Description
Product Overview
The CP2102 USB to TTL UART Serial Converter Module is a compact, high-performance serial communication adapter designed to bridge the gap between a computer’s USB port and a microcontroller’s UART interface. Based on the Silicon Labs CP2102 bridge controller, this module creates a virtual COM port on your computer, allowing you to program, debug, and communicate with embedded systems that lack native USB connectivity .
Featuring a 6-pin interface with clearly labeled silkscreen markings, this converter includes essential pins: 3.3V, 5V, TXD, RXD, DTR, and GND. The DTR (Data Terminal Ready) line supports auto-reset functionality, making it particularly convenient for programming Arduino Pro Mini, ESP8266, ESP32, and other development boards that require automatic reset during firmware upload .
Built with reliability in mind, the module incorporates an onboard self-recovery fuse that protects both your computer’s USB port and the connected target device in the event of an accidental short circuit or overcurrent condition. The TX and RX status LEDs provide real-time visual feedback of data transmission activity, simplifying debugging and troubleshooting.
With support for baud rates up to 1.5 Mbps and broad driver compatibility across Windows, macOS, and Linux, this CP2102-based converter is a trusted choice for electronics hobbyists, educators, and professionals working with microcontrollers and embedded systems .
Key Features
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Genuine CP2102 Chipset: Based on the high-performance Silicon Labs CP2102 USB 2.0 to UART bridge controller, known for excellent stability and broad compatibility
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6-Pin Interface with Auto-Reset: Standard 6-pin 2.54mm pitch pinout (3V3, 5V, TXD, RXD, DTR, GND) featuring DTR line for automatic reset of Arduino-compatible boards during upload
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Dual Voltage Output: Provides both 3.3V (up to 50mA) and 5V (up to 500mA) power outputs to supply your target device
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Integrated Self-Recovery Fuse: Onboard resettable fuse protects your computer’s USB port and the module from short circuits and overcurrent conditions
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High-Speed Communication: Supports baud rates from 300 bps up to 1.5 Mbps, suitable for high-speed data transmission and programming
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Visual Status LEDs: Three onboard LEDs provide clear status indication: POWER (red), TXD (green), and RXD (blue/red) for real-time activity monitoring
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USB 2.0 Compliant: Meets USB 2.0 full-speed (12 Mbps) specifications, ensuring compatibility with modern computers
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Broad Driver Support: Works with official Silicon Labs VCP drivers on Windows, macOS, and Linux – plug-and-play on most modern systems
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Compact Size: Small PCB footprint (approx. 42mm × 15mm) allows easy integration into projects and enclosures
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Chipset | Silicon Labs CP2102 |
| Interface | USB 2.0 to TTL UART (Full Speed, 12 Mbps) |
| Operating Voltage | 5V (via USB) |
| Voltage Outputs | 3.3V (up to 50mA) & 5V (up to 500mA) |
| Baud Rate Range | 300 bps – 1.5 Mbps |
| Supported Protocols | TTL (3.3V/5V logic), UART |
| Pin Header | Standard 6-pin 2.54mm pitch (3V3, 5V, TXD, RXD, DTR, GND) |
| Buffer Size | 640 bytes Transmit / 640 bytes Receive |
| Protection | Self-recovery fuse (overcurrent and short-circuit) |
| Operating Temperature | -40°C to +85°C |
| Dimensions (L×W) | 42mm × 15mm |
| Weight | Approx. 4g |
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