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AS7331

Datasheet

• PUBLIC

DS001047

• v4-00 • 2023-Mar-24

│ 55

8.2.5

Configuration Register 3

– CREG3 (Address 8h)

Figure 50:

Configuration Register 3

Addr: 8h

CREG3

Bit

Bit Name

Default

Access

Bit Description

7:6

MMODE

Value [b]

Function

CONT mode (continuous

measurement).

CMD mode (measurement

per command).

SYNS mode (externally

synchronized start of

measurement).

SYND mode (start and

end of measurement are

externally synchronized).

Value [b]

Function

Standby is switched OFF.

Standby is switched ON.

RDYOD

Value [b]

Function

Pin READY operates as

Push Pull output.

Pin READY operates as

Open Drain output.

1:0

CCLK

Value [b]

Internal clock frequency

fCLK

1.024 MHz

2.048 MHz

4.096 MHz

8.192 MHz

The bits CREG3:MMODE specify the measurement mode, which should be compatible with the given

application.

The bit CREG3:SB controls the operational state Standby of the AS7331. In the Standby state the

power consumption of the device is reduced, but the internal circuit is ready to continue after 4 µs

wake-up time by switching off Standby.

With bit CREG3:RDYOD the output READY pin can be changed from push-pull to open-drain

behavior. The open-drain output allows running two or more AS7331 simultaneously whilst connected

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