Pmod samd21-usbu pth
TomKeddie·prj-pmod·hardware/pmod-samd21/pmod-samd21-usbu-pth/pmod-samd21-usbu-pth.kicad_pcb
About the Pmod samd21-usbu pth PCB
Pmod samd21-usbu pth is an open source Microchip SAM PCB design by TomKeddie, published on GitHub under the MIT license. It is a 2-layer board measuring 18.2 × 31.1 mm, with 18 components from 14 distinct parts.
Its main chip is the ATSAMD21G-A, from the Microchip SAM family. By type, the board carries 7 capacitors, 4 connectors, 2 resistors, 1 IC, 1 transistor and 1 crystal.
From the project
All CPU power is derived from the PMOD power pins. The VBUS pin on the usb connector is connected only to a test point.
All CPU power is derived from the PMOD power pins. The VBUS pin on the usb connector is connected only to a test point.
\* SPI pins are as nominated, SAMD21 pin allocations allows many other combinations
\* SPI pins are as nominated, SAMD21 pin allocations allows many other combinations

Main components on the Pmod samd21-usbu pth
Pmod samd21-usbu pth bill of materials (BOM)
18 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATSAMD21G-A | QFP50P900X900X120-48N | U1 |
| 1 | 2N7002PW | SOT-323_SC-70_Handsoldering | Q1 |
| 1 | 32.768kHz | Crystal_SMD_3215-2pin_3.2x1.5mm | Y1 |
| 1 | PMOD-2x6-MALE | PMOD_2X6_PTH_RA_PLUG | J1 |
| 1 | PMOD-2x6-FEMALE | PMOD_2X6_PTH_RA_SOCKET | J2 |
| 1 | USB_B_Micro | USB_MICRO_TAOBAO_SMD_PTH | J3 |
| 1 | CORTEX_DEBUGPTH | CONN_1.27_2x5 | J4 |
| 1 | SWITCH-MOMENTARY-2SMD | SW_SPST_SMD_2PIN_3.5x6.0 | S1 |
| 1 | LED | LED_0402 | D1 |
| 4 | 0.1uF | C_0402 | C1, C2, C3, C4 |
| 2 | 6pF | C_0402 | C5, C6 |
| 1 | 1uF | C_0402 | C7 |
| 1 | 10K | R_0402 | R1 |
| 1 | 330 | R_0402 | R2 |
Pmod samd21-usbu pth design files
The KiCad project lives in the TomKeddie/prj-pmod repository on GitHub; these links point at the commit this page was built from.
Pmod samd21-usbu pth: common questions
What microcontroller does the Pmod samd21-usbu pth use?
The Pmod samd21-usbu pth is built around the ATSAMD21G-A, from the Microchip SAM family.
How big is the Pmod samd21-usbu pth PCB?
The Pmod samd21-usbu pth measures 18.2 × 31.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pmod samd21-usbu pth?
18 components, from 14 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Pmod samd21-usbu pth design files?
From the TomKeddie/prj-pmod repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Pmod samd21-usbu pth design in my own project?
Yes, under the terms of its MIT license, which TomKeddie chose for the repository.
Can I test firmware for the Pmod samd21-usbu pth without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.
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