PL2303 USB UART Module (USB-A)

This is a USB to UART conversion board featuring a PL2303GS USB to serial bridge chip, RS/TX/Power indication LEDS and a USB-A connector.

We also stock a version with a Micro-USB connector and a USB-C connector.

Note: the module is compatible with TTL level only, to avoid damage please do not directly connect to an RS232 circuit.

Features

• PL2303GS onboard
• Supports windows 7/8/8.1/10/11
• 3 VCCIO power mode via jumper setting:
  • VCCIO – 5V: 5V output
  • VCCIO – 3.3V: 3.3V output
  • Open jumper: powered from target board (1.8V/2.5V/3.3V/5V)
• 3 LED indicators: TXD, RXD and POWER

Pinout

When working with an MCU such as the ATMEGA 328:

• VCCIO ↔ 3.3V or 5V output (the module is powered from USB, the onboard jumper should be shorted to 3.3V or 5V)
• GND ↔ GND
• TXD ↔ MCU.RX (signal direction: MCU.RX << PL2303 << PC.TX)
• RXD ↔ MCU.TX (signal direction: MCU.TX >> PL2303 >> PC.RX)

Package Contents

• 1x PL2303 USB UART Board (type A) V2
• 1x 4-pin custom jumper cable (female to female)

Resources

• Waveshare Wiki (Directs to the USB-C version which works in the same way – no separate Wiki for the USB-A version)