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The SparkFun USB-C Host Shield contains all of the digital logic and analog circuitry necessary to implement a USB peripheral/host controller with your Arduino. This means you could use your Arduino to interface with and control any USB 2.0 compatible device - thumb drives, digital cameras, BT dongles, and much more!

This version updates the USB Type-A connector to a USB-C connector and provides users with the option to power the shield from the 5V or VIN pins. The USB-C female connector also supplies 5V as any normal USB (downward facing) port would.

A four-wire serial interface is used to communicate with the host controller chip, so the shield connects the Arduino's hardware SPI pins (D10-13) to the MAX3421E. All SPI signals are sent through a hex converter to step them down to 3.3V.

MAX3421E USB Controller

  • Provides USB Host and Peripheral Functionality
    • USB 2.0 Specification: 12Mbps (full-speed)
  • Operating Voltage: 3.0 - 3.6V
  • Supply Current:
    • 45mA (max)
    • 8.7mA (idle)
    • 30 - 60µA (suspend)
  • SPI Clock Speed: 0 - 26MHz
  • Operating Temperature: -40 - +85°C

Arduino Shield

  • Arduino R3 Footprint
    • SPI Pins:
      • SCK: D13
      • POCI: D12
      • PICO: D11
      • CS: D10
    • INT: D9
    • GPX: D8
    • RST: D7
  • Reset Button (for Arduino Board)
  • Switches:
    • On/Off
    • Power Input: VIN or 5V
  • USB-C Female Connector
    • Configured for Host Applications
    • Supply Current:
      • Limited by Power Input
      • CC1 and CC2 (56kΩ pull-ups)

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