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USB 2.0 Type-A to TTL UART Serial Converter Module with CH340G Chip, 3.3V/5V Switchable STC Programmer, Replacement for PL2303
- Equipped with reliable CH340G main chip, fully compatible substitute for PL2303 serial adapter, supports multi-system drivers
- Jumper-switchable 3.3V / 5V logic voltage, matches STC MCUs, Arduino, sensors and various serial modules
- Standard USB2.0 interface, stable UART TTL communication, ideal for firmware downloading and hardware debugging
- Clearly labeled VCC/TXD/RXD/GND pins with power indicator LED, intuitive wiring and working status observation
- Plug-and-play after driver installation, works with Windows, Linux, macOS; widely used for STC burning, circuit debugging and serial equipment communication
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This USB to TTL serial converter module adopts mature CH340G control chip, which can perfectly replace traditional PL2303 download boards. It converts computer USB signals into standard TTL UART serial signals, an essential tool for electronic makers, maintenance technicians and MCU development.
The jumper cap allows free switching between 3.3V and 5V output voltage, adapting to STC single-chip microcomputers, Arduino control boards, serial Bluetooth/WiFi modules and other hardware with different voltage tolerance. Clearly printed pin labels effectively avoid wiring errors during operation.
USB 2.0 transmission ensures stable upload and download of program data without packet loss, suitable for STC chip program burning, industrial equipment serial debugging, sensor data capture and device parameter configuration. The onboard power LED quickly reminds users of normal power supply status.
It provides universal drivers for Windows, Linux and macOS operating systems with no complex setup procedures. Compact PCB design saves desktop space, and reserved mounting holes support fixed installation inside equipment casings.
Widely applied to STC firmware downloading, circuit maintenance debugging, smart hardware development, IoT module testing and other electronic development scenarios.
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- Return for replacement within: non-replaceable
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