APDS-9500 Datasheet APDS-9500 | P31-P33

Note that the built-in IR LED cathode is internally connected to the LED-K pin.

The APDS-9500 provides for an additional LED drive with the LDR_2 pin. If an external IR LED is to be used, connect it

to the LDR_2 pin as shown below.

It is possible to combine the drive current of the two LED drive pins together. In this case, the connection is shown

below.

GND

LED-A

LDR_2

LED-K_1

SPI_CLK

SPI_CSn

VDDAY_I/O

VDDA_I/O

VDD18_I/O

VDD

SPI_DATA

SPI_MCLK

VIO

APDS-9500

10 μF

1 μF

VLED

External LED

GND

LED-A

LDR_2

LED-K_1

SPI_CLK

SPI_CSn

VDDAY_I/O

VDDA_I/O

VDD18_I/O

VDD

SPI_DATA

SPI_MCLK

VIO

APDS-9500

10 μF

1 μF

VLED

Programming and Application  rmware

This section provides the basic  rmware initialization of the recommended register settings for di erent APDS-9500

modes.

i. Initialization

Step 1: Power on. The VBus must be powered up before VDD.

Step 2: Wait 700 s for APDS-9500 to stabilize.

Step 3: Write slave ID or I

C read command to process I

C wake-up.

Read Reg_0x00. It returns 0x20 when system wake-up is complete.

Note that there is no-ack from the APDS-9500 before wake-up is completed.

Step 4: Write initial setting to gesture.

unsigned char initial_register_array[][2] = {

{0xEF,0x00},

{0x37,0x07},

{0x38,0x17},

{0x39,0x06},

{0x42,0x01},

{0x46,0x2D},

{0x47,0x0F},

{0x48,0x3C},

{0x49,0x00},

{0x4A,0x1E},

{0x4C,0x20},

{0x51,0x10},

{0x5E,0x10},

{0x60,0x27},

{0x80,0x42},

{0x81,0x44},

{0x82,0x04},

{0x8B,0x01},

{0x90,0x06},

{0x95,0x0A},

{0x96,0x0C},

{0x97,0x05},

{0x9A,0x14},

{0x9C,0x3F},

{0xA5,0x19},

{0xCC,0x19},

{0xCD,0x0B},

{0xCE,0x03},

{0xCF,0x64},

{0xD0,0x21},

{0xEF,0x01},

{0x02,0x0F},

{0x03,0x10},

{0x04,0x02},

{0x25,0x01},

{0x27,0x39},

{0x28,0x7F},

{0x29,0x08},

{0x3E,0xFF},

{0x5E,0x3D},

{0x65,0x96},

{0x67,0x97},

{0x69,0xCD},

{0x6A,0x01},

{0x6D,0x2C},

{0x6E,0x01},

{0x72,0x01},

{0x73,0x35},

{0x74,0x00},

{0x77,0x01},

};

ii. Get Gesture result

Step 1: Set Interrupt or I

C polling timer.

Step 2: Read Bank_0_Reg_0x43/0x44 for gesture result if interrupt or timer event occurs.

Gesture result clears when I

C read is complete.

iii. Change to PS mode

Step 1: Write PS mode setting to gesture.

unsigned char change_to_proximity_register_array[][2] = {

{0xEF,0x00},

{0x41,0x00},

{0x42,0x02},

{0x48,0x20},

{0x49,0x00},

{0x51,0x13},

{0x83,0x00},

{0x9F,0xF8},

{0x69,0x96},

{0x6A,0x02},

{0xEF,0x01},

{0x01,0x1E},

{0x02,0x0F},

{0x03,0x10},

{0x04,0x02},

{0x41,0x50},

{0x43,0x34},

{0x65,0xCE},

{0x66,0x0B},

{0x67,0xCE},

{0x68,0x0B},

{0x69,0xE9},

{0x6A,0x05},

{0x6B,0x50},

{0x6C,0xC3},

{0x6D,0x50},

{0x6E,0xC3},

{0x74,0x05},

};

iv. Get PS approach status

Step 1: Read Bank_0_Reg_0x6B for PS approach status or read Bank_0_Reg_0x6C for PS raw data.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36

APDS-9500

Mfr. #:

Buy APDS-9500

Manufacturer:

Broadcom / Avago

Description:

Proximity Sensors Imaging Gesture and Proximity Sensor

Lifecycle:

New from this manufacturer.

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APDS-9500