CP2102 USB 2.0 to TTL UART Serial Converter Module

The USB to TTL Converter Module is a compact and reliable serial communication interface designed for developers, makers, and embedded system engineers. It converts USB signals from a computer into TTL-level UART signals, enabling direct communication with glyph, microcontrollers, sensors, and embedded devices. Documentation for CP2102 USB to UART This module is based on USB-to-serial ICs CP2102 and supports standard UART communication. It is widely used for programming, debugging, and serial monitoring of development boards like Arduino, Glyph STM32, and other TTL-based devices. Supported Interfaces: USB 2.0 TTL UART (Serial Communication) Pin Definition: 5V / 3.3V – Power Output (module dependent) TX – UART Transmit (TTL) RX – UART Receive (TTL) GND – Ground DTR / RTS / CTS / DSR – Hardware flow control pins Applications Microcontroller programming USB to UART serial communication ESP8266 / ESP32 flashing and debugging Arduino serial monitoring Embedded system development Firmware upload and testing Features USB to TTL UART signal conversion Supports 3.3V and 5V logic levels Plug-and-play USB interface Onboard USB-to-serial controller Compact and lightweight PCB design Ideal for debugging and prototyping