How to disable PMIC_ON_REQ in suspend mode.

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How to disable PMIC_ON_REQ in suspend mode.

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Contributor I

Hello,

I'm using i.MXRT 1060 EVK board.

I'm testing a low power mode, especially SNVS and SUSPEND mode.

Power CIrcuit.png

I used 'evkmimxrt1060_power_mode_switch_bm' example code.

In SNVS mode, PMIC_ON_REQ level is low and DCDC_3V output is 0V.

In SUSPEND mode, PMIC_ON_REQ level is high and DCDC_3V output is 3.3.V.

I don't know why PMIC_ON_REQ is high in SUSPEND mode.

I've tested it again after changing PMIC_ON_REQ to GPIO.

And I inserted code, PMIC_ON_REQ = 0, before __WFI() function was executed.

But I think system was locked, and a button wakeup was not working.

And a power consumption is higher than original SUSPEND mode.

I'm going to use SUSPEND mode to reduce power consumption, not SNVS.

In SUSPEND mode, I want to know how I set to low in PMIC_ON_REQ pin.

Thank you!

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NXP TechSupport
NXP TechSupport

Hello,

>> In SUSPEND mode, I want to know how I set to low in PMIC_ON_REQ pin.
Unfortunately,Since SNVS_PMIC_STBY_REQ_GPIO5_IO02 will output a high-level signal under Stop Mode(Suspend Mode) for the EVK board. Sorry for the inconvenience may cause.

Have a nice day.

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