ISO 7816 smart card contacts are the 8-pad contact array on chip cards (SIM, bank cards, ID cards). The C1-C8 contacts carry VCC, RST, CLK, GND, VPP, IO, and optional USB/UART signals.
| Pin | Name | Function | Type |
|---|---|---|---|
| C1 | VCC | Supply voltage 5V 3V or 1.8V | PWR |
| C2 | RST | Card reset active low | I/O |
| C3 | CLK | Clock signal up to 5 MHz | BUS |
| C4 | RFU | Reserved for future use | I/O |
| C5 | GND | Ground | GND |
| C6 | VPP | Programming voltage optional | PWR |
| C7 | I/O | Bidirectional data line | BUS |
| C8 | RFU | Reserved for future use | I/O |
ISO 7816 smart card contacts are the 8-pad contact array on chip cards (SIM, bank cards, ID cards). The C1-C8 contacts carry VCC, RST, CLK, GND, VPP, IO, and optional USB/UART signals.