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Processor recommendation for low power mode with limited peripheral activity

RandyP
Guru* 84110 points
Other Parts Discussed in Thread: OMAP-L138, OMAPL138

I need a recommendation, please, for an ARM processor that can be put in a very low power mode (~2mW) but with some peripherals capturing data (I2C and/or SPI) and hopefully a PRU or M4 or similar sending that data out periodically.

It is hard to tell from the power spreadsheets exactly what we can get in the lowest power modes while leaving some peripherals active. So your experience with the low power modes will be appreciated.

Even the OMAP-L138 could work if it can meet the low power number and have the PRU on or at least serial ports working.

Regards,
RandyP

  • 0
    TI__Guru**** 393215 points
    Hi Randy,

    As I see it none of the Sitara devices can fit into this 2mW requirement. Note that this has to be active power if there are to be working peripherals.
  • 0
    TI__Guru* 84475 points

    Hi Randy

    Does not look like there is a good solution available to meet the 2 mW number (unless c5000 family was in consideration). The OMAPL138 deep sleep numbers are in the order of ~6-10 mW - this is the state with all clocks into the device gated at the root / PLL. So anything running above that will be higher than this baseline, even if it was able to run/process at the lowest device frequency etc.

    Regards

    Mukul