Single-Chip USB to Dual UART Bridge
| Pin | Name | Type |
|---|---|---|
| 7 | REGIN | power_in |
| 8 | VBUS | input |
| 3 | D+ | bidirectional |
| 4 | D- | bidirectional |
| 6 | VDD | power_in |
| 5 | VIO | power_in |
| 2 | GND | power_in |
| 25 | EP | power_in |
| 9 | ~{RST} | bidirectional |
| 1 | ~{SUSPEND}/RI_SCI | input |
| 24 | GPIO.0_SCI/DCD_SCI | bidirectional |
| 23 | GPIO.1_SCI/DTR_SCI | bidirectional |
| 22 | GPIO.2_SCI/DSR_SCI | bidirectional |
| 21 | TXD_SCI | output |
| 20 | RXD_SCI | input |
| 19 | RTS_SCI | output |
| 18 | CTS_SCI | input |
| 17 | ~{SUSPEND}/RI_ECI | input |
| 16 | NC/VPP/DCD_ECI | input |
| 15 | GPIO.0_ECI/DTR_ECI | bidirectional |
| 14 | GPIO.1_ECI/DSR_ECI | bidirectional |
| 13 | TXD_ECI | output |
| 12 | RXD_ECI | input |
| 11 | RTS_ECI | output |
| 10 | CTS_ECI | input |
