Can 16F628A be programmed with JDM?

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What is the difference between the A part and the non-A part, anyway?

I know they have some manufacturing differences, but functional-wise?
 
Yes, 16F628A can be programmed by JDM. A and non-A parts are almost the same (changes include: slower Timer1 oscilator, different config bits and some comparator issues are fixed). And all A parts are able to run @ 20Mhz (Non-A parts were marked with maximum frequency).
 

Why did microchip implement slower timer1?
 

Presumably it's using technology from the later chips?, is the timer like this on all the newer ones?.

By the way, the 'A' simply means a later silicon revision, nothing else.
 
I was writting that in hurry, and I ment that Timer1 oscilator (LP crystal connected to TIOSC pins) was able to run @ 200Khz, but in A version it can run @ 32KHz max. It is a result of different manufacturing technology.
 
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