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EXPAND 2 click is an accessory board in mikroBUS form factor. It includes the MCP23017 16-bit I/O expander which features an I2C interface and clock speeds up to 1.7 MHz. Three HARDWARE ADDRESS SEL jumpers allow you to configure the board address and connect up to eight devices on the bus. The controller also supports an interrupt-on-change feature, and has optional weak pull-ups on each input. Expand2 click is set to use a 3.3V power supply by default but you can solder PWR SEL SMD jumper to the 5V position if used with 5V systems. |
