Datasheet

MCP2221 Breakout Module User’s Guide
DS50002282A-page 14  2014 Microchip Technology Inc.
FIGURE 2-1: BREAKOUT MODULE LAYOUT
2.3 BOARD OPERATION
The MCP2221 will be detected by a Windows-based PC host as a composite device.
The accompanying software can be used to exercise the board’s features and also
provides a reference point for users who want to design their own applications based
on the MCP2221 device.
2.3.1 MCP2221 Breakout Module Operation
The MCP2221 Breakout Module can be used together with UART-based and/or
I
2
C/SMBus systems. The breakout board eases the USB support addition.
The board has the following features:
• UART signals (Tx, Rx)
• Four GP signals that can be configured for:
- GPIO functionality (digital input or output pins; please see the MCP2221 Data
Sheet for the exact GP pin options)
- Dedicated function pins (signal important system states, such as USB
Configured, USB Suspend)
- Alternate function pins (clock output, analog inputs or outputs)