component
MCP2221A USB Bridge
Public Made by Adomby adom
USB-2.0 to UART and I2C bridge with GPIO, ADC, and DAC, appears as a CDC + HID composite device.
← Commit history
page.json+157−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "mcp2221a",+ "title": "MCP2221A USB Bridge",+ "brief": "USB-2.0 to UART and I2C bridge with GPIO, ADC, and DAC, appears as a CDC + HID composite device.", "version": "0.1.0",- "type": "component",- "description": "USB-2.0 to UART and I2C bridge with GPIO, ADC, and DAC, appears as a CDC + HID composite device.",+ "license": "CC-BY-SA-4.0", "tags": [ "usb", "uart",@@ -12,6 +15,157 @@ "microchip", "soic-14" ],+ "component": {+ "mpn": "MCP2221A",+ "manufacturer": "Microchip",+ "package": "SOIC-14",+ "pin_count": 14,+ "category": "Interface",+ "subcategory": "USB Bridge",+ "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2221A-Data-Sheet-DS20005565D.pdf",+ "parts": {+ "symbol": "mcp2221a.kicad_sym",+ "footprint": "mcp2221a.kicad_mod",+ "model_3d": "mcp2221a.glb"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "VDD",+ "type": "power_in",+ "description": "Positive supply input, 3.0V to 5.5V operating range. Decouple with a local ceramic capacitor."+ },+ {+ "number": "2",+ "name": "GP0",+ "type": "bidirectional",+ "description": "General purpose I/O. Alternate functions: SSPND (OUT) signals USB Suspend state; LED_URx (OUT, factory default) indicates UART Rx activity."+ },+ {+ "number": "3",+ "name": "GP1",+ "type": "bidirectional",+ "description": "General purpose I/O. Alternate functions: CLKR clock reference output (12 MHz or configurable divide), ADC1 input, LED_UTx (factory default) UART Tx activity indicator, and IOC external interrupt edge detector."+ },+ {+ "number": "4",+ "name": "RST",+ "type": "input",+ "description": "Active-low reset input with internal pull-up. Drive low to reset the device."+ },+ {+ "number": "5",+ "name": "URx",+ "type": "input",+ "description": "UART receive data input. Accepts data from the external UART peer to be forwarded to the USB CDC interface."+ },+ {+ "number": "6",+ "name": "UTx",+ "type": "output",+ "description": "UART transmit data output. Drives data received over the USB CDC interface to the external UART peer."+ },+ {+ "number": "7",+ "name": "GP2",+ "type": "bidirectional",+ "description": "General purpose I/O. Alternate functions: USBCFG (OUT, factory default) indicates USB enumeration complete; ADC2 analog input; DAC1 analog output."+ },+ {+ "number": "8",+ "name": "GP3",+ "type": "bidirectional",+ "description": "General purpose I/O. Alternate functions: LED_I2C (OUT, factory default) USB/I2C traffic indicator; ADC3 analog input; DAC2 analog output."+ },+ {+ "number": "9",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C serial data line (open-drain). Requires external pull-up. MCP2221A operates as I2C host up to 400 kHz."+ },+ {+ "number": "10",+ "name": "SCL",+ "type": "bidirectional",+ "description": "I2C serial clock line (open-drain). Requires external pull-up. Driven by the MCP2221A as I2C host, up to 400 kHz."+ },+ {+ "number": "11",+ "name": "VUSB",+ "type": "power_out",+ "description": "USB internal 3.3V regulator output. Must be locally bypassed with a high-quality ceramic capacitor. Do not use to power external loads."+ },+ {+ "number": "12",+ "name": "D-",+ "type": "bidirectional",+ "description": "USB differential data line, negative. Connect to the D- line of the USB connector. Termination is integrated."+ },+ {+ "number": "13",+ "name": "D+",+ "type": "bidirectional",+ "description": "USB differential data line, positive. Connect to the D+ line of the USB connector. Termination is integrated."+ },+ {+ "number": "14",+ "name": "VSS",+ "type": "power_in",+ "description": "Device ground reference."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2221A-Data-Sheet-DS20005565D.pdf",+ "pages": 78,+ "sha256": "ade28a45a0314e2f",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 14,+ "described": 14,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Type": "USB-to-UART + USB-to-I2C bridge",+ "USB": "Full-speed USB 2.0 (12 Mb/s), CDC + HID composite",+ "UART": "Up to 460.8 kbaud",+ "I2C": "Master, up to 400 kHz",+ "GPIO": "4 pins with ADC (10-bit) and DAC (5-bit) functions",+ "Supply voltage": "3.0 V to 5.5 V",+ "Operating temperature": "-40 C to 85 C"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "USB to UART",+ "USB to I2C",+ "USB serial bridge",+ "add USB to a project",+ "USB GPIO"+ ],+ "discovery_pitch": "Add USB to a design and get a UART, an I2C master, and a few GPIO/ADC/DAC pins, no custom driver needed.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -27,10 +181,5 @@ "docs/mcp2221a-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }