MCP2221-I/SL Datasheet PDF - Microchip

●The MCP2221-I/SL is an USB 2.0 to UART/I²C™ Protocol Converter with GPIO enables USB connectivity in applications that have an UART and I²C interfaces. The device reduces external components by integrating the USB termination resistors and the oscillator needed for USB operation. The MCP2221 also has four GP-pins providing miscellaneous functionalities (GPIO, USBCFG, SSPND, clock output, ADC, DAC, interrupt detector). The MCP2221 enumerates as a composite USB device after POR. The device enumerates as both a human interface device (HID) for I²C, GPIO control and as CDC for the USB-to-UART converter.

● Supports full-speed USB (12Mbps)

● Implements USB protocol composite device

● 128-byte buffer to handle data throughput at any UART baud rate

● Human interface device (HID) for both I²C™ communication and control

● USB 2.0 compliant

● Human interface device (HID) for both I²C™ communication and control

● I²C/SMBus terminal

● Communications device class (CDC) for the USB-to-UART option

● Device runs as an I²C master

● Data to write/read on the I²C bus is conveyed by the USB interface

● Four general-purpose input/output pins

● All GP pins can be assigned to other functionalities

● UART activity LED outputs (UTX and URX)

● SSPND output pin

● USBCFG output pin (indicates when the enumeration has completed)

● Three ADC inputs

● One DAC with two possible output options

● 12MHz or other configurable values clock reference output

● External interrupt edge detection

●ESD sensitive device, take proper precaution while handling the device.