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AS7331

Functional Description

Datasheet

• PUBLIC

DS001047

• v4-00 • 2023-Mar-24

│ 17

Any active measurement is stopped and all output result registers as well as the status register are

reset as well.

7.2

Measurement Modes

The AS7331 provides four different modes to perform the measurement. The register

CREG3:MMODE (see Figure 50) defines the measurement mode that is performed by the device. In

general, it is recommended not to communicate via the I²C during the conversion. Use pause times

between two conversion cycles for data transfer via the I²C interface. To support such behavior, a

variable pause time (TBREAK) is implemented (register BREAK in Figure 51), which delays the start of

the next conversion cycle in the measurement modes CONT, SYNS, and SYND. The I²C commands

sent to the AS7331 always take effect after the complete I²C write cycle with an I²C stop condition at

the end.

7.2.1

Continuous Measurement Mode

– CONT

The A/D conversion is sequentially performed. The first conversion starts by setting the bit OSR:SS to

“1”. If the power down or Standby option is switched on, the device deactivates it and initializes the

continuous measurement. The measurement can only be stopped by resetting the OSR:SS bit.

AS7331 Folha de dados(PDF) 18 Page - OSRAM GmbH