ulrta low power 4 channel pulse counter

GErma.1 · ‎2022-12-20

Hi

I would like to design an ultra low power pulse counter based. The LPTIM is the best option. However, my application require's 4 channels. Is there anyway to achive this with the STM32?

BR

Gilberto

waclawek.jan · ‎2022-12-20

Define "ultra low power".

Define requirements on "pulse counter".

JW

GErma.1 · ‎2022-12-20

Hi

The application is gas metering. The pulse frequency is < 1Khz per channel;

The average consumption when counting pulses @ 1Khz on all 4 channels is < 1uA;

BR

Gilberto

Amel NASRI · ‎2023-01-02

Hi @GErma.1 ,

STM32U5 has several LPTIM instances, each one with up to 2 independent channels.

The LPBAM feature available for STM32U5 helps to save power. In the AN4865 Low-power timer (LPTIM) applicative use cases on STM32 MCUs and MPUs, you may find examples on the how to.

-Amel

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