CP2102N-A01-GQFN28R Integrated Circuits (ICs)

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1. Describe

The CP2102N-A01-GQFN28R device is part of the USBXpress family and is designed to eliminate Firmware complexity and reduce development time. These highly integrated USB-to-UART bridge controllers update the RS-232 design to USB to use minimal components and PCB space. CP2102N includes a USB 2.0 full-speed function controller, USB transceiver, oscillator and universal asynchronous receiver/transmitter (UART), and the package size is as small as 3 mm x 3 mm. No other external USB components are required for development. All customization and configuration options can be selected using a simple GUI-based configurator. By eliminating the need for complex firmware and driver development, the CP2102N device achieves a fast USB connection with minimal development effort.

2. Feature

    1. No firmware development required

    2. Simple GUI based configurator

    3. Integrated USB transceiver; no external resistors required

    4. Integrated clock; no external crystal required

    5. USB 2.0 full speed compatible

    6. Data transfer rate up to 3 Mbaud

    7. USB battery charger detection (USB BCS 1.2 specification)

    8. Remote wake-up, used to wake up a suspended host

    9. Low operating current: 9.5 mA

  10. Royalty-free virtual COM port driver

3. Application

    1. POS terminal

    2. USB dongle

    3. Game Controller

    4. Medical equipment

    5. Data Logger

4. Pin configuration

5. Function description

    1. Microcontroller USB to UART data transmission

        - Integrated USB transceiver; no external resistors required

        - Integrated clock; no external crystal required

        - Internal 960 bytes of programmable ROM, used for supplier ID, product ID, serial number, power supply descriptor, version number, And product description string

        - On-chip power-on reset circuit

        - On-chip voltage regulator — 3.3 V output

        - Pin compatible with CP2101/2/9 (QFN28 package)

        - Pin compatible with CP2104 (QFN24 package)

    2. USB function controller

        - Compliant with USB specification 2.0; full speed (12 Mbps)

        - Support USB suspend state through SUSPEND pin

        - USB battery charger detection (USB BCS 1.2 specification)

        - Remote wake-up, used to wake up a suspended host

    3. Universal asynchronous receiver/transmitter (UART)

        - All handshake and modem interface signals

        - Supported data format

        - Data bits — 5, 6, 7, and 8

        - Stop bits — 1, 1.5 and 2

        - Parity, even parity, mark, space, no parity

        - Baud rate: 300 baud to 3 Mbaud

        - 512 byte receive buffer

        - 512 byte transmission buffer

        - Support hardware or Xon/Xoff handshake

    4. Virtual COM port device driver

        - Suitable for existing COM port applications

        - Supports Windows, Mac and Linux

        - Royalty-free distribution license

6. Output Mode

Each pin has two options for the output mode: push-pull and open-drain.By configuring for push-pull operation, a pin operates as a push-pull output. The output voltage is determined by pin’s latch value. This type of output is most often used to connect directly to another device or drive external circuitry like an LED. By configuring for open-drain operation, a pin operates as an open-drain output or input. The output voltage is determined by the pin's latch value. If the pin latch value is 1, the pin is pulled up to VIO (or VDD if the device does not have a VIO pin) through an on-chip pullup resistor. Open-drain outputs are typically used when interfacing to logic at a higher voltage than the VIO pin. These pins can be safely pulled to the higher, external voltage through an external pull-up resistor if VDD meets the 3.3 Absolute Maximum Ratings requirements.