# [2-layer] JLCPCB Constraints ## Description Use this template if you're planning to get your 1 to 2-layer board manufactured in JLCPCB. It has the via min/max and trace width constraints already baked as global rules. #project-template #template #manufacturer-design-rules ## Project Details - **Owner:** sebastianoh - **Created:** 4/1/2025 - **Last Updated:** 4/1/2025 - **Visibility:** Public ## Key Components ### D1 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1~89.md) - Manufacturer Name: Microchip - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf - Quantity: 24 - Function: Ghosting prevention in key matrix - Manufacturer Part Number: 1N4148-1 **Pins:** - A [pin 2] - K [pin 1] ### J1 — [USB-C 2.0 Receptacle](https://www.flux.ai/corynrobinson/usb-c-20-receptacle~cf.md) - Manufacturer Name: GTC - Part Type: USB C - Manufacturer Part Number: USB4105-GF-A - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Function: USB D+ and D– interface to ATmega32U4 **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 7] - D- [pin 9] - D+ [pin 8] - D+ [pin 10] - GND [pin 15] - GND [pin 1] - GND [pin 16] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 3] - VBUS [pin 14] - VBUS [pin 13] - VBUS [pin 4] ### SW1 — [Cherry MX Orange MX2A-LC3W](https://www.flux.ai/vasy_skral/cherry-mx-orange-mx2a-lc3w~c9.md) - Arrangement: 4 rows x 6 columns - Part Type: Switch - Manufacturer Name: Cherry Americas LLC - Quantity: 24 - Datasheet URL: https://drive.google.com/file/d/1uagNdBKprnwU-krNzypMUNpVQe_gN72c/view - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MX2A-LC3W **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ATMEGA32U4-AU](https://www.flux.ai/vasy_skral/atmega32u4-au~12w.md) - Symbol Style: Parametric - Manufacturer Name: Microchip - Part Type: Microcontroller - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7766-8-bit-AVR-ATmega16U4-32U4_Summary.pdf - Manufacturer Part Number: ATMEGA32U4-AU **Pins:** - ~HWB~/PE2 [pin 33] - ~RESET [pin 13] - AREF [pin 42] - AVCC [pin 24] - AVCC [pin 44] - D- [pin 3] - D+ [pin 4] - GND [pin 43] - GND [pin 23] - GND [pin 15] - GND [pin 35] - PB0 [pin 8] - PB1 [pin 9] - PB2 [pin 10] - PB3 [pin 11] - PB4 [pin 28] - PB5 [pin 29] - PB6 [pin 30] - PB7 [pin 12] - PC6 [pin 31] - PC7 [pin 32] - PD0 [pin 18] - PD1 [pin 19] - PD2 [pin 20] - PD3 [pin 21] - PD4 [pin 25] - PD5 [pin 22] - PD6 [pin 26] - PD7 [pin 27] - PE6 [pin 1] - PF0 [pin 41] - PF1 [pin 40] - PF4 [pin 39] - PF5 [pin 38] - PF6 [pin 37] - PF7 [pin 36] - UCAP [pin 6] - UGND [pin 5] - UVCC [pin 2] - VBUS [pin 7] - VCC [pin 14] - VCC [pin 34] - XTAL1 [pin 17] - XTAL2 [pin 16] ### X1 — [XSHEELNANF-16MHZ](https://www.flux.ai/lcsc/xsheelnanf-16mhz~fkfw.md) - Manufacturer Part Number: XSHEELNANF-16MHZ - Product Info Url: https://lcsc.com/product-detail/Others_TAITIEN-Elec-SMD-5032-2P_C242221.html - LCSC Part Number: C242221 - Package or Case Code: OSC-SMD_2P-L5.0-W3.2 - Part Type: Crystals - Manufacturer Name: TAITIEN(泰艺电子) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811052123_TAITIEN-Elec-XSHEELNANF-16MHZ_C242221.pdf - JLCPCB Part Class: Extended Part - Frequency: 16MHz **Pins:** - OSC1 [pin 1] - OSC2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sebastianoh/2-layer-jlcpcb-constraints~qg](https://www.flux.ai/sebastianoh/2-layer-jlcpcb-constraints~qg).* --- *Generated from [https://www.flux.ai/sebastianoh/2-layer-jlcpcb-constraints~qg](https://www.flux.ai/sebastianoh/2-layer-jlcpcb-constraints~qg)*