What is the maximum oscillator frequency for 16F628A uC? The datasheet says it is 20MHz. But I have seen that PICs without -20/P suffix operate only upto 4MHz and those with this suffix operate upto 20MHz. Is this true for 16F628A also? Nothing about this suffix is mentioned in the datasheet.
But I have seen that PICs without -20/P suffix operate only upto 4MHz and those with this suffix operate upto 20MHz. Is this true for 16F628A also? Nothing about this suffix is mentioned in the datasheet.
I had 16F628-20/P in my PIC programmer faulty running at 6MHz and I could not find a new blank chip in the market. The only option available was 16F628A and I was doubtful whether it would run at 6MHz without the -20/P suffix. Now I burned a new 16F628A chip and the programmer is woking back again. Thanks a lot guys.
I have tested 16F627 very old version can run 30Mhz 4V
16F628A 1 year before version can run 40Mhz 4V
16F628A 1 year before version can run 50Mhz 5.1V, but alway hang up and reset by WDT.
I did not use EEprom routine.