Version 1.1

SFH 7771

22.04.2016

5

Measurement modes





If V

shown in the transition-diagram above it is possible to switch between all modes without any restriction.



Mode

Description

OFF

The device is inactive. Other units may use the I²C bus without any restrictions; I/O

pins and INT are in high Z state. There is no sink current through the LED

STAND-BY

This is the initial mode after power-up. I

performed. Device can be activated by I²C bus communication. Data registers can

be read and written.

ALS / PS



free running

Measurements are triggered internally by the SFH 7771. Stand-by / active mode for

ALS and PS, measurement times, interrupt options and LED current can be

adjusted via I²C register. Measurement results can be read from the data register,

the status from the interrupt register.