Units – Official Extend Serial I/O Unit

 



Description


EXT.IO is a GOIO Expander. With simple I2C commands you can have up to 8 GPIOs.

Integrates PCA9554PW. This 8-bit I/O expander for the two-line bidirectionalbus (I2C) is designed for 2.3-V to 5.5-V VCC, Open-Drain Active-Low Interrupt Output operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface.

IIC address: 0x27.

It’s difficult to foresee the needs of your project from the start. EXT.IO is the perfect solution for expanding the number of IO. It allows you to add new features, logic,timing and sensing to alrady highly integrated designs.

 

Feature


  • Expanded I/O number: 8
  • Program Platform : Arduino, UIFlow(Blockly, Python)
  • Two Lego-compatible holes

 

Source PinMap


M5Core(GROVE A) GPIO22 GPIO21 5V GND
EXT.IO Unit SCL SDA 5V GND

Include


  • 1x EXT.IO Unit
  • 1x Grove Cable

 

Datasheet