CP2102 USB to TTL

Working

This is a USB2.0 to TTL UART Converter module which is based on CP2102 Bridge by SiLabs. This module can be used with Laptop’s which don’t have standard serial ports. This module creates a virtual COM port using USB on your computer which can support various standard Baud Rates for serial communication. You just need to install the driver using a setup file that automatically installs correct driver files for Windows XP/Vista/ 7. After driver installation, plug the module into any USB port of your PC. Finally, a new COM port is made available to the PC. The feature which makes it more convenient is the TTL level data i/o. So you don’t need to make a RS232 to TTL converter using chips like MAX232. The Rx and Tx pin can be connected directly to the MCUs pins (assuming 5v i/o).

Pinouts

This module has 6 pin breakout which includes

• TXD = Transmit Output Connect to Receive Pin(RXD) of Microcontroller. This pin is the TX pin of CP2102 on board.
• RXD = Receive Input  Connect to Transmit Pin(TXD) of Microcontroller. This pin is the RX pin of CP2102 on board.
• GND = Should be common to microcontroller ground.
• 3V3 = Optional output to power external circuit up to 50mA.
• 5V = Optional output to power external circuit upto 500mA
• DTR/RST = Optional output pin to reset external microcontrollers like Arduino.

Specifications

• Built-in USB to RS232 Transfer chip.
• Designed to be used for USB to TTL electronic projects.
• TTL interface output, easy to connect to your MCU.
• Status LED.
• Dual 3.3V and 5V Power output, work with 3.3v and 5v target device.
• Compact design.
• Dimension: 42 mm x 17 mm