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MSP430F5418A: MSP430F5418A Abnormal chip operation

user6029042
Intellectual 290 points
Part Number: MSP430F5418A

The msp430f5418a specification states that the clock of the system can work normally when the power supply voltage of 12m frequency crystal oscillator is 1.8V; now when 25m crystal oscillator is used, the power supply voltage must be above 3.5V to work normally. What's the reason?

  • 0
    TI__Genius 12315 points

    Hello,

    You can consider the CPU is a load with impedance. The higher frequency will increase the impedance which causes higher voltage drop.

    So you need higher voltage to drive the load and make sure the correct 0/1 logic. 

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