Quote Originally Posted by savnik
Which other Pics are Compatibly (same pins) with :
pic16f84a - pic16f628a - pic16f648a - pic16f88 - pic16f818 - pic16f819
Do you mean just the same number of pins.... or the same peripherals connected to pins.

http://melabs.picbasic.com/Scripts/perl/picsearch.pl will allow you to select PICs based on what features you require.

The examples you list above arent what I would deem compatible. The F84A doesnt have a UART. The F88 does have a UART but it is on different pins to the 628A/648A. Cant comment on the other two as I havent looked at them.