Single-Chip USB to UART Bridge
| Pin | Name | Type |
|---|---|---|
| 7 | VREGIN | power_in |
| 8 | VBUS | input |
| 4 | D+ | bidirectional |
| 5 | D- | bidirectional |
| 19 | GPIO.0/TXT | bidirectional |
| 18 | GPIO.1/RXT | bidirectional |
| 17 | GPIO.2/RS485 | bidirectional |
| 16 | GPIO.3/WAKEUP | bidirectional |
| 22 | GPIO.4 | bidirectional |
| 21 | GPIO.5 | bidirectional |
| 20 | GPIO.6 | bidirectional |
| 10 | NC | passive |
| 6 | VDD | power_in |
| 3 | GND | power_in |
| 29 | EP(GND) | power_in |
| 9 | ~{RST} | bidirectional |
| 12 | SUSPEND | output |
| 11 | ~{SUSPEND} | output |
| 15 | CHR0 | output |
| 14 | CHR1 | output |
| 13 | CHREN | output |
| 2 | RI/CLK | bidirectional |
| 1 | DCD | input |
| 28 | DTR | output |
| 27 | DSR | input |
| 26 | TXD | output |
| 25 | RXD | input |
| 24 | RTS | output |
| 23 | CTS | input |
