a low transmittance lens design (dark lens). A flexible interrupt function of

ALS (register: ALS_CONF) is also supported. The INT signal will not be asserted by VCNL4035X01 if the ALS value is not over

high INT threshold window level, or lower than low INT threshold window level of ALS. As long as the ALS INT is asserted, the

host can read the data from VCNL4035X01. VCNL4035X01 detects different light sources such as fluorescent light,

incandescent light, sunlight, and white LED with high accuracy ALS data output after detecting algorithm is implemented.

For proximity sensor function, VCNL4035X01 supports different kinds of mechanical designs to achieve the best proximity

detection performance for any color of object with more flexibility. The basic PS function settings, such as duty ratio, integration

time, interrupt, and PS enable / disable, and persistence, are handled by the register: PS_CONF1. Duty ratio controls the PS

response time. Integration time represents the duration of the energy being received. The interrupt is asserted when the PS

detection levels over the high threshold level setting (register: PS_THDH) or lower than low threshold (register: PS_THDL). If the

interrupt function is enabled, the host reads the PS output data from VCNL4035X01 that saves host loading from periodically

reading PS data. More than that, INT flag (register: INT_Flag) indicates the behavior of INT triggered under different conditions.

PS persistence (PS_PERS) sets up the PS INT asserted conditions as long as the PS output value continually exceeds the

threshold level. The intelligent cancellation level can be set on register: PS_CANC to reduce the cross talk phenomenon.

VCNL4035X01 also supports an easy use of proximity detection logic output mode that outputs just high / low levels saving

loading from the host. Normal operation mode or proximity detection logic output mode can be selected on the register: PS_MS.

A smart persistence is provided to get faster PS response time and prevent false trigger for PS. Descriptions of each slave

address operation are shown in table 1

Note

• All of reserved register are used for internal test. Please keep as default setting

TABLE 1 - COMMAND CODE AND REGISTER DESCRIPTION

COMMAND

CODE

DATE BYTE

LOW / HIGH

NAME R / W DEFAULT

VALUE FUNCTION DESCRIPTION

0x00 LALS_CONF1R / W0x01

ALS integration time, ALS dynamic range, persistence, interrupt, and

function enable / disable

H ALS_CONF2 R / W 0x01 ALS sensitivity, white channel enable / disable

0x01 L ALS_THDH_L R / W 0x00 ALS high interrupt threshold LSB byte

H ALS_THDH_M R / W 0x00 ALS high interrupt threshold MSB byte

0x02 L ALS_THDL_L R / W 0x00 ALS low interrupt threshold LSB byte

H ALS_THDL_M R / W 0x00 ALS low interrupt threshold MSB byte

0x03 L PS_CONF1 R / W 0x01 PS duty ratio, integration time, persistence, and PS enable / disable

H PS_CONF2 R / W 0x00 PS gain, PS output resolution, PS / gesture interrupt trigger

0x04 L PS_CONF3 R / W 0x00 PS smart persistence, active force mode, IRED select

H PS_MS R / W 0x00 LED current selection

0x05 L PS_CANC_L R / W 0x00 PS cancellation level setting

H PS_CANC_M R / W 0x00 PS cancellation level setting

0x06 L PS_THDL_L R / W 0x00 PS low interrupt threshold setting LSB byte

H PS_THDL_M R / W 0x00 PS low interrupt threshold setting MSB byte

0x07 L PS_THDH_L R / W 0x00 PS high interrupt threshold setting LSB byte

H PS_THDH_M R / W 0x00 PS high interrupt threshold setting MSB byte

0x08 L PS1_Data_L R 0x00 PS1 LSB output data

H PS1_Data_M R 0x00 PS1 MSB output data

0x09 L PS2_Data_L R 0x00 PS2 LSB output data

H PS2_Data_M R 0x00 PS2 MSB output data

0x0A L PS3_Data_L R 0x00 PS3 LSB output data

H PS3_Data_M R 0x00 PS3 MSB output data

0x0B L ALS_Data_L R 0x00 ALS LSB output data

H ALS_Data_M R 0x00 ALS MSB output data

0x0C L White_Data_L R 0x00 White LSB output data

H White_Data_M R 0x00 White MSB output data

0x0D L Reserved R 0x00 Reserved

H INT_Flag R 0x00 ALS, PS interrupt flags, PS sunlight protection mode flags

0x0E L ID_L R 0x80 Device ID LSB

H ID_M R 0x00 Device ID MSB

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Command Register Format

VCNL4035X01 provides an 8-bit command register for ALS and PS controlling independently. The description of each

command format is shown in following tables.

TABLE 2 - REGISTER: ALS_CONF1 DESCRIPTION

Command Bit76543210

COMMAND CODE: 0x00_L (0x00 DATA BYTE LOW)

Command Bit Description

ALS_IT 7 : 5 (0 : 0 : 0) = 50 ms; (0 : 0 : 1) = 100 ms; (0 : 1 : 0) = 200 ms; (0 : 1 : 1) = 400 ms; (1 : 0 : 0) to (1 : 1 : 1) = 800 ms

ALS integration time setting, longer integration time has higher sensitivity

ALS_HD 4 0 = typical dynamic range x 1, 1 = typical dynamic range x 2

ALS_PERS 3 : 2 (0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 4, (1 : 1) = 8

ALS interrupt persistence setting

ALS_INT_EN 1 0 = ALS interrupt disable, 1 = ALS interrupt enable

ALS_SD 0 0 = ALS power on, 1 = ALS shut down, default = 1

TABLE 3 - REGISTER: ALS_CONF2 DESCRIPTION

COMMAND CODE: 0x00_H (0x00 DATA BYTE HIGH)

Command Bit Description

Reserved 7 : 2 Default = (0 : 0 : 0 : 0 : 0 : 0)

ALS_NS 1 0 =typical sensitivity x 2, 1 = typical sensitivity x 1

WHITE_SD 0 0 = WHITE channel power on, 1 = WHITE channel shut down, default = 1

TABLE 4 - REGISTER ALS_THDH_L AND ALS_THDH_M DESCRIPTION

COMMAND CODE: 0x01_L (0x01 DATA BYTE LOW) OR 0x01_H (0x01 DATA BYTE HIGH)

ALS_THDH_L 7 : 0 0x00 to 0xFF, ALS high interrupt threshold LSB byte

ALS_THDH_M 7 : 0 0x00 to 0xFF, ALS high interrupt threshold MSB byte

TABLE 5 - REGISTER: ALS_THDL_L AND ALS_THDL_M DESCRIPTION

COMMAND CODE: 0x02_L (0x02 DATA BYTE LOW) AND 0x02_H (0x02 DATA BYTE HIGH)

ALS_THDL_L 7 : 0 0x00 to 0xFF, ALS low interrupt threshold LSB byte

ALS_THDL_M 7 : 0 0x00 to 0xFF, ALS low interrupt threshold MSB byte

TABLE 6 - REGISTER: PS_CONF1 DESCRIPTION

Command Bit Description

PS_Duty 7 : 6 (0 : 0) = 1/40, (0 : 1) = 1/80, (1 : 0) = 1/160, (1 : 1) = 1/320

PS IRED on / off duty ratio setting

PS_PERS 5 : 4 (0 : 0) = 1, (0 : 1) = 2, (1 : 0) = 3, (1 : 1) = 4

PS interrupt persistence setting

PS_ IT 3 : 1 (0 : 0 : 0) = 1T, (0 : 0 : 1) = 1.5T, (0 : 1 : 0) = 2T, (0 : 1 : 1) = 2.5T, (1 : 0 : 0) = 3T, (1 : 0 : 1) = 3.5T,

(1 : 1 : 0) = 4T, (1 : 1 : 1) = 8T, PS integration time setting

PS_SD 0 0 = PS power on, 1 = PS shut down, default = 1

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TABLE 7 - REGISTER: PS_CONF2 DESCRIPTION

Command Bit Description

GESTURE_INT_EN 7 0 = disabled, 1 = enabled

GESTURE_MODE 6 0 = disabled, 1 = enabled

PS_Gain 5 : 4 (0 : 0) and (0 : 1) = two step mode, (1 : 0) = single mode x 8, (1 : 1) = single mode x 1

PS_HD 3 0 = PS output is 12 bits, 1 = PS output is 16 bits

PS_NS 2 0 = typical sensitivity (two step mode x 4), 1 = typical sensitivity mode (two step mode)

PS_INT 1 : 0 (0 : 0) = interrupt disable, (0 : 1) = trigger by closing, (1 : 0)= trigger by away,

(1 : 1) = trigger by closing and away

TABLE 8 - REGISTER: PS_CONF3 DESCRIPTION

Command Bit Description

LED_I_LOW 7 0 = disabled = normal current, 1 = enabled = 1/10 of normal current,

with that the current is accordingly: 5 mA, 7.5 mA, 10 mA, 12 mA, 14 mA, 16 mA, 18 mA, 20 mA

IRED select 6 : 5 (0 : 0) = IRED1, (0 : 1) = IRED2, (1 : 0) = IRED3, (1 : 1) = IRED3

PS_SMART_PERS 4 0 = disable; 1 = enable PS smart persistence

PS_AF 3 0 = active force mode disable (normal mode), 1 = active force mode enable

PS_TRIG 2

0 = no PS active force mode trigger, 1 = trigger one time cycle

VCNL4035X01 output one cycle data every time host writes in ‘1’ to sensor.

The state returns to ‘0’ automatically.

PS_MS 1 0 = proximity normal operation with interrupt function

1 = proximity detection logic output mode enable

PS_SC_EN 0 0 = turn off sunlight cancel; 1 = turn on sunlight cancel

PS sunlight cancel function enable setting

TABLE 9 - REGISTER: PS_MS DESCRIPTION

Command Bit Description

Reserved 7 0

PS_SC_CUR 6 : 5 (0 : 0) = 1 x typical sunlight cancel current, (0 : 1) = 2 x typical sunlight cancel current,

(1 : 0) = 4 x typical sunlight cancel current, (1 : 1) = 8 x typical sunlight cancel current

PS_SP 4 0 = typical sunlight capability, 1 = 1.5 x typical sunlight capability

PS_SPO 3 0 = output is 00h in sunlight protect mode, 1 = output is FFh in sunlight protect mode,

LED_I 2 : 0

(0 : 0 : 0) = 50 mA; (0 : 0 : 1) = 75 mA; (0 : 1 : 0) = 100 mA; (0 : 1 : 1) = 120 mA

(1 : 0 : 0) = 140 mA; (1 : 0 : 1) = 160 mA; (1 : 1 : 0) = 180 mA; (1 : 1 : 1) = 200 mA

LED current selection setting

TABLE 10 - REGISTER PS_CANC_L AND PS_CANC_M DESCRIPTION

COMMAND CODE: 0x05_L (0x05 DATA BYTE LOW) AND 0x05_H (0x05 DATA BYTE HIGH)

PS_CANC_L 7 : 0 0x00 to 0xFF, PS cancellation level setting_LSB byte

PS_CANC_M 7 : 0 0x00 to 0xFF, PS cancellation level setting_MSB byte

TABLE 11 - REGISTER: PS_THDL_L AND PS_THDL_M DESCRIPTION

COMMAND CODE: 0x06_L (0x06 DATA BYTE LOW) AND 0x06_H (0x06 DATA BYTE HIGH)

PS_THDL_L 7 : 0 0x00 to 0xFF, PS interrupt low threshold setting_LSB byte

PS_THDL_M 7 : 0 0x00 to 0xFF, PS interrupt low threshold setting_MSB byte

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Adjustable Sampling Time

VCNL4035X01’s embedded LED driver drives up to 3 external IREDs by a pulsed duty cycle. The IRED on / off duty ratio is

programmable by I2C command at register: PS_Duty which is related to the current consumption and PS response time. The

higher the duty ratio adopted, the faster response time achieved with higher power consumption. For example, PS_Duty =

1/320, peak IRED current = 100 mA, averaged current consumption is 100 mA/320 = 0.3125 mA.

Initialization

VCNL4035X01 includes default values for each register. As long as power is on, it is ready to be controlled by host via I2C bus.

TABLE 12 - REGISTER: PS_THDH_L AND PS_THDH_M DESCRIPTION

COMMAND CODE: 0x07_L (0x07 DATA BYTE LOW) AND 0x07_H (0x07 DATA BYTE HIGH)

PS_THDH_L 7 : 0 0x00 to 0xFF, PS interrupt high threshold setting_LSB byte

PS_THDH_M 7 : 0 0x00 to 0xFF, PS interrupt high threshold setting_MSB byte

TABLE 13 - READ OUT REGISTER DESCRIPTION

PS1_Data_L 0x08_L (0x08 data byte low) 7 : 0 0x00 to 0xFF, PS1 LSB output data

PS1_Data_M 0x08_H (0x08 data byte high) 7 : 0 0x00 to 0xFF, PS1 MSB output data

PS2_Data_L 0x09_L (0x09 data byte low) 7 : 0 0x00 to 0xFF, PS2 LSB output data

PS2_Data_M 0x09_H (0x09 data byte high) 7 : 0 0x00 to 0xFF, PS2 MSB output data

PS3_Data_L 0x0A_L (0x0A data byte low) 7 : 0 0x00 to 0xFF, PS3 LSB output data

PS3_Data_M 0x0A_H (0x0A data byte high) 7 : 0 0x00 to 0xFF, PS3 MSB output data

ALS_Data_L 0x0B_L (0x0B data byte low) 7 : 0 0x00 to 0xFF, ALS LSB output data

ALS_Data_M 0x0B_H (0x0B data byte high) 7 : 0 0x00 to 0xFF, ALS MSB output data

White_Data_L 0x0C_L (0x0C data byte low) 7 : 0 0x00 to 0xFF, white LSB output data

White_Data_M 0x0C_H (0x0C data byte high) 7 : 0 0x00 to 0xFF, white LSB output data

Reserved 0x0D_L (0x0D data byte low) 7 : 0 0x00

INT_Flag 0x0D_H (0x0D data byte high)

GESTURE_DATA_READY_FLAG

PS3_SPFLAG, PS entering protection mode

ALS_IF_L, ALS crossing low THD INT trigger event

ALS_IF_H, ALS crossing high THD INT trigger event

PS2_SPFLAG, PS entering protection mode

PS1_SPFLAG, PS entering protection mode

PS_IF_CLOSE, PS rises above PS_THDH INT trigger event

PS_IF_AWAY, PS drops below PS_THDL INT trigger event

ID_L 0x0E_H (0x0E data byte low) 7 : 0 0x80

ID_M 0x0E_H (0x0E data byte high) 7 : 4

3 : 0

(0 : 0 : 0: 0)

Version code default = (0 : 0 : 0 : 0)

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Threshold Window Setting

• ALS Threshold Window Setting (Applying ALS INT)

ALS_THDL_L and ALS_THDL_M defines 16-bit ALS low threshold data for LSB byte and MSB byte. As long as ALS INT

function is enabled, INT will be asserted once the ALS data exceeds ALS_THDH or goes below ALS_THDL. To easily define

the threshold range, multiply the value of the resolution (lux/step) by the threshold level (refer to table 14)

• ALS HD and ALS_NS

These two options enhance the dynamic range by a factor of two each.

With this the sensitivity shown within table 14 will be reduced by the factor 2, but the maximum possible detection range will

be doubled for both options. With this the max. detection range goes up to 4192 lx x 2 x 2 = 16 768 lx

•ALS Persistence

The ALS INT is asserted as long as the ALS value is higher or lower than the threshold window when ALS_PERS

(1, 2, 4, 8 times) is set to one time. If ALS_PERS is set to four times, then the ALS INT will not be asserted if the ALS value is

not over (or lower) than the threshold window for four continued refresh times (integration time)

• Programmable PS Threshold

VCNL4035X01 provides both high and low thresholds for PS (register: PS_THDL, PS_THDH)

•PS Persistence

The PS persistence function (PS_PERS, 1, 2, 3, 4) helps to avoid false trigger of the PS INT. For example, if

PS_PERS = 3 times, the PS INT will not be asserted unless the PS value is greater than the PS threshold (PS_THDH) value

for three periods of time continuously

• PS Active Force mode

An extreme power saving way to use PS is to apply PS active force (register: PS_CONF3 command: PS_FOR = 1) mode.

Anytime host would like to read out just one of PS data, write in ‘1’ at register: PS_CONF3 command: PS_FOR_Trig. Without

commands placed, there is no PS data output. VCNL4035X01 stays in standby mode constantly

• PS detection object

Any color of object is detectable by VCNL4035X01

Data Access

All of VCNL4035X01 command registers are readable. To access 16-bit high resolution ALS output data, it is suitable to use

read word protocol to read out data by just one command at register: ALS_DataL and ALS_DataM. To represent the 16-bit data

of ALS, it has to apply two bytes. One byte is for LSB, and the other byte is for MSB as shown in table 18. In terms of reading

out 8-bit PS data, it is also very convenient to read PS at register: PS_Data.

Intelligent Cancellation

VCNL4035X01 provides an intelligent cancellation method to reduce cross talk phenomenon for the proximity sensor. The

output data will be subtracted by the input value on register: PS_CANC.

TABLE 14 - ALS RESOLUTION AND MAXIMUM DETECTION RANGE

ALS_IT SENSITIVITY MAXIMUM DETECTION

RANGE

ALS_IT

(7 : 5)

INTEGRATION TIME

(typ.)

UNIT

(lux/step)

UNIT

(lux)

(0, 0, 0) 50 ms 0.064 4192

(0, 0, 1) 100 ms 0.032 2096

(0, 1, 0) 200 ms 0.016 1048

(0, 1, 1) 400 ms 0.008 524

(1, 0, 0) to (1, 1, 1) 800 ms 0.004 262

TABLE 15 - 16-BIT ALS DATA FORMAT

VCNL4035X01

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

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Interruption (INT)

VCNL4035X01 has ALS and PS interrupt feature operated by a single pin “INT”. The purpose of the interrupt feature is to actively

inform the host once INT has been asserted. With the interrupt function applied, the host does not need to be constantly pulling

data from the sensor, but to read data from the sensor while receiving interrupt request from the sensor. As long as the host

enables ALS interrupt (register: ALS_INT_EN) or PS interrupt (register: PS_INT) function, the level of INT pin (pin 7) is pulled low

once INT asserted. All registers are accessible even if INT is asserted.

ALS INT asserted when ALS value cross over the value set by register: ALS_THDH or lower than the value set by

PS_INTT = 1 for the best PS detection performance which can be adjusted by high / low THD level of PS. PS INT trigger way is

defined by register: PS_INT.

Interruption Flag

Register: INT_Flag represents all of interrupt trigger status for ALS and PS. Any flag value changes from ‘0’ to ‘1’ state, the level

of INT pin will be pulled low. As long as host reads INT_Flag data, the bit will change from ‘1’ state to ‘0’ state after reading out,

the INT level will be returned to high afterwards.

PROXIMITY DETECTION LOGIC OUTPUT MODE

VCNL4035X01 provides a proximity detection logic output mode that uses INT pin (pin 7) as a proximity detection logic high /

low output (register: PS_MS). When this mode is selected, the PS output (pin 7; INT/Pout) is pulled low when an object is closing

to be detected and returned to level high when the object moves away. Register: PS_THDH / PS_THDL defines how sensitive

PS detection is.

One thing to be stated is that whenever proximity detection logic mode applied, INT pin is only used as a logic high / low output.

If host would like to use ALS with INT function, register: PS_MS has to be selected to normal operation mode (PS_MS = 0).

Meanwhile, host has to simulate the GPIO pin as an INT pin function. If not, host needs to periodically reading the state

of INT at this GPIO pin.

PROXIMITY DETECTION HYSTERESIS

A PS detection hysteresis is important that keeps PS state in a certain range of detection distance. For example, PS INT asserts

when PS value over PS_THDH. Host switches off panel backlight and then clears INT. When PS value is less than PS_THDL,

host switches on panel backlight. Any PS value lower than PS_THDH or higher than PS_THDL, PS INT will not be asserted. Host

does keep the same state.

GESTURE FEATURE WITH VCNL4035X01

VCNL4035X01 allows to connect up to 3 external IREDs. Each may be selected separate to allow for normal proximity.

If one select e.g. IRED2 then also PS2 delivers the corresponding proximity data. To allow for a convenient gesture handling

using all three external IREDs the GESTURE_MODE may be activated (set to “1”).

Within “PS_FORCE_MODE” all three IREDs will be sequentially switched and available proximity result of this directly shown

within the three PS_DATA register.

Beside GESTURE_MODE enabled and PS_FORCE_MODE set this sequence starts direct after setting the PS_TRIG bit.

Availability of the data will be indicated with setting the GESTURE_DATA_READY flag or also the Interrupt if this is set-up also.

Please see below diagram.

Fig. 11 - VCNL4035X01 Gesture Mode Sequence

PS_MS

INT_GESTURE_EN

PS_FORCE_MODE

PS_TRIG

PS_OPERATION_SEQUENCE IRED1 IRED2 IRED3

GESTURE_DATA_READY FLAG

INTERRUPT

GESTURE DATA

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APPLICATION CIRCUIT BLOCK REFERENCE

Fig. 12 - Circuitry with Two Separate Power Supply Sources

Three additional capacitors in the circuit are proposed for the following purposes: (1) the 100 nF capacitor near the VDD pin is

used for power supply noise rejection, (2) the 22 μF plus parallel 100 nF capacitors - connected to the common anode of the

external IREDs / LEDs - are used to prevent the IRED voltage from instantly dropping when an IRED is switched on, and

(3) 2.2 kΩ to 4.7 kΩ are recommended values for the pull up resistor of I2C. The value of the pull-up resistor at the INT line could

be 10 kΩ applied on the INT pin.

Fig. 13 - Circuitry with just One Common Power Supply Source

For high currents of the IREDs and / or power supply close to the lower limit of 2.5 V this R-C decoupling will prevent that the

VDD voltage drop below specified minimum.

The IREDs should come with a peak wavelength between 850 nm and 940 nm to fit to the sensitivity of the proximity photodiode.

Mechanical placement of the external IRED depends on the application. Please study also the AN: designing VCNL4035X01

into an application

GND (3)

VDD (1)

IRED3 (4)

C1 C2

100 nF

22 μF

2.5 V to 5.5 V

1.8 V to 5.5 V

R2 R3 R4

IRED2 (5)

IRED1 (6)

INT (7)

SCL (2)

SDA (8)

I2C bus clock SCL

I2C bus data SDA

GPIO / INT

Host

micro controller

VCNL4035X01

2.5 V to 3.6 V

GND (3)

VDD (1)

IRED3 (4)

C1 C2

100 nF

10 μF

22 μF

10R

2.5 V to 3.6 V

1.8 V to 5.5 V

R2 R3 R4

IRED2 (5)

IRED1 (6)

INT (7)

SCL (2)

SDA (8)

I2C bus clock SCL

I2C bus data SDA

GPIO / INT

Host

micro controller

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PACKAGE DIMENSIONS in millimeters

Technical drawings

according to DIN

specication.

Drawing No.: 6.550-5331.01-4

Issue: 1; 21.02.2017

Not indicated tolerances ± 0.1 mm

0.69

0.76

1.41

1.03

1.951.17

0.405

0.28

0.65 (8 x)

0.185

0.185 Pinning bottom view

LED2

LED1

INT

SDA

Exposed pad is

internally connected

to GND

LED3

GND

SCL

VDD

LED3

GND

SCL

VDD

LED2

LED1

INT

SDA

Pinning top view

Recommended solder foot print

0.75 (8 x)

(2.36)

1.26

2.66

0.3 (6 x)

(4.02)

0.15

1.05

3 x 1.05 = 3.15

0.75

0.8

0.78

0.83

3.145

2.36

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TAPE AND REEL DIMENSIONS in millimeters

Reel-Size:

GS 08: Ø 180 mm ± 2 mm = 1800 pieces

GS 18: Ø 330 mm ± 2 mm = 7000 pieces

reel-design is representative for different types

Drawing No.: 9.800-5128.02-4

Issue: 1; 21.02.2017

Tape- and Reel Dimensions:

non tolerated dimensions ± 0.1 mm

Sensor orientation

Unreel direction

Label posted here

Empty leader 400 mm min.

(Empty trailer 200 mm min.)

Reel-Ø

Ø 13

18.4

0.3

1.3

Ø 1.55

1.75

5.5

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SOLDER PROFILE

Fig. 14 - Lead (Pb)-free Reflow Solder Profile

according to J-STD-020

DRYPACK

Devices are packed in moisture barrier bags (MBB) to

prevent the products from moisture absorption during

transportation and storage. Each bag contains a desiccant.

FLOOR LIFE

Floor life (time between soldering and removing from MBB)

must not exceed the time indicated on MBB label:

Floor life: 168 h

Conditions: Tamb < 30 °C, RH < 60 %

Moisture sensitivity level 3, according to J-STD-020.

DRYING

In case of moisture absorption devices should be baked

before soldering. Conditions see J-STD-020 or label.

Devices taped on reel dry using recommended conditions

192 h at 40 °C (+ 5 °C), RH < 5 %.

240 °C

Max. 260 °C

217 °C

255 °C

19841

100

1000

10000

100

200

300

0 50 100 150 200 300

Axis Title

1st line

2nd line

Temperature (°C)

Time (s)

150

250

245 °C

Max. 100 s

Max. 30 s

Max. 120 s

Max. ramp down 6 °C/s

Max. ramp up 3 °C/s

Legal Disclaimer Notice

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