[chip-hold]MCP23017 IIC to 16CH GPIO Expander Board

Description

• Using the original imported MCP23017 chip, the I2C interface is converted into 16-channel IO
• 16 IOs can be input or output
• Support to set pull-up resistor
• Support to enable Interrupt function
• IO drive capability up to 25mA
• I2C interface can support rate 100K 400K 1.7M
• The module I2C address line can be selected by itself.  Up to eight different addresses can be applied to modules.
• Support arduino by libaries.