Product Detail
The USB to TTL CH340G Converter Module is a compact and reliable interface board designed to convert USB signals to TTL serial communication.
It’s perfect for uploading code, debugging microcontrollers, or upgrading firmware on devices like routers, GPS units, and STC microcontrollers.
Equipped with both 3.3V and 5V output options, this module ensures compatibility with a wide range of logic levels.
The CH340G chip provides high-speed and stable data transmission, making it a great choice for developers, hobbyists, and engineers who need a dependable USB-to-serial interface.
Features
- Built-in CH340G USB to TTL conversion chip
- Dual voltage output: 3.3V / 5V
- Ideal for STC, Arduino, and embedded projects
- Stable data transfer with wide OS compatibility
- Onboard cold-start reset button
- Compact, lightweight, and easy to use
- Works with USB1.1 / USB2.0 / USB3.0 interfaces
Applications
- STC microcontroller programming
- Arduino PRO serial communication
- GPS and router firmware upgrade
- RS232, RS485, RS422 communication projects
- IRDA SIR infrared communication testing
- USB-to-serial data logging and debugging
Technical Specifications
| Specification | Details |
|---|---|
| Chip Model | CH340G |
| Operating Voltage | 3.3V / 5V |
| Operating Temperature | -30°C ~ +85°C |
| Compatible System | Windows 98/ME/2000/XP/Vista/7/8/10, Mac, Linux |
| Interface Type | USB to TTL Serial |
| Output Interface | TTL (3.3V & 5V selectable) |
| Communication Support | RS232 / RS485 / RS422 / IRDA SIR |
| Color | Red / Blue PCB (varies by batch) |
| Brand | Generic |
| Model | CH340G Module |
⚠️ Please allow 3% measuring deviation.
Package
-
1 × USB to TTL CH340G Upgrade Board
Documentations
What is USB to TTL CH340G Module?
The CH340G USB to TTL module is a small adapter board that converts USB signals into serial (TTL) signals.
It allows communication between your computer and microcontrollers, making it essential for uploading code, debugging, or upgrading firmware.
USB to TTL CH340G Converter Module Pinout
How to Use
- Connect the module to your PC via USB.
- Install the CH340G driver if required.
- Connect the TX, RX, and GND pins to your microcontroller.
- Select the correct COM port in your programming software (like Arduino IDE or STC ISP).
- Start uploading or communicating with your target board.
- You can use the onboard reset button for cold starts during programming.
USB to TTL CH340G Converter Module Review Video
Applications
- STC Microcontroller Downloads
- Arduino Pro Serial Interface
- Firmware Upgrade for Routers, GPS
- TTL to USB communication bridge
- Debugging embedded systems
FAQ
- 1. Does this module work with Arduino boards?
✅ Yes, it supports Arduino Pro, Mini, and other TTL-based boards. - 2. Do I need to install drivers?
✅ Most systems detect it automatically, but Windows users may install CH340G drivers manually. - 3. Can it provide both 3.3V and 5V outputs?
✅ Yes, it can supply power at both voltage levels. - 4. Is it compatible with Linux or Mac OS?
✅ Absolutely! It supports Windows, Mac, and Linux operating systems. - 5. Can I use it for STC microcontrollers?
✅ Yes, it’s specifically designed for STC microcontroller programming and firmware downloads.
Reference Links
Specifications
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- Model SKU140
- Weight 500 g
- Dimensions 35 × 30 × 7 cm
- Color Black, Pink, Red, White
- Size 10 X 20
Reviews
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