MSP432P401R: External 48MHz Crystal

erik lee2

Genius 3060 points

Part Number: MSP432P401R

hi,

if my MSP432P401R's MCLK source is from external 48MHz Cryatal, can MSP432P401R's Vdd feeds only 1.8V?

And if i wnat to set MCLK be 48MHz and clock source from internal DCO, what the minimum Vdd be necessary?

Thank you.

over 7 years ago

0 PM over 7 years ago

TI__Mastermind 27145 points

Hi,

I sent it to the concerned engineer and they will get back to you.

Thanks,

0 Chris Sterzik over 7 years ago

TI__Guru 74771 points

Please see 5.5 Operating Mode VCC Ranges for the MSP432P401R. The limitation of the MCLK is related to the core voltage. You would need to set the core voltage to VCORE1 to run at 48Mhz MCLK with a 1.8V Vcc. (also make sure your flash wait states are set to '1')

Regards,

Chris

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MSP432P401R: External 48MHz Crystal