I intend to connect some of your MEMS devices using ADC and possible SPI to a MCU and wounder which one of your MCU is supported under linux?
Do you mean - what development tools are available on Linux?
If so, than you can use for all ARM/Cortex M3 based MCUs the GNU C-Compiler-Set, any IDE (Eclipse normally preferred) with GDB integration and our mIDAS-Link, which is in fact a special edition of the Segger J-Link and is supported by a Linux GDB-Server (available form the Segger WebSite).
For the older 8052 based cores there are some tools available also on Linux. Also there are Serial Downloader's available - see also Is a Linux Downloader for ADuC8xx available? But unfortunately, as far as I know no support to Debug.
Is there any perticular evulation board that you have that you also have a BSP for Linux, preferable with some boot manager like u-boot?
OK - this sounds more like you are looking for a µC which is capable to run Linux. This here is the Community for our family of 8052-based, ARM7-TDMI and Cortex M3 based Precision Analog Microcontrollers, means very tiny cores and memory footprints with the focus on the integrated high performance analog frontend from 12-Bit to 24-Bit resolution. This parts are more likely ADC/DACs with a integrated core rather than processing machines capable of executing a Linux kernel. If you are looking for this, than you should have a look into the BLACKFIN community - this cores are well supported with a µCLinux - have a look onto http://www.analog.com/en/processors-dsp/blackfin/products/index.html
In particular more info is available also at www.blackfin.uclinux.org/ and http://www.analog.com/en/processors-dsp/blackfin/adsp-bf537/processors/BF537-STAMP/eb.html
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