CP2102 USB to TTL UART Converter (3.3V / 5V)

The CP2102 USB to TTL Serial Converter Module is a reliable and easy-to-use solution for connecting microcontrollers to a computer through USB. It is built around the CP2102 USB-to-UART IC, which converts USB signals into TTL-level serial communication.

Most microcontrollers such as Arduino, Raspberry Pi, PIC, ESP modules, GPS, and GSM modules communicate using UART (TX/RX) protocol at TTL logic levels (3.3V or 5V). Since computers use USB communication (D+ and D- lines), this module acts as a bridge between USB and UART, allowing smooth data transfer, debugging, and programming.

Simply plug the USB Type-A male connector into your PC and connect the TXD, RXD, GND, and power pins to your controller. It supports a wide range of baud rates and works seamlessly with Windows, macOS, and Linux operating systems.

This module is ideal for:

• Programming Arduino Nano / Pro Mini

• Serial communication and debugging

• Interfacing GPS and GSM modules using AT commands

• Embedded system development and testing

Key Features

• Based on stable and reliable CP2102 chipset

• USB 2.0 compliant, Full-Speed (12 Mbps)

• Supports 3.3V and 5V TTL logic levels

• Wide baud rate support: 300 bps to 1.5 Mbps

• Supports hardware and X-On/X-Off flow control

• Plug-and-play USB Type-A male connector

Pin Configuration

5-Pin TTL Interface:

• TXD

• RXD

• 3.3V

• 5V

• GND

Specifications

• Chipset: CP2102

• USB Standard: USB 2.0 Full-Speed

• Interface: USB to UART (TTL)

• Operating Voltage: 3.3V / 5V

• Baud Rate: 300 bps – 1.5 Mbps

• OS Support: Windows, macOS, Linux