=== Atmel === * '''AVR 8bit RISC''' - ATmega 103L, ATmega 128, ATmega 64, and many others === Motorola/Freescale === * '''M68K family''' (including M68000, M68030, M68040 and M68060) * '''Coldfire 32bit CISC microcontroller''' - (including MCF5272 and MCF5282) * '''68HC705 8bit microcontroller family''' - several models * '''DSP56K''' (DSP56805 and DSP56807E) - Used extensively for stepper motor control, data acquisition and other mechanical devices. === Intel === * '''80C196''' - 16bit microcontroller; * '''80x86''' - Not properly a microcontroller, but used for some embedded Linux applications nevertheless. === ARM === * '''Motorola Dragonball MX-1/MX-L''' - Helped porting kernel 2.6 to it. * '''Intel PXA250/PXA255''' - Wrote Linux kernel drivers for this chip * '''Atmel AT91SAM7C3''' - Small embedded application for the FreeRTOS real-time kernel. * (many others, evaluation only) === Texas Instruments === * '''TI54 series''' DSPs, employed for high-speed signal processing such as an FSK modem. === Zilog === * '''Z80''' - Mostly for experimental purposes.