SF100 ISP Header Pin Out (2x7)
| 1 | I/O1 | I/O4 | 2 |
| 3 | I/O2 or CS2 | NC | 4 |
| 5 | Vcc | GND | 6 |
| 7 | CS | CLK | 8 |
| 9 | MISO | MOSI | 10 |
| 11 | Vpp/Acc | I/O3 | 12 |
| 13 | SCL | SDA | 14 |
SF100 ISP Cable Connector Pin Out (2x4)
| 1 | Vcc | GND | 2 |
| 3 | CS | CLK | 4 |
| 5 | MISO | MOSI | 6 |
| 7 | Vpp/Acc | I/O3 | 8 |