WVS CP2102 Type-C USB to UART TTL 3.3V 5V Converter Board

The WVS CP2102 Type-C USB to UART Board is a versatile USB to TTL UART communication module designed to provide reliable serial communication between a computer and microcontrollers, development boards and other UART-based electronic systems.

Using the CP2102 USB-to-UART interface, the module converts USB data from a computer into UART serial data and vice versa. It features a modern USB Type-C connector and can provide a selectable 3.3V or 5V VCCIO output, allowing it to interface with a variety of digital electronics.

The module is powered directly through USB and includes an onboard jumper for selecting the required 3.3V or 5V logic/output voltage. Three onboard LED indicators provide convenient visual feedback for TXD, RXD and power, making the module easier to monitor during development and troubleshooting.

The communication pins are conveniently provided on pinheaders, including TXD, RXD, RTS and CTS. Additional pins are accessible through drilled holes, allowing the module to be connected to custom circuits and prototype boards.

The CP2102 supports a wide range of operating systems and offers USB 2.0 full-speed communication, UART baud rates from 300 bps up to 1 Mbps, configurable data formats and hardware or software handshaking. Its compact and flexible design makes it suitable for embedded development, firmware programming, serial debugging and general USB-to-UART communication.

Key Features

• USB to TTL UART communication module
• CP2102 USB-to-UART interface
• USB Type-C connector
• Selectable 3.3V or 5V VCCIO output
• Powered directly from USB
• Onboard voltage-selection jumper
• Integrated SP0503 USB protection device
• TXD LED indicator
• RXD LED indicator
• POWER LED indicator
• TXD, RXD, RTS and CTS available on pinheaders
• Additional pins accessible through drilled holes
• Pin pitch compatible with universal prototype boards
• USB 2.0 compliant full-speed USB interface
• USB data rate up to 12 Mbps
• UART baud rates from 300 bps to 1 Mbps
• Supports 5, 6, 7 and 8 data bits
• Supports 1, 1.5 and 2 stop bits
• Supports odd, even and no parity
• Hardware and X-On/X-Off handshaking
• Integrated 1024-byte EEPROM
• On-chip power-on reset circuit
• On-chip voltage regulator
• No external crystal or external resistors required
• Wide operating temperature range of -40 C to +85 C
• Suitable for microcontrollers and embedded systems

Technical Specifications

• Product Type: USB to TTL UART Communication Module
• USB Interface IC: CP2102
• USB Connector: USB Type-C
• USB Specification: USB 2.0 compliant
• USB Speed: Full-speed, up to 12 Mbps
• UART Baud Rate: 300 bps to 1 Mbps
• VCCIO Output: Selectable 3.3V or 5V
• Power Source: USB
• Protection Device: SP0503
• UART Signals: TXD, RXD, RTS and CTS
• Data Bits: 5, 6, 7 or 8
• Stop Bits: 1, 1.5 or 2
• Parity: Odd, even or none
• Receiving Buffer: 576 bytes
• Transmitting Buffer: 640 bytes
• EEPROM: Integrated 1024-byte EEPROM
• Handshaking: Hardware or X-On/X-Off
• Indicators: TXD, RXD and POWER LEDs
• Operating Temperature: -40 C to +85 C
• Mounting/Connection: Pinheaders and drilled-hole connections
• Pin Pitch: Compatible with universal prototype boards

USB to UART Communication

The CP2102 provides a convenient bridge between a computer's USB interface and a UART-based electronic system. This allows developers to communicate with microcontrollers and other serial devices using a computer's USB port.

Typical applications include:

• Serial data communication
• Microcontroller programming
• Firmware development
• Serial console access
• Debugging embedded systems
• Development board communication
• Configuration of UART-based devices
• PC-to-MCU communication

UART Interface

The module provides several UART signals for flexible serial communication:

• GND: Connects to the ground of the target system.
• TXD: Connects to the MCU RX input.
• RXD: Connects to the MCU TX output.
• RTS: Connects to the MCU CTS input.
• CTS: Connects to the MCU RTS output.

For standard UART communication, TXD and RXD are typically connected to the corresponding receive and transmit pins of the target device, with a common ground connection.

The RTS and CTS connections provide hardware flow-control functionality when required by the application.

3.3V and 5V Selection

The board supports 3.3V or 5V VCCIO output. The module is powered from the USB connection, while the onboard jumper is used to select the required voltage.

Before connecting the module to a target circuit, select the appropriate voltage according to the target device's electrical requirements. Using an incorrect voltage may cause damage to connected electronics.

LED Indicators

Three onboard LEDs provide convenient status information:

• TXD LED: Indicates transmit activity
• RXD LED: Indicates receive activity
• POWER LED: Indicates that the module is powered

These indicators can be particularly useful during serial communication testing and debugging.

Operating System Support

The module is designed to work with a range of operating systems and driver environments, including:

• Windows
• Windows 7
• Windows 8
• Windows 10
• Windows 11
• Windows XP
• Windows 2000
• Windows Vista
• Windows Server 2003
• Windows CE
• macOS
• Linux
• Android

Driver support and compatibility may depend on the operating system version and the software being used.

CP2102 Features

The integrated CP2102 provides several functions designed to simplify USB-to-UART implementation. It includes an onboard power-on reset circuit and voltage regulator, as well as integrated EEPROM.

The USB interface is USB 2.0 full-speed compliant, while the UART interface supports configurable data formats and baud rates up to 1 Mbps.

No external crystal or external resistors are required for the USB-to-UART interface operation.

Physical Connections

The board provides pinheader connections for the main UART signals, while additional connection points are available through drilled holes. This makes it possible to connect the module to breadboards, prototype boards and custom electronic circuits.

The drilled-hole pin connections use a pitch compatible with universal prototype boards, providing additional flexibility during hardware development.

Applications

The WVS CP2102 Type-C USB to UART Board is suitable for:

• Microcontroller development
• ESP32 development
• Arduino projects
• Embedded system development
• UART serial communication
• Firmware programming
• Serial debugging
• Development board programming
• Electronics prototyping
• USB-to-TTL communication
• Serial console applications
• Industrial control development
• Custom embedded hardware
• Computer-to-MCU communication
• Testing and diagnostics
• Important Notes
• Select the correct 3.3V or 5V VCCIO setting before connecting the module to your target circuit.
• TXD and RXD should be connected according to the required signal direction.
• A common GND connection is required between the module and the target device.
• The connected target device must support the selected voltage level.
• USB cable, microcontroller, development board and other external accessories are not included unless specifically stated in the product package.

What's in the box
1 x WVS CP2102 Type-C USB to UART TTL Communication Board