CH340G USB to TTL Serial Module – STC MCU Programmer Board
CH340G USB to TTL Serial Module – STC MCU Programmer Board
CH340G USB to TTL Serial Converter Module
The CH340G USB to TTL Serial Converter Module is a compact, reliable adapter board designed for developers, hobbyists, and engineers who need a stable USB-to-serial interface for microcontroller programming and debugging. Built around the CH340E/CH340G chip, this module offers a rock-solid alternative to PL2303-based adapters, delivering consistent driver support across Windows, macOS, and Linux.
Key Features
- CH340G/CH340E Chip: Industry-trusted USB-to-serial IC with broad OS driver compatibility and stable communication.
- USB to TTL Conversion: Converts standard USB signals to 3.3V/5V TTL UART serial signals, ideal for STC microcontrollers, Arduino boards, and other MCU platforms.
- SMD Package Design: Surface-mount construction keeps the board compact and lightweight — perfect for tight workspaces and portable setups.
- PL2303 Alternative: Drop-in functional replacement for PL2303 USB-to-serial adapters, with improved driver reliability on modern operating systems.
- Firmware Download Support: Supports direct firmware flashing and serial debugging for STC microcontroller boards and similar MCUs.
- Plug-and-Play Convenience: Simple USB connection with no external power supply required — powered directly from the USB port.
- LED Indicators: On-board TX/RX LEDs for real-time visual confirmation of data transmission activity.
- Breadboard & Project Compatible: Standard pin header spacing makes it easy to integrate into breadboards and development setups.
Specifications
- Chip: CH340E / CH340G
- Interface: USB to TTL (UART)
- Package Type: SMD
- Condition: New
- Country of Origin: Made in Mainland China
What's in the Box
- 1 × CH340G USB to TTL Serial Converter Module
Who Is This For?
This module is ideal for embedded systems developers, electronics students, Arduino enthusiasts, and anyone working with STC microcontrollers or other UART-based devices. Whether you're uploading firmware, monitoring serial output, or debugging a microcontroller project, the CH340G module delivers the dependable performance you need.
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Frequently Asked Questions
Q: What is the CH340G USB to TTL module used for?
A: The CH340G USB to TTL serial converter module is primarily used for programming and debugging microcontrollers (such as STC MCUs and Arduino boards) via a computer's USB port. It converts USB signals to TTL-level UART serial signals so your PC can communicate directly with microcontroller hardware.
Q: Is the CH340G a reliable replacement for PL2303 adapters?
A: Yes. The CH340G chip is widely regarded as a more reliable alternative to PL2303-based adapters, especially on modern versions of Windows, macOS, and Linux. Drivers are readily available and consistently supported, reducing compatibility issues common with older PL2303 devices.
Q: What operating systems are supported?
A: The CH340G module supports Windows (XP through Windows 11), macOS, and Linux. Drivers can be downloaded from the chip manufacturer's website. On many Linux distributions, the driver is included in the kernel by default.
Q: What voltage levels does this module support?
A: The CH340G module supports both 3.3V and 5V TTL logic levels, making it compatible with a wide range of microcontroller boards and development platforms.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.