I'm starting to look seriously at this micro for an existing product we're modernizing, and the dual supplies make me a little nervous. When using other processors in the past I have found that it's common to have sequencing requirements, but I've found nothing searching the datasheet, net, and here.

The addition of this micro and some other 3.3V stuff to this traditionally +-5V device make a thorough redesign of the power board likely.

Any advice folks?

Cory