| Pin Name | Pin Description | Type | |
|---|---|---|---|
| Master | Slave | ||
| MISO | Master In Slave Out | Input | Output |
| MOSI | Master Out Slave In | Output | Input |
| SPCK | Serial Clock | Output | Input |
| NPCS1–NPCS3 | Peripheral Chip Selects | Output | Unused |
| NPCS0/NSS | Peripheral Chip Select/Slave Select | Output | Input |