WCH CH340 USB Serial Adapter Products
Created:
12Nov2023 01:15:16 UTC
2023-11-12T01:15:16Z
Updated:
12May2024 02:01:03 UTC
2024-05-12T02:01:03Z
Description
A common and inexpensive USB Serial Adapter is the CH340 ICIntegrated Circuit, which converts USB signals to 2-wire UARTUniversal Asynchronous Receiver-Transmitter (TXTransmit, RXReceive) for 5V and 3.3V systems. It operates at USB Full Speed and supports baud rates from 50bps to 2Mbps. This adapter should auto install on most operating systems without the need for additional drivers. The CH340 has power pins (VCC, GND), data pins (TX, RX), and control pins (DTR, CTR), defined in the table below.
Pin | Description |
---|---|
VCC | Power supply 3.3V (default) or 5V |
GND | Common ground for power and logic. |
TX | UARTUniversal Asynchronous Receiver-Transmitter data transmit pin. This pin sends the serial output. |
RX | UARTUniversal Asynchronous Receiver-Transmitter data receive pin. This pin receives the serial input. |
DTR | Data Terminal Ready output. This pin is active low. |
CTR | Clear To Send control input. This pin is active low. |
Specs
Feature | Description |
---|---|
Manufacturer |
Jiangsu Qinheng / WCHWinChipHead, also known as Nanjing Qinheng Microelectronics Co.
Product Page |
Protocol Support | UARTUniversal Asynchronous Receiver-Transmitter |
I/O Voltage | 3.3V / 5V |
Max Baud Rate | 2 Mbps |
Datasheet | CH340 Datasheet (PDF) |
Products
- 1x USB Serial Adapter
- 1x USB Serial Adapter
- 1x USB Serial Adapter
- 1x USB Serial Adapter
- 5x USB Serial Adapter
- 2x USB Serial Adapter
- 1x 6-Pin Female to Female Dupont Cable
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