Thanks ALL for the reply Can anyone please let me know what exactly( order numbers) I need to buy so that I am able to debug PIC16F628A? In Microchip docs I found out that I would need 1.Header AC162053=20 2. ICE/ICD Device PIC16F648A-ICD=20 3 Board Assembly Number 02-01695 ( is that MPLAB ICD2 or MPLAB REAL ICE?) Are they all needed( if I already have PICkit3 ? ANd where can I buy them all? @Dwayne=20 > Be sure to purchase at least two of them -=20 By "at least two of them"do you mean for the exactly the same models or=20 two for different models? Thanks L. that lets you keep working > if you 'Oops' the module. Do note that these modules are covered > under Microchip's SAR program, which means that you can get them fixed > for free if you do make a mistake and fry one. Basically, you open a > support ticket at Microchip's support website, they eventually get > around to talking to you about the problem (which is easy if you have a > 2nd unit that is currently working properly), then they send you a > replacement along with shipping instructions for returning the defective > unit. >=20 > Hope this helps! >=20 > dwayne >=20 > --=20 > Dwayne Reid > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > (780) 489-3199 voice (780) 487-6397 fax > www.trinity-electronics.com > Custom Electronics Design and Manufacturing >=20 > --=20 > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .