Data Sheet

ManualsBrandsPimoroni ManualsInfrared & Light SensorsLTR-559 Light & Proximity Sensor Breakout Board

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Part No. : LTR-559ALS-01

BNS-OD-FC002/A4

Optical Sensor

LTR-559ALS-01

PS_DATA_0 Register (0x8D / 0x8E) (Read Only)

The PS ADC channel data are expressed as a 11-bit data spread over two registers. The PS_DATA_0 and PS_DATA_1

registers provide the lower and upper byte respectively. When the I

C read operation starts, both the registers are locked

until the I

C read operation is completed. This will ensure that the data in the registers is from the same measurement

even if an additional integration cycle ends during the read operation. New measurement data is stored into temporary

registers and the PS_DATA registers are updated as soon as there is no on-going I

C read operation.

PS Saturation Flag is used for monitoring the internal IC saturation. It will be flagged when the IC has reached saturation

and not able to perform any further PS measurement. The PS Saturation Indicator Enable bit in PS_CONTR Register

(0x81) has to be enabled in order to use this feature. If it is not enable, the flag will always be indicated as 0.

Field

Address

Bits

Default

Type

Description

PS Data, Low

0x8D

7:0

00000000

PS ADC lower byte data

PS Saturation Flag

0x8E

PS not saturated

PS saturated

Reserved

0x8E

6:3

00000

PS Data, High

0x8E

2:0

000

PS ADC upper byte data

0x8D

PS_DATA_0 (default = 0x00)

PS Data Low

0x8E

PS_DATA_1 (default = 0x00)

Saturation

Flag

Reserved

PS Data High