Waveshare AW9523B IO Expansion Board, I2C Interface, Expands 16 I/O Pins
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DESCRIPTION
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)
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 |
Hardware Connection
Connect To Raspberry Pi
Outline Dimensions
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