# MCP2221a Framework module ## Description A Framework laptop expansion module using the mcp2221a USB to I²C/UART bridge ic ## Project Details - **Owner:** tyler-s - **Created:** 7/31/2024 - **Last Updated:** 8/2/2024 - **Visibility:** Public - **Copies:** 2 ## Key Components ### CC_RES — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Part Type: Resistor - Resistance: 5.1kΩ - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### IC1 — [MCP2221AT-I/ST](https://www.flux.ai/vasyl/mcp2221at-ist~mi7.md) - Manufacturer Name: Microchip Technology - Part Type: Integrated Circuit - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/20005565C.pdf - Manufacturer Part Number: MCP2221AT-I/ST **Pins:** - ~RST [pin 4] - D- [pin 12] - D+ [pin 13] - GP0 [pin 2] - GP1 [pin 3] - GP2 [pin 7] - GP3 [pin 8] - SCL [pin 10] - SDA [pin 9] - URx [pin 5] - UTx [pin 6] - VDD [pin 1] - VSS [pin 14] - VUSB [pin 11] ### J1 — [QWIIC I2C JST Connector](https://www.flux.ai/vasy_skral/qwiic-i2c-jst-connector~d55.md) - Manufacturer Part Number: SM04B-SRSS-TB - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/JST%20PDFs/SR%20Connector.pdf - Manufacturer Name: JST Sales America Inc. - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J3 — [BG300-06-A-L-A](https://www.flux.ai/tyler-s/bg300-06-a-l-a~pq.md) - Purchase Url: https://www.digikey.com/en/products/detail/gct/BG300-06-A-L-A/9859597 - Manufacturer Part Number: BG300-06-A-L-A **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J4 — [BG300-02-A-L-A](https://www.flux.ai/tyler-s/bg300-02-a-l-a~bu.md) - Manufacturer Part Number: BG300-02-A-L-A **Pins:** - 1 [pin 1] - 2 [pin 2] ### J5 — [105444-0001](https://www.flux.ai/tyler-s/105444-0001~ci.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.literature.molex.com/SQLImages/kelmscott/Molex/PDF_Images/987651-4081.PDF - Manufacturer Name: Molex - Part Type: Connector - Manufacturer Part Number: 1054440001 **Pins:** - CC [pin A5] - D- [pin A7] - D+ [pin A6] - EXP [pin E2] - EXP [pin E1] - GND [pin A12] - GND [pin A1] - GND [pin B1] - GND [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS [pin B9] - VBUS [pin A4] - VBUS [pin A9] - VBUS [pin B4] - VCONN [pin B5] ### S1 — [PCM12SMTR](https://www.flux.ai/tyler-s/pcm12smtr~r5.md) - Manufacturer Part Number: PCM12SMTR - Datasheet URL: https://www.ckswitches.com/media/1424/pcm.pdf - Manufacturer Name: C&K **Pins:** - H1 - H2 - M1 - M2 - M3 - M4 - P1 [pin 1] - P2 - COM - P3 [pin 3] ### SCL_PU — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Part Type: Resistor - Package: SMD_0603_1608Metric - Resistance: 2.2kΩ **Pins:** - P1 [pin 1] - P2 [pin 2] ### SDA_PU — [Generic Resistor](https://www.flux.ai/jharwinbarrozo/generic-resistor~3e.md) - Part Type: Resistor - Resistance: 2.2kΩ - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### VREG — [AP2112K-3.3TRG1](https://www.flux.ai/vasyl/ap2112k-33trg1~qk.md) - Part Type: Integrated Circuit - Manufacturer Part Number: AP2112K-3.3TRG1 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Manufacturer Name: Diodes Incorporated **Pins:** - EN [pin 3] - GND [pin 2] - VIN [pin 1] - VOUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/tyler-s/mcp2221a-framework-module~xz](https://www.flux.ai/tyler-s/mcp2221a-framework-module~xz).* --- *Generated from [https://www.flux.ai/tyler-s/mcp2221a-framework-module~xz](https://www.flux.ai/tyler-s/mcp2221a-framework-module~xz)*