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The STM32 is the third ARM family by STMicroelectronics. It follows their earlier STR9 family based on the ARM9E core, and STR7 family based on the ARM7TDMI core. The STM32 is based on the ARM Cortex-M family of cores.

7
votes
The Start Of Frame signal can be used as a (slow) clock derived from the host's USB clock, which ideally should be locked to the host's general idea of time. The focus on audio applications is becaus …
answered Dec 11 '14 by Simon Richter
3
votes
I'd look into using a timer to start the conversion, and an interrupt to collect the result. The CPU core can then sleep until data is available.
answered Oct 6 '16 by Simon Richter
3
votes
No. Usually, the data sheet explicitly mentions what to do with unused pins. For most microcontrollers, the correct approach is to leave them open on the PCB, and leave the internal pull-up logic ena …
answered Dec 11 '16 by Simon Richter