Low Power I2S MCU

[bb00]

I'm looking for an ST microcontroller that can do I2S receiving while remaining low power, presumably by keeping the core asleep and using DMA to copy I2S chunks to a buffer. I think I saw a video demo of this at some point somewhere on the website, but now I cant find it. 

When I say low power, I mean <1mA, preferably <200uA if possible. I assume this would be something like an M0 or M4 core. 

[AScha.3]

Look at L0 series and check from DS and RM, that I2S and DMA can work at low power mode.

[Imen.D]

Hello @bb00 and welcome to the Commuinty,

I recommend using the MCU Finder tool to refine your selection and choose the most suitable MCU:

• STM32-FINDER: for mobile devices
• ST-MCU-FINDER-PC: PC version or the one embedded in STM32CubeMX 

[bb00]

Thanks, but this tool isn't detailed enough for what I want - I need to sort by the run current of the I2S peripheral (also having this as a download tool to be set up seems very odd)

[Andrew Neil]

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@bb00 wrote:

 (also having this as a download tool to be set up seems very odd)

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There is also an online selector:

https://www.st.com/content/st_com/en/stm32-mcu-product-selector.html

 

Distributors also often have parametric search tools ...

 

[gregstm]

I don't know your application, so this might not be relevant, but I've been experimenting with an I2S microphone (TDK T5848) that can be put into a 20uA analog mode and it will wake up the micro if sound over a programmed threshold level is detected.