docs/compatible_microcontrollers.md

   1 # Compatible Microcontrollers
   2
   3 QMK runs on any USB-capable AVR or ARM microcontroller with enough flash space - generally 32kB or more, though it will *just* squeeze into 16kB with most features disabled.
   4
   5 ## Atmel AVR
   6
   7 The following use [LUFA](https://www.fourwalledcubicle.com/LUFA.php) as the USB stack:
   8
   9 * [ATmega16U2](https://www.microchip.com/wwwproducts/en/ATmega16U2) / [ATmega32U2](https://www.microchip.com/wwwproducts/en/ATmega32U2)
  10 * [ATmega16U4](https://www.microchip.com/wwwproducts/en/ATmega16U4) / [ATmega32U4](https://www.microchip.com/wwwproducts/en/ATmega32U4)
  11 * [AT90USB64](https://www.microchip.com/wwwproducts/en/AT90USB646) / [AT90USB128](https://www.microchip.com/wwwproducts/en/AT90USB1286)
  12
  13 Certain MCUs which do not have native USB will use [V-USB](https://www.obdev.at/products/vusb/index.html) instead:
  14
  15 * [ATmega32A](https://www.microchip.com/wwwproducts/en/ATmega32A)
  16 * [ATmega328P](https://www.microchip.com/wwwproducts/en/ATmega328P)
  17
  18 ## ARM
  19
  20 You can also use any ARM chip with USB that [ChibiOS](http://www.chibios.org) supports. Most have plenty of flash. Known to work are:
  21
  22 ### STMicroelectronics (STM32)
  23
  24  * [STM32F0x2](https://www.st.com/en/microcontrollers-microprocessors/stm32f0x2.html)
  25  * [STM32F103](https://www.st.com/en/microcontrollers-microprocessors/stm32f103.html)
  26  * [STM32F303](https://www.st.com/en/microcontrollers-microprocessors/stm32f303.html)
  27
  28 ### NXP (Kinetis)
  29
  30  * [MKL26Z64](https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/kl-series-cortex-m0-plus/kinetis-kl2x-72-96-mhz-usb-ultra-low-power-microcontrollers-mcus-based-on-arm-cortex-m0-plus-core:KL2x)
  31  * [MK20DX128](https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/k-series-cortex-m4/k2x-usb/kinetis-k20-50-mhz-full-speed-usb-mixed-signal-integration-microcontrollers-based-on-arm-cortex-m4-core:K20_50)
  32  * [MK20DX256](https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/k-series-cortex-m4/k2x-usb/kinetis-k20-72-mhz-full-speed-usb-mixed-signal-integration-microcontrollers-mcus-based-on-arm-cortex-m4-core:K20_72)
  33
  34 ## Atmel ATSAM
  35
  36 There is limited support for one of Atmel's ATSAM microcontrollers, that being the [ATSAMD51J18A](https://www.microchip.com/wwwproducts/en/ATSAMD51J18A) used by the [Massdrop keyboards](https://github.com/qmk/qmk_firmware/tree/master/keyboards/massdrop).