Hi to All. For the development of my activities at Ell-i, I've found this collection of documents quite usefull: From the current board "Baselli", some documents can be found at the wiki: https://github.com/Ell-i/Hackathon/wiki/Components-STM32F051 Baselli: STM32F051xx Datasheet (already at wiki) "DocID022265 Rev 4" " http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00039193.pdf " Programming Manual (already at wiki) "PM0215" "Doc ID 022979 Rev 1" " http://www.st.com/web/en/resource/technical/document/programming_manual/DM00051352.pdf " Reference Manual (already at wiki) "RM0091" "DocID018940 Rev 5" " http://www.st.com/web/en/resource/technical/document/reference_manual/DM00031936.pdf " Cortex-M0 Technical Reference Manual "ARM DDI 0432C (ID113009)" " http://infocenter.arm.com/help/topic/com.arm.doc.ddi0432c/DDI0432C_cortex_m0_r0p0_trm.pdf " ARMv6-M Architecture Reference Manual "ARM DDI 0419C (ID092410)" " http://ecee.colorado.edu/ecen3000/labs/lab3/files/DDI0419C_arm_architecture_v6m_reference_manual.pdf " Flotelli: STM32F427 / STM32F427 Datasheet "DocID024030 Rev 3" " http://www.st.com/web/en/resource/technical/document/datasheet/DM00071990.pdf " Programmming Manual "PM0214" "Doc ID 022708 Rev 3" " http://www.st.com/web/en/resource/technical/document/programming_manual/DM00046982.pdf " Reference Manual "RM0090" "Doc ID 018909 Rev 5" " http://www.st.com/web/en/resource/technical/document/reference_manual/DM00031020.pdf " Cortex-M4 Technical Reference Manual "ARM DDI 0439D (ID061113)" " http://infocenter.arm.com/help/topic/com.arm.doc.ddi0439d/DDI0439D_cortex_m4_processor_r0p1_trm.pdf " ARM v7-M Architecture Reference Manual "ARM DDI 0403C_errata_v3 (ID021910)" " http://web.eecs.umich.edu/~prabal/teaching/eecs373-f10/readings/ARMv7-M_ARM.pdf " The architecture reference manuals were not directly available at ARM, but they can be easily found by google. I simply attached one of the possible sources. Hope it is useful, With Warm Regards, Ivan Raul On Tue, Feb 4, 2014 at 1:59 PM, Ivan Raul <supra.material@xxxxxxxxx> wrote: > For anyone interested in the discussion and without knowledge of the ST > ARM MicroControllers, this link is useful. > > http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1577 > > I'm using it to understand the differences between them > > With Warm Regards, Ivan Raul > > > On Tue, Feb 4, 2014 at 1:44 PM, Antti Louko <alo@xxxxxxxxx> wrote: > >> Teemu Hakala wrote: >> >>> Originally we settled for 427, but 429 has crypto hardware, that >>> might be nice. Regarding what I've said about magic numbers, both are >>> magical in the same way. >>> >> >> 429 doesn't have crypto. 437 and 439 have. >> >> /alo >> >> >