Gravity MCP23017 I2C 16 Digital IO Expansion Module

The DFRobot Gravity IO expansion module with the MCP23017 adds 16 digital inputs and outputs via I2C. The address is set between 0x20 and 0x27 with a DIP switch, so up to eight modules run on the same bus, 128 pins in total. The module works with 3.3 V and 5 V, for example on Arduino, ESP32 or Raspberry Pi.

With 24 pins there is the Gravity CH423 I2C 24 Digital IO Port Expander.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces

Features:

• Two groups GPIOA (PA0 to PA7) and GPIOB (PB0 to PB7) with 8 pins each
• Each pin configurable as input, output, input with pull-up (100 kΩ) or interrupt
• Interrupt outputs IA for GPIOA and IB for GPIOB, they go HIGH on an interrupt
• I2C address 0x20 to 0x27 via DIP switch A0, A1, A2
• Several VCC and GND pins, reset pin RST, power LED
• Gravity I2C 4-pin connector: VCC, GND, SCL, SDA

Application Examples:

• More inputs and outputs for robots and controllers
• Many buttons, LEDs or relay modules on one microcontroller
• Interactive installations and LED cubes

Documentation:

• Wiki DFRobot DFR0626 with Arduino examples
• DFRobot_MCP23017 library (GitHub)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0626
• Chip: MCP23017
• Operating voltage: 3.3 V to 5.5 V
• I2C address: 0x20 to 0x27
• Inputs and outputs: 16 (PA0 to PA7, PB0 to PB7)
• Current per output: 20 mA
• Interrupt pins: IA, IB
• Dimensions: 44 × 32 × 11 mm
• Weight: 18 g

Scope of Delivery:

• 1× Gravity MCP23017 I2C 16 Digital IO Expansion Module
• 1× Gravity I2C cable 4-pin