What is the voltage used to power the stm32 in the Sony smartwatch -

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the stm32 datasheet says number of wait states reading flash memory have configured based on voltage used power microcontroller, , frequency. when running @ 120mhz, assuming voltage higher 2.7v configured 3 wait states microcontroller crashes under high cpu load.

i see (based on https://github.com/underverk/smartwatch_toolchain/blob/master/src/driver_power.c) there's power management unit powers microcontroller, although sony's site doesn't acknowledge existence. voltage used power microcontroller?

the micro controller fed 1.8v. when in dfu-mode, changed 3.3v.


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