I believe three of my 16F628s have suffered from the following problem documented on the Microchip website.
Can anyone help me erase a few PIC uCs?
Feb 26, 2007
7 Replies
formatting link
Buy a xtal
What part of the country are you in?
W "Some people are alive only because it is illegal to kill them."
. | ,. w ,
\|/ \|/ Perna condita delenda est
---^----^---------------------------------------------------------------
I'm assuming you're referring to changing the design to incorporate one. Well I have now....after going through three PICs!
I'm in Melbourne
I'm new to PICs and I haven't touched anything fancier than a central locking kit since highschool so please excuse me if these are really silly questions.
I haven't been able to find a good explaination of what an xtal is, it seems to be mentioned in relation to radios and music, would I be right in assuming its to do with using an external oscillator?
I was also thinking about disconnecting the Vdd pin from the programmer, and hooking it to a switching transistor, this transistor would be controlled by the Vpp pin (probably through a voltage divider) so Vdd only goes high once Vpp has hit ~12v. Would this work? and if there is a chance of it working, is it possible that it could damage my programmer? (I know my Vpp line can only provide a very small amount of current but I dont think switching a transistor should be a problem)
Thanks
-- Michael Heydon
Sort of. 'xtal' is the usual electronics industry abbreviation for "quartz cystal".
W "Some people are alive only because it is illegal to kill them."
. | ,. w ,
\|/ \|/ Perna condita delenda est
---^----^---------------------------------------------------------------
it's a short way to write crystal, (and apparently common way to confuse noobs),
you're correct.
Bye. Jasen
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required