Which PICs require VPP before VDD?

Which PICs require VPP before VDD?

Are they older PICs?

William At MyBlueRoom said:

Which PICs require VPP before VDD?
Are they older PICs?

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No, generally they are the more modern ones - and mostly ones that have internal oscillators.

Also they don't usually 'need' Vpp before Vdd, it's just to stop the internal oscillator running - all those I've tried work perfectly with Vdd before Vpp, as long as the time between them is short enough!.

Post #6 (old list)... https://www.electro-tech-online.com/threads/pic-programmer-winpicprog-my-findings.17354/