| Pin | Signal | Description |
| 1 | USB_P | USB +5v Vcc |
| 2 | Tx | |
| 3 | Rx | |
| 4 | Rx2 | USB D? (for Nokia 6234, not sure about 7370) |
| 5 | Vpp | |
| 6 | MBus | |
| 7 | GND | |
| A | Vbat+ | |
| B | GND | |
| C | BSI |

| Pin | Signal | Description |
| 1 | USB_P | USB +5v Vcc |
| 2 | Tx | |
| 3 | Rx | |
| 4 | Rx2 | USB D? (for Nokia 6234, not sure about 7370) |
| 5 | Vpp | |
| 6 | MBus | |
| 7 | GND | |
| A | Vbat+ | |
| B | GND | |
| C | BSI |