Waveshare MCP23017 IO Expansion Board, Expands 16 I/O Pins

Waveshare MCP23017 IO Expansion Board, Expands 16 I/O Pins

The MCP23017 IO Expansion Board expands 2 signal pins as 16 I/O pins based on the I2C bus, up to 8 MCP23017 IO Expansion Board can be used at the same time, providing up to 128 I/O pins, it is compatible with both 3.3V and 5V levels.

User Manual / Datasheet / Example Codes Etc.

• I2C controlled, expands 2 signal pins as 16 I/O pins
  
• I2C address configurable by shorting the A0/A1/A2 jumpers
• Provides two connector options: PH2.0 terminal 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: 5V/3.3V
• Interface: I2C
• Interrupt pins: INTA, INTB
• Expansion I/Os: 16
• Dimension: 38mm × 23mm
• Mounting hole size: 2.0mm

Package Includes

• 1x MCP23017 IO Expansion Board
• 1x PH2.0 20cm 6Pin

Interface Definition

        PIN     I2C

• VCC : Power supply, 3.3V/5V
• GND : Ground
• SDA : I2C data line
• SCL : I2C clock line
• INTA : PA group interrupt output
• INTB : PB group interrupt output