Pin Number |
Pin Name |
Direction | Pin Number |
Pin Name |
Description (may be empty) |
not used | |||||
2 | Rx | 3 | Tx | ||
3 | Tx | 2 | Rx | ||
not used | |||||
5 | GND | 5 | GND | ||
not used | |||||
not used | |||||
not used | |||||
not used |
The absolute bare minimum: just Rx, Tx, and GND. No hardware flow control whatsoever.