CP2102 Module USB To TTL USB To Serial Port Module

CP2102 USB to TTL Serial Port Module

Product Description:

The CP2102 USB to TTL Module is a highly reliable USB-to-serial interface adapter that enables communication between USB and TTL-level devices. It is commonly used for serial data transmission, such as programming microcontrollers (including STC downloader) and interfacing with various embedded systems. The CP2102 module creates a virtual serial port on your computer after installing the necessary drivers, making it an essential tool for anyone working with UART communications and TTL level systems.

Key Features:

• Main Chip: Uses the CP2102 USB to TTL chip, providing stable and efficient serial communication.
• USB Powered: The module is powered through the USB connection, making it a convenient, portable solution.
• Output Interfaces: Provides 3.3V (up to 40mA), 5V, GND, TX, and RX for easy integration with various circuits.
• Baud Rate Support: Supports baud rates from 300bps to 1Mbps, allowing flexible data transfer speeds.
• Signal Pin Level: The module uses TTL levels, with +5V for logic “1” and 0V for logic “0”, ensuring compatibility with most logic circuits.
• Communication Formats: Supports various communication formats, including:
  • 5, 6, 7, 8 data bits
  • 1, 1.5, 2 stop bits
  • Odd, even, mark, space, and none parity
• Status Indicators: The module features an on-board status indicator and a transceiver indicator to show power and communication status.
  • Status Indicator: Lights up when the driver is installed correctly.
  • Transceiver Indicator: Flashes during communication, with brightness decreasing at higher baud rates.
• Supported Operating Systems: Compatible with Windows (Vista, XP, Server 2003/2000), Mac OS X, and Linux.
• Self-Testing Feature: The module supports loopback testing, where the TXD pin is connected to the RXD pin to test if the transmission and reception are working correctly, useful for troubleshooting.

Applications:

• Microcontroller Programming: Ideal for programming microcontrollers like STC or similar devices that require serial communication for downloads.
• UART Communication: Used to establish communication between a USB device and a TTL-level system, such as sensors, controllers, or embedded devices.
• Embedded System Debugging: Assists in debugging serial communication between a computer and embedded systems.
• Serial Data Interface: Used in various embedded projects where TTL to USB conversion is required.

Important Notes:

• Self-Test: You can easily test the functionality of the module by connecting TXD and RXD to check if both transmitting and receiving are working correctly.
• Connection Reminder: During normal communication, ensure TXD is connected to the RXD of another device. This is crucial for correct data transmission.

Technical Specifications:

• Main Chip: CP2102
• Voltage Output: 3.3V (<40mA), 5V
• Interface Pins: VCC, GND, TX, RX
• Baud Rate Range: 300bps to 1Mbps
• Supported Formats: 5-8 data bits, 1-2 stop bits, various parity settings (odd, even, mark, space, none)
• Operating Systems Supported: Windows (Vista, XP, Server 2003/2000), Mac OS X, Linux
• USB Connector: Male, for direct connection to a USB port.