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.
The following use LUFA as the USB stack:
Certain MCUs which do not have native USB will use V-USB instead:
You can also use any ARM chip with USB that ChibiOS supports. Most have plenty of flash. Known to work are:
- STM32F0x2
- STM32F103
- STM32F303
- STM32F401
- STM32F411
- STM32F446
- STM32G431
- STM32G474
- STM32L412
- STM32L422
- STM32L433
- STM32L443
There is limited support for one of Atmel's ATSAM microcontrollers, that being the ATSAMD51J18A used by the Massdrop keyboards.