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Original question:

LP-MSPM0L1306: SysTick low power mode problem.

MSPM0G3107-Q1: Questions About Low Power Modes

Jack Roy
Intellectual 1341 points
Part Number: MSPM0G3107-Q1

H Team,

Have a couple questions about the low power modes for M0;

  • Do we have any additional granularity for current consumption in STANDBY0 vs STANDBY1 and STOP0 vs STOP1/2 or is it pretty much the same
  • What is the state of GPIO pins in Standby/shutdown/STOP modes? do they stay high/low or all go floating?
  • If they are not is there a fay to force the pins floating in standby mode?

Thanks!

-Jack

  • +1
    TI__Guru 56685 points

    Hello Jack,

    1. Power consumption numbers for each mode are given in the datasheet (Section 7.5). There are significant differences in current consumption between the modes.  In addition, you can find a table in section 8 (Table 8-1), that tells you what clocks and peripherals are on/off/optional for each mode.
    2. GPIO states are what you set them to. Default unconfigured state is High-Z as the IOMUX is cleared.That being said, IOMUX does not control Analog functionality, so for example an OPA is configured to use external pin, it will feed into the OPA (and draw current) regardless of IOMUX/GPIO setting. If OPA is shutdown, then its the same as if not configured. 
    3. You can set all pins to High-Z in code if wanting to.