CP2102 USB UART Board (USB-A)

This small board makes communication between a computer’s USB port and UART devices a piece of cake! It uses the CP2102 chip, a single-chip USB-to-UART bridge, which eliminates the need for external components like resistors. It has a 576-byte receive buffer and a 640-byte transmit buffer for data transmission.

It is compatible with many operating systems, including Windows (from Windows 2000 to Windows 11), Mac OS-X/OS-9, Linux 2.40 or higher and Android.

This version of the module includes a USB-A connection and comes with pin headers and a jumper wire.

We also stock a USB-C and Micro-USB version.

Features

• Supports Mac, Linux, Android, WinCE, Windows 7/8/8.1/10/11
• Voltage output support: 5V or 3.3V
• Integrated USB protection device: SP0503
• 3 LEDs: TXD LED, RXD LED, POWER LED
• Pins accessible on pin headers: TXD, RXD, RTS, CTS
• Other pins are accessible on drilled holes (separate pin headers are provided)

Specifications

CP2102 Specs

• Single-Chip USB to UART Data Transfer
  • No external resistors required, no external crystal required
  • On-chip power-on reset circuit and voltage regulator
  • Integrated 1024-byte EEPROM
• USB Function Controller
  • USB Specification 2.0 compliant; full-speed (12 Mbps)
  • USB suspend states supported via SUSPEND pins
• UART
  • All handshaking and modem interface signals
  • Data formats supported:
    • Data bits: 5, 6, 7, and 8
    • Stop bits: 1, 1.5, and 2
    • Parity: odd, even, no parity
  • Baud rates: 300 bps to 1 Mbits
  • 576 Byte receive buffer; 640 byte transmit buffer
  • Hardware or X-On/X-Off handshaking supported
  • Event character support
• Virtual COM Port Device Drivers
  • Windows 8/7/Vista/Server 2003/XP/2000
  • MAC OS-X/OS-9
  • Linux 2.40 or higher
• USBXpress Direct Driver Support
  • Windows 7/Vista/Server 2003/XP/2000
  • Windows CE
• Temperature Range
  • –40 to +85 °C

Resources

• Product Wiki
• Driver File

Pinout

MCU

• VCCIO: 3.3V or 5V output (the module is powered from USB, the jumper should be shorted to 3.3V or 5V)
• GND: connects to GND
• TXD: connects to MCU.RX (signal direction: MCU.RX << CP2102 << PC.TX)
• RXD: connects to MCU.TX (signal direction: MCU.TX >> CP2102 >> PC.RX)
• RTS: connects to MCU.CTS (signal direction: MCU.CTS << CP2102 << PC.RTS)
• CTS: connects to MCU.RTS (signal direction: MCU.RTS >> CP2102 >> PC.CTS)

Package Contents

• 1x CP2102 USB UART Board (USB-A)
• 2x 4-pin male pinheader & 4-pin female pinheader
• 1x 6-pin custom connector jumper wire