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MSPM0G1506: Able to read VCC bus while erasing flash or writing to flash (prefer able to read during either)

roger schenk
Prodigy 81 points
Part Number: MSPM0G1506

Tool/software:

Our MSPM0G1506 design will be battery powered and running nominally at 4MHz when active.

VCC range during the defined lifetime of the battery is 3.0-2.2V

is it feasible to read the VCC rail (channel 7) while the Flash erase/write is active? 

Essentially, since the Flash erase/write is my most power consuming event (10mA at 3.3), I want to see how much sag my power rail has during that load. (if possible)

OBTW- what happens to the erase/write current as VCC goes lower?

THANKS for any replies!

  • +1
    TI__Genius 9095 points

    Hi Roger,

    As there is only one flash bank in M0G1506, we could not execute flash program while flash erase/write operation. But you could load the "read VCC Voltage" program in SRAM to make sure it is run in SRAM, it will be fine.

    And the range 3.0-2.2V power supply range is supported by M0, but we need to avoid a quick drop during flash operation, to avoid a erase or write fail.