Post by thread:Yow! I blew up my pic!

In mlist.pic you write: >I have 2 comparators with their outputs running to RA0 and RA1. >Depending on the logic levels of RA0 and RA1, the chip will count >up or down and output to all 8 bits of Port B which then runs to >a 4016 Quad Bilateral Switch. What are you driving on the other side of the switch? Sounds like you are pulling too much current. You might want to buffer the data output with a 244.

I used Mike Keitz's suggestion of checking out what's going on between the port pins and the Vdd. Here are the results: All pins have around 5 Meg Ohms between Port pin & Vdd except RB0 - Vdd : where I get about 1.6K ohms. So- I guess I blew the RB0 port. Next Question: Obviously with this blown port, I can no longer program the chip in serial mode, - but is it possible to program it in Parallel mode? -4 Pics blown and desperately trying to salvage them- -()---()---()---()---()---()---()---()---()---()---()---()---()---()---()- Rolan Yang http://hertz.njit.edu/~rxy5310 Electrical Engineer spam_OUTrxy5310TakeThisOuThertz.njit.edu .....kyuriusKILLspam@spam@tsb.weschke.com VR,ROBOTICS,FENCING,HACKING,INDUSTRIAL MUSIC,ART,EXPLOSIVES,INLINE SKATING THESE ARE A FEW OF MY FAVORITE THINGS. -()---()---()---()---()---()-----()-()---()---()---()---()---()---()---()- 4 out of 10 people are annoyed by ^ this.