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    CP2103-GM

    The CP2103 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating
    RS-232/RS-485 designs to USB using a minimum of components and PCB space. The CP2103 includes a USB
    2.0 full-speed function controller, USB transceiver, oscillator, EEPROM, and asynchronous serial data bus (UART)
    with full modem control signals in a compact 5×5 mm QFN-28 package (sometimes called “MLF” or “MLP”). No
    other external USB components are required.
    The on-chip EEPROM may be used to customize the USB Vendor ID, Product ID, Product Description String,
    Power Descriptor, Device Release Number, and Device Serial Number as desired for OEM applications. The
    EEPROM is programmed on-board via the USB, allowing the programming step to be easily integrated into the
    product manufacturing and testing process.
    Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Laboratories allow a CP2103-based
    product to appear as a COM port to PC applications. The CP2103 UART interface implements all RS-232/RS-485
    signals, including control and handshaking signals; so, existing system firmware does not need to be modified. The
    device also features up to four GPIO signals that can be user-defined for status and control information. Support
    for I/O interface voltages down to 1.8 V is provided via a VIO pin. In many existing RS-232 designs, all that is
    required to update the design from RS-232 to USB is to replace the RS-232 level-translator with the CP2103.
    Direct access driver support is available through the Silicon Laboratories USBXpress driver set. Go to
    www.silabs.com for the latest application notes and product support information for CP2103.
    An evaluation kit for the CP2103 (Part Number: CP2103EK) is available. It includes a CP2103-based USB-toUART/RS-232 evaluation board, a complete set of VCP device drivers, USB and RS-232 cables, and complete
    documentation. Contact a Silicon Labs sales representatives or visit www.silabs.com to order the CP2103
    Evaluation Kit.

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      SPECIFICATION

      Single-Chip USB to UART Data Transfer
      Integrated USB transceiver; no external resistors
      required
      Integrated clock; no external crystal required
      Integrated 1024-Byte EEPROM for vendor ID, product
      ID, serial number, power descriptor, release number,
      and product description strings
      On-chip power-on reset circuit
      On-chip voltage regulator: 3.3 V output
      USB Function Controller
      USB Specification 2.0 compliant; full-speed (12 Mbps)
      USB suspend states supported via SUSPEND pins
      Asynchronous Serial Data BUS (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, mark, space, no parity
      Baud rates: 300 bps to 1 Mbps
      576 Byte receive buffer; 640 byte transmit buffer
      Hardware or X-On/X-Off handshaking supported
      Four GPIO signals for status and control
      Configurable I/O (1.8 V to VDD) using VIO pin
      Configurable I/O (VDD to 5 V) using external pull-up
      RS-485 mode with bus transceiver control
      Virtual COM Port Device Drivers
      Works with Existing COM Port PC Applications
      Royalty-Free Distribution License
      Windows 7®/Vista®/XP®/Server 2003®/2000®
      Mac® OS-X
      Linux
      USBXpress™ Direct Driver Support
      Royalty-Free Distribution License
      Windows 7/Vista/XP/Server 2003/2000
      Windows CE 6.0, 5.0, and 4.2
      Example Applications
      Upgrade of RS-232 legacy devices to USB
      Upgrade of RS-485 legacy devices to USB
      Cellular phone USB interface cable
      PDA USB interface cable
      USB to RS-232 serial adapter
      Supply Voltage
      Self-powered: 3.0 to 3.6 V
      USB bus powered: 4.0 to 5.25 V
      I/O voltage: 1.8 V to VDD
      Package
      Lead free 28-pin QFN (5×5 mm)
      Ordering Part Number
      CP2103-GM
      Temperature Range: –40 to +85 °C