Julian Straub

creations and thoughts

Minimum Power Consumption Atmel vs. STM32

Posted at — Sep 7, 2020

What is the (theoretical) power requirement for different micro controllers to during deep sleep and to generate a PWM signal and measure voltages? Numbers are taken from the respective datasheets. PWM currents do not include driving the output pins.

ATtiny85 (1.8V)

ATmega328p (1.8V)

STM32L431 (1.8V)

The STM32 looks very promising as a low power microcontroller which can still pack a punch when needed (by going up to 80MHz and drawing a few mA).