2022-12-20 10:46 AM
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
2022-12-20 11:15 AM
Define "ultra low power".
Define requirements on "pulse counter".
JW
2022-12-20 12:23 PM
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;
2023-01-02 07:33 AM
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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