Using the MSP430F5418A microcontroller, we intend to run with an MCLK frequency of 16MHz eventually. FIrst we start at a lower frequency. We are shifting the VCORE voltage setting to 1.8V in one swell foop instead of stepping it a stage at a time. I have now been told that this must be done in stages, first going to 1.4V, letting it "settle", then shifting to 1.8V. And then after that has settled, I understand I can increase MCLK frequency to 16MHz.
My question is: Is there some TI documentation that specifies what these steps must be?
Our Vcc is 3.3V. I understand that an internal regulator will produce the 1.4V or 1.8V etc. for VCORE, and that we must write a patten into a certain register to command it to go to those certain levels of voltage.
Where is this specified in TI literature or App Notes or etc.?
Thanks in advance!