please dont rip this site

Microchip Technologies In Circuit Debugger

Programming method used by ICD, comparied to Low Voltage Programming, use of RB3

John Andrews of Microchip says:

...The RB3 pin is only used for low voltage programming. While the chips come from the factory with this mode enabled, in case you want to use it as your first programming method, the ICD (and all other commercial programmers that I know of) use the more traditional 13v, programming method. So when you debug with the ICD its important to disable this mode in the configuration word unless you take the appropriate steps to prevent an inadvertent high on RB3, which will cause the device to stop running and go into programming mode.

Making this connection to the ICD isn't required since the ICD uses the 13v method. Its not recommended since it uses another one of your I/O pins that otherwise you could use for something else.

If you intend to make use of the low voltage programming method for a field programmer, then you will need to take the appropriate steps to insure that this pin is normally pulled down to keep the device out of programming mode. Then your programming device can pull the pin high when you want it to program. Even in this situation I would not connect RB3 to the ICD as this might interfere with your custom programmer interface.

I have seen others use the low voltage method to allow other chips in their system to program the PIC with 5v only signals and also use the ICD with its normal 13v programming method for s/w debug (in this case don't disable LVP)....

David A Cary Says: " Jim Robertson has a few more details " +

Questions:


file: /Techref/microchip/icdlvrb3.htm, 3KB, , updated: 2009/3/31 02:30, local time: 2024/10/13 20:16,
TOP NEW HELP FIND: 
44.192.95.161:LOG IN
©2024 PLEASE DON'T RIP! THIS SITE CLOSES OCT 28, 2024 SO LONG AND THANKS FOR ALL THE FISH!

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.piclist.com/techref/microchip/icdlvrb3.htm"> Programming method used by ICD, comparied to Low Voltage Programming, use of RB3</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

  PICList 2024 contributors:
o List host: MIT, Site host massmind.org, Top posters @none found
- Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
 

Welcome to www.piclist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .