What should i do? Change STM32F217IG VDD(3.3V to 1.8V or 1.8V to 3.3V) anytime

[JLee.21]

Hi!

I'm using STM32F217IGT.

I want to know changing VDD anytime.

I think.

1. change firmware correction VDD(3.3V firmware or 1.8V firmware)

2. change system clock configuration void SystemClock_Config(void) in main.c

 --> 7WS

Thank you!

[waclawek.jan]

If you set the system clock/waitstates for 1.8V, you can use any VDD value.

JW

[JLee.21]

Hi! waclawek.jan.

Thank you your answer!!

If i set 7WS, i can use any VDD value?

I added capture Table3. Number of wait sate...

It's difference Voltage range...

Thank you!

[waclawek.jan]

> If i set 7WS, i can use any VDD value?

Yes.

JW

[JLee.21]

Hi! waclawek.jan.

Thank you your answer!

I'll test that setting and I'll answer result.

Thank you!