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how to reach STM32L073RZ optimal energy consumption

Question asked by raphael declercq on May 2, 2017
Latest reply on May 3, 2017 by raphael declercq

Hey,

 

I'm working with a STM32L073 because I need a really low power application.

For now, I am working in STOP mode, because I need the SPI and many interrupts to work.

I can reach 1.5µA but according to the datasheet, i should be able to reach 0.5 µA, but i can't.

Any ideas of what i could disable to reach this 0.5µA? I already tried to lower Vrefint and BOR but this shows no improvements. 

I'm already using the low power regulator, the clocks are as slow as possible and i'm using the external oscillator for the RTC.

 

Thanks in advance

Best regards,

Raphael

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