AW9523B IO Expansion Board, I2C Interface, Expands 16 I/O Pins

SKU: 22132
Part Number: AW9523B IO Expansion Board
Brand: Waveshare




AW9523B IO Expansion Board, I2C Interface, Expands 16 I/O Pins
AW9523B IO Expansion Board

Controlled via I2C Bus

Allows using 4 Expansion Boards at the same time, Expanding up to 64 I/O ports

Features At A Glance
  • I2C bus, allows expanding 16 I/O ports by just using two wires
  • Support driving 16-ch common anode constant current LED, 256-step linear dimming, current controllable
  • Output interrupt (INT) signal when changing the state of an input port
  • I2C address configurable by shorting the A0/A1 jumpers
  • Provides two connector options: PH2.0 header and/or solder pads, allows multi I2C modules to be stacked
  • Onboard voltage translator, compatible with 3.3V/5V level
  • Comes with development resources and manual (examples for Raspberry Pi / micro:bit / Arduino / STM32)
Operating Voltage 2.4-5.5V
Operating Temperature -40-85℃
Low Standby Current <0.1µA
Controlling Interface I2C
Expanted I/O Pin 16
Dimensions 38x23mm
Header definition
Pin I2C interface
VCC Power (support 3.3V / 5V input)
GND Ground
SDA I2C data pin
SCL I2C clock pin
INT Interrupt output
RST Hardware reset
Hardware Connection

Connect to Raspberry Pi

Connect to Arduino

Connect to STM32

Outline dimensions
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

Weight: 0.01 kg

Quick Overview

  1. AW9523B IO Expansion Board x1
  2. PH2.0 6PIN wire x1