Smart Card Guy

Smart Card, Java Card, PCI DSS, IoT Device Security

Smart Card Pinout


Smartcard Pinout


  • C1 - VCC : Power supply
  • C2 - RST : Reset signal, used to reset the card's communications.
  • C3 - CLK : Provides the card with a clock signal, from which data communications timing is derived.
  • C4 : AUX1. Used for USB interfaces and other uses.
  • C5 - GND : Ground (reference voltage)
  • C6 - VPP : ISO/IEC 7816-3:1997 designated this as a programming voltage: an input for a higher voltage to program persistent memory (e.g., EEPROM). ISO/IEC 7816-3:2006 designates it SPU, for either standard or proprietary use, as input and/or output.
  • C7 - I/O : Serial input and output (half-duplex).
  • C8 : AUX2. Used for USB interfaces and other uses.