# USB to TTL converter module, CH340, MSOP10, Type-C, 3.3-5V

> USB Type-C to TTL converter module based on the CH340E chip, in MSOP10 package, with selectable operating voltage of 3.3V/5V. It features LED indicators for Power, TX and RX, is compatible with Arduino Pro Mini, and is used for programming and debugging microcontrollers via serial communication. Compatible with Windows 98 through Win10 (32/64 bit). Dimensions: 18 x 16mm.

- Page: https://sigmanortec.ro/en/usb-to-ttl-converter-module-ch340-msop10-type-c-33-5v
- Price: 7.94 RON
- Availability: In stock; 1-2 zile
- Reference: 9718 · EAN: 5948487054114
- Category: Mechatronics and IoT > Programming
- Specifications: Input Voltage: 3.3 - 5 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.003 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

USB Type-C to TTL converter with CH340E, ideal for programming and debugging microcontrollers and boards such as Arduino Pro Mini through stable serial communication. It offers selectable 3.3V or 5V power supply, has LEDs for Power, TX and RX for quick verification, is compact and easy to integrate into projects, compatible with most Windows versions.
USB to TTL Programmer Module using the CH340E integrated circuit, compatible with Arduino Pro Mini, ideal for programming microcontrollers that require USB-TTL serial communication. Equipped with LED indicators for power, TXD and RXD, this module allows intuitive monitoring of operating status.
Compatible with a wide range of Windows operating systems, from Windows 98 to Win10, this module is suitable for programming and debugging microcontrollers. The compact design and support for 3.3V and 5V voltages make it versatile for various applications.
Depending on the batch, it may be necessary to downgrade to the 2014 CH340 driver version . Install the driver available in the Download section if you have the latest version installed and are unable to communicate with the board.
Specifications:
Working Voltage: 3.3V/5V
Interface: USB TYPE-C
OS Compatibility: Windows 98, ME, 2000, XP, Server 2003, Vista, Server 2008, Win7, Win8, Win10 (32/64 bit)
Dimensions: Compact, MSOP10
Additional features: LED indicators, support for various wiring modes for microcontrollers
Dimensions mm: 18 x 16mm
Use:
To use the CH340E MSOP10 USB to TTL Serial Converter module, follow these steps:
1. Connect the module to the PC using the USB Type-C data cable.
2. Microcontroller Connection:
For STC microcontrollers: Connect TXD to P3.0 (RX) and RXD to P3.1 (TX) of the microcontroller. Connect the GND of the module to the GND of the microcontroller.
For STM32: Connect TXD to PA10 (RX1) and RXD to PA9 (TX1) of the microcontroller. Connect the GND of the module to the GND of the microcontroller. For discharge, connect BOOT0 to VCC and then to GND after discharge.
3. Software Settings: Install the required driver on the PC and select the appropriate COM port in the development environment.
4. Test and Verify: Test the connection by sending and receiving data through the serial port to confirm the module is functioning properly.