MSPM0G3519: NRST pullup resistor nominal

Hi Mykhaylo,

The 47k pull up resistor in NRST has been used in MSPM0G3509 launchpad and a lot of customer's schematic design.

Maybe you could try to use 10nF (used in launchpad) or 47nF capacitor in NRST.

By the way, could you please tell what do you observe when using 47K + 100nF in NRST?

Best Regards,

Pengfei

Hi Pengfei, thank you for the reply.

i'm observing reset behavior - as if NRST pulled to ground - no oscillation, no operation, consumption is very low.

Hi Mykhaylo,

If NRST is connected to ground, the MCU will be a reset status and program could not run.

could you tell if 47k is too big or it MUST be ok and 100nF is really out of specs cause on some of TI documents 100nF on reset is totally valid nominal. thank you

Hi,

As descripted in the datasheet, we recommend a 47k + 10nF in NRST pin, and this is also what used in our launchpad. And this is what we could commit power on well for NRST pin.