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PL2303
PL2303
USB UART bridge
PL2303HX is a USB to Serial Bridge Controller that supports RS-232, RS-422/RS-485 interfaces and provides GPIO pins.
In stock
Specifications
8- Operating Voltage
- 3.0V~5.5V
- Supply Current
- 12mA (typical) (@ 5V, 48MHz)
- Interface
- USB
- Resolution
- 12-bit
- Range
- 0~3.3V (for 3.3V serial port) (@ VDD_325 = 3.3V)
- Accuracy
- ±1%
- Temperature Range
- -40°C~85°C
- Package
- SSOP28, QFN32
Pinout
28| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | TXD | GPIO | Serial Port (Transmitted Data) |
| 2 | DTR_N | GPIO | Serial Port (Data Terminal Ready) |
| 3 | RTS_N | GPIO | Serial Port (Request To Send) |
| 4 | VDD_325 | POWER | RS232 VDD. The power pin for the serial port signals. |
| 5 | RXD | GPIO | Serial Port (Received Data) |
| 6 | RI_N | GPIO | Serial Port (Ring Indicator); or Auxiliary General Purpose I/O Port when enabled |
| 7 | GND | GND | Ground |
| 8 | NC | — | - No Connection |
| 9 | DSR_N | GPIO | Serial Port (Data Set Ready); or Auxiliary General Purpose I/O Port when enabled |
| 10 | DCD_N | GPIO | Serial Port (Data Carrier Detect); or Auxiliary General Purpose I/O Port when enabled |
| 11 | CTS_N | GPIO | Serial Port (Clear to Send); or Auxiliary General Purpose I/O Port when enabled |
| 12 | SHTD_N | GPIO | RS232 Transceiver Shut Down Control |
| 13 | GP3 | GPIO | Auxiliary GPIO Pin 3 (Default output high mode) |
| 14 | GP2 | GPIO | Auxiliary GPIO Pin 2 (Default output high mode) |
| 15 | DP | I2C | USB Port D+ signal |
| 16 | DM | I2C | USB Port D- signal |
| 17 | VO_33 | POWER | Regulator Power Output, 3.3V |
| 18 | GND | GND | Ground |
| 19 | RESET_N | GPIO | External System Reset (Active Low) |
| 20 | VDD_5 | POWER | USB Port VBUS, 5V Power. (6.5V for OTPROM writing voltage). |
| 21 | NC | — | - No Connection |
| 22 | GP0 | GPIO | General Purpose I/O Pin 0 |
| 23 | GP1 | GPIO | General Purpose I/O Pin 1 |
| 24 | NC | — | - No Connection |
| 25 | GND | GND | Ground |
| 26 | TEST | GPIO | Test mode control |
| 27 | NC | — | - No Connection |
| 28 | Reserved | — | Reserved pin (Must be floating) |
Interactive pinout
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PL2303
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