AnsweredAssumed Answered

What is voltage scaling feature ?

Question asked by Ramesh Nayak on May 18, 2018
Latest reply on May 18, 2018 by Ramesh Nayak

Hello , 

I am using TIM6 to generate 1 sec of delay and i am toggling LED gpio in the timer ISR

HCLK is 50MHz , prescalar = 999, and period = 49999

 

 

The issue is when i use below macro, i get close to 1sec. shown in the pic below

__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

 

and when the that macro is not used. there is a significant difference . I want to know how exactly that macro is affecting here. i can not able to connect the dots. please help 

without above macro output 

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