DFRobot Gravity MCP23017 I2C 16 Digital IO Expansion Module

This is an IO expansion module based on the MCP23017 chip. The module can expand up to 16 IOs. It can be configured with 8 different I2C addresses, meaning you can connect up to 8 of these modules to the microcontroller, allowing for a maximum expansion of 128 IOs. The module features 2 groups of IO pins, GPIOA and GPIOB. Each group has 8 independent IO interfaces, and each IO interface can be set as an input, output, pull-up input (100KΩ pull-up resistor), interrupt, etc. Additionally, the module has 2 interrupt pins, IA and IB. IA is used to detect interrupts from the IO interfaces of GPIOA, while IB is used for interrupts from the IO interfaces of GPIOB. When a pin from GPIOA or GPIOB changes state, the corresponding IA or IB generates a high-level signal.

Features:

• Expandable up to 128 I/O
• Compatible with 3.3V and 5V
• Switchable I2C address via selector switch
• Multiple VCC and GND pins

Technical Details:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0626
• Operating Voltage: 3.3-5.5V
• I2C Address: 0x20-0x27
• Digital Input/Output: 20mA
• Interrupt Pin: IA, IB
• Dimensions: 44 x 32 x 11mm
• Weight: 18g

Package Includes:

• 1x Gravity MCP23017 I2C 16 Digital IO Expansion Module
• 1x Gravity-4p I2C/UART Cable.