Waveshare MCP23017 IO Expansion Board Expands 16 I/O Pins for Raspberry Pi

OverviewThe MCP23017 IO Expansion Board expands 2 signal pins as 16 I O pins based on the I2C bus up to 8 MCP23017 IO Expansion Board can be used at the same time providing up to 128 I O pins it is compatible with both 3 3V and 5V levels FeaturesI2C controlled expands 2 signal pins as 16 I O pinsI2C address configurable by shorting the A0 A1 A2 jumpersProvides two connector options PH2 0 terminal and or solder pads allows multi I2C modules to be stackedOnboard voltage translator compatible with 3 3V 5V levelComes with development resources and manual examples for Raspberry Pi micro bit STM32 SpecificationsOperating voltage 5V 3 3VInterface I2CInterrupt pins INTA INTBExpansion I Os 16Dimension 38mm 23mmMounting hole size 2 0mmInterface DefinitionPINI2CVCCPower supply 3 3V 5VGNDGroundSDAI2C data lineSCLI2C clock lineINTAPA group interrupt outputINTBPB group interrupt outputWiki http www waveshare com wiki MCP23017 IO Expansion BoardPackage Included 1 MCP23017 Board1 Cable