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How to defined a ripple range and absolute maximum voltage?

Question asked by Takayuki Ishii on Nov 28, 2016
Latest reply on Nov 28, 2016 by Takayuki Ishii



I have some question about definition of ripple range.


It is defined 5% Vp-p of supply voltage average value in Hardware Development Guide.

If VDD_ARM_CAP  average value is 1.27V, ripple spec allowed 1.238V( = 1.27x0.975) ~ 1.301V( = 1.27x1.025).

Is it correct?


If so,

Absolute maximum voltages of VDD_ARM_CAP is defined to 1.3V in Datasheet.


Is it OK that average value is 1.27V of VDD_ARM_CAP because average value is less than 1.3V?

Or is it NG because top of ripple voltage is over a 1.3V?


Best regards,