3Pcs MCP23017 I/O Expansion Module I2C IIC Supports For Arduino Raspberry Pi Micro:bit STM32

Feature I2C interface control only 2 signal lines are needed to expand 16 I O portsI2C communication address can be set short circuit A0 A1 A2 solder joint can modify the communication addressProvide two interface types PH2 0 terminal and pad support multiple I2C modules in parallelOnboard level conversion circuit compatible with 3 3V 5V working levelProvide complete supporting information manual Raspberry Micro bit Arduino STM32 sample program and user manual etc Parameter Working voltage 5V 3 3VControl interface I2CInterrupt pins INTA INTBNumber of expansion I O ports 16Product size 38mm 23mmVia diameter 2 0mmPin FunctionI2C interfaceVCCPositive power supply can be connected to 3 3V 5V power supplyGNDPower groundSDAI2C data cableSCLI2C clock lineINTAPA group port interrupt outputINTBPB group port interrupt outputPackage includes 3 x Expansion Module3 x PH2 0 6PIN cable 20cm