STM32G474RET6 HRTIM Long term reliability of writing crossbar registers on every pwm cycle

[ivanmak]

Would writing to the crossbar registers (SETx1R, RSTx1R, SETx2R, RSTx2R of all 6 timers) on every PWM cycle (max 200kHz) affect long term reliability? I'm running this in an interrupt routine for a power converter and I'm wondering if doing this would make sense to have a more consistent processor delay. Preload is enabled on all 6 timers and master timer. Register updates on timers 1-6 occur on master timer register update.

[mƎALLEm]

Hello,

I'm wondering why writing to registers in the MCU would affect the reliability? reliability implies to the Flash not to the registers.

[TDK · Accepted solution]

Writing to register won’t affect reliability. You’re not going to wear things out, if that is the concern. The registers are not like flash where there is a limited number of read/write cycles.