Features

• 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)

      Specifications

• 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

Outline Dimensions

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