SFH5721 datasheet(22/54 Pages) OSRAM

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SFH 5721

DATASHEET

22 | Version 1.1 | 2022-02-28

Operation Selection Register (OPSEL)

0x00

Bit

NAME

R/W

Default

Description

RESET

R/W

Reset to Default State

R/W

Not used

SYNC

R/W

Synchronous Mode

SINGLE

R/W

Single-shot Mode

R/W

Not used

EN3

R/W

Enable Control ALS Channel

EN2

R/W

Enable Control IR Channel

EN1

R/W

Enable Control Dark Channel

The OPSEL register is used for selecting the operation of the IC.

The EN1 to EN3 bits are used for enabling the four readout channels. The SINGLE bit is used to

enable the single-shot operation mode. In single-shot operation mode a single measurement is

performed after which the circuit returns to standby. In single shot mode, the interrupt function is

disabled. The SYNC bit is used to enable the synchronous operation mode. In synchronous

operation mode, interrupt pin is used as input to enable the start of the measurement. The

measurement is started with the negative edge of the INT pin. The safest way of enabling SYNC

mode is by first making INT bit HIGH and then enabling the SYNC. The RESET bit is used for

restoring the default register settings. Writing a ‘1’ to the RESET bit will restore the default settings.

If a measurement is running, writing OPSEL register will restart the measurement. This is only the

case if one of the EN1 to EN3 bits are set to ‘1’ with this I2C write.

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