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AS7331

Functional Description

Datasheet

• PUBLIC

DS001047

• v4-00 • 2023-Mar-24

│ 16

Figure 11:

Simplified State Diagram

7.1.1

Configuration State

This state enables access to the configuration registers (CREG1, CREG2, and CREG3). Irradiance

responsivity (Re) and conversion time (TCONV) can be determined by the settings of the registers

CREG1:GAIN and CREG1:TIME as well as the kind of measurement mode that can be chosen via the

the measurement result registers is disabled.

7.1.2

Measurement State

In this state the signal-to-digital conversion can be performed. Access to the output result registers is

enabled, but at this time, there is no access possible to the configuration registers. Specific settings for

the measurement should be performed by programming the configuration registers before the

measurement is started (see chapter 8.2.6). The change between the Configuration and Measurement

states can be performed by programming the DOS value of the operational state register OSR (see

Figure 45). Afterward, a change from Measurement state to Configuration state will occur immediately.

Power On

OSR

Power Down

Configuration

State

Measurement

State

PD: 0"

DOS: 010

PD: 0

DOS: 011

End of

conversion

VDD > VDD-POR

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