iMXRT1021 Power Architecture

[Ken_T]

We are creating a new design using the iMXRT1021 which will not use a battery cell and will not enter any power saving modes. Can we connect the power rails as shown below and still satisfy the IC's power management guidelines as outlined in the RM1020 series Hardware Development Guide ?

[RaRo]

Hello @Ken_T,

Can we connect the power rails as shown below and still satisfy the IC's power management guidelines as outlined in the RM1020 series Hardware Development Guide?

Yes, you can use the power rails like the picture imxrt1021_power_diagram that you share with us.

Usually, the VDD_SNVS_IN is the first to be powered like in our EVK, but as the Hardware Development Guide for the MIMXRT1020 Processor mentions: "The VDD_SNVS_IN supply must be turned on before any other power supply or connected (shorted) with the VDD_HIGH_IN supply." So, it should not be a problem.

Best regards, Raul.