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Samd21e breakout

mitsake·samd21e-breakout·hardware/samd21e_breakout.kicad_pcb

Samd21e breakout layout, top view — open source Microchip SAM board by mitsake
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About the Samd21e breakout

Samd21e breakout is an open source Microchip SAM PCB design by mitsake, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 35.7 × 21.6 mm, with 14 components from 11 distinct parts.

Its main chip is the ATSAMD21EXX, from the Microchip SAM family. Other key parts include the AP2112K-3.3. By type, the board carries 7 capacitors, 3 connectors, 2 ICs, 1 crystal and 1 switch.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

A small breakout board for ATSAMD21Exx chips.

This is a small, simple breakout for the Microchip (formerly Atmel) [ATSAMD21E][] series of chips in the TQFP package. I designed it mostly for something to do while locked down at home, but also so that I could use the bare ICs I had spare from previous projects.

[ATSAMD21E]: https://www.microchip.com/wwwproducts/en/ATSAMD21E18

Most I/O pins are broken out, with the exception of PA00/01 (XIN32 and XOUT32 for the watch crystal) and PA24/25 (D- and D+ for USB). The SWD interface is available via either the header, or through the [SOICbite][] connector opposite the USB footprint. There's an…

Samd21e breakout, from the project README
From the project README

Main components on the Samd21e breakout

AP2112K-3.3ATSAMD21EXX

Samd21e breakout bill of materials (BOM)

14 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AP2112K-3.3
U1
1
ATSAMD21EXX
ATSAMD21E18A
U2
1
32.768 kHz
Y1
1
USB_B_Micro
J1
1
Conn_01x26_Male
J2
1
Conn_01x08_Male
J3
1
SW_Push
SW1
2
10u
C1, C2
2
0.1u
C3, C4
1
1u
C5
2
10p
C6, C7

Samd21e breakout design files

The KiCad project lives in the mitsake/samd21e-breakout repository on GitHub; these links point at the commit this page was built from.

Samd21e breakout: common questions

What microcontroller does the Samd21e breakout use?

The Samd21e breakout is built around the ATSAMD21EXX, from the Microchip SAM family.

How big is the Samd21e breakout?

The Samd21e breakout measures 35.7 × 21.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Samd21e breakout?

14 components, from 11 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 Samd21e breakout design files?

From the mitsake/samd21e-breakout repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Samd21e breakout design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which mitsake chose for the repository.

Can I test firmware for the Samd21e breakout 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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