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nRF9160 RAM Retention Power

Kurt Mandeville

Section '5.2.1.1 Sleep' of the nRF9160 Production Specification v1.0 identifies SLEEP power with no RAM retention.  My application will require partial RAM retention during SLEEP.  What is the typical power consumption in SLEEP mode with full RAM retention?

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    From the section you are reading, I believe that is system off mode (see 5.1.1.2) with reset on interrupt to wake up the MCU.

    From the section 5.1.5.8. Reset Behaviour, RAM is not retained by default in this method of deep sleep. See table 16.

    To retain it, you would need to specify that you want to keep it but it shouldn't be more than 1.8uA where the MCU is just kept in the SYSTEM ON IDLE state.

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    From the section you are reading, I believe that is system off mode (see 5.1.1.2) with reset on interrupt to wake up the MCU.

    From the section 5.1.5.8. Reset Behaviour, RAM is not retained by default in this method of deep sleep. See table 16.

    To retain it, you would need to specify that you want to keep it but it shouldn't be more than 1.8uA where the MCU is just kept in the SYSTEM ON IDLE state.

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