AS7150 datasheet(49/159 Pages) AMSOSRAM

49 / 159 page

AS7150

Functional description

Datasheet • PUBLIC • Document Feedback

DS001130 • v3-00 • 2026-Jan-26

49 / 159

7.9

Communication interfaces

7.9.1

Interrupt output pin

The interrupt manager processes the interrupt events. These interrupt events must be

released for processing via an interrupt enable register IRQ_ENABLE. The dedicated interrupt

status bit is automatically reset when the corresponding sub-status register is read (auto-zero

interrupt events may be lost.

7.9.2

I²C interface

The AS7150 AFE provides a digital I²C slave interface used for the external control of the

measurement setup and the control of all functions for the internal features. It supports single

and burst access via the I²C. Single access requires about 50% more time compared to burst

access, for the transmission of the same amount of data.

The AS7150 I²C slave uses an I²C address of 0x55 (7-bit format; 1-bit R/W bit has to be

added) respectively 60 h and 61 h. It expects external pull-up resistors.

I²C feature list:

•

Fast mode (400 kHz) and standard mode (100 kHz) support.

•

7+1-bit addressing mode.

•

Write formats: Single-Byte-Write, Burst-Write.

•

Read formats: Current-Address-Read, Random-Read, Sequential-Read.

•

SDA input delay and SCL spike filtering by integrated RC-components.

AS7150 Datasheet(PDF) 49 Page - ams-OSRAM AG