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MSP430F6733A: internal REFO specification at 3.3V

Part Number: MSP430F6733A

Hi Experts,

REFO spec is defined as below.

We want to use MSP430F67x at 3.3V while the spec is defined at 3.0V. Can we consider even at VCC = 3.3 V, fREFO max is +-1.5%?

And if they use the temperature range from -20 to 80, the dfREFO becomes 1% = 0.01 * (80 – (-20)). Can we consider that the total +-2.5%(=1.5+1.0) is the tolerance for fREFO?