18F8722 INC and BAS

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- 19th May 2008, 06:57
George

18F8722 INC and BAS

I ordered some 18F8720, the supplier didn't have any and gave me the 8722 instead, just looking, I have PBP2.42 and it doesn't have the 8722 listed, just the 8720. Does anyone know where I can get them from? Can I just make a new file from the 8720 and rename it?

Cheers in advance
- 19th May 2008, 07:55
mackrackit

Looks like it is past time for you to up grade.
It is in the newer versions.
- 19th May 2008, 13:55
skimask

Quote:

Originally Posted by George

I ordered some 18F8720, the supplier didn't have any and gave me the 8722 instead, just looking, I have PBP2.42 and it doesn't have the 8722 listed, just the 8720. Does anyone know where I can get them from? Can I just make a new file from the 8720 and rename it?

Cheers in advance

The PIC18F8720 had problems running above 4Mhz, but only in certain situations. It's all in the errata sheets.
The '8722 is it's "replacement". Does the same job, with enhancements...
- 20th May 2008, 11:24
Dave

skimask, I use 18F8720's for my depth and temperature display unit and have had no problems running them above 4 Mhz. I run them at 24 Mhz. as they will not run at 40.

Dave Purola,
N8NTA
- 20th May 2008, 12:11
Charles Linquis

You can just rename the files and your '8720 program will run in an '8722.
- 20th May 2008, 13:44
skimask

Quote:

Originally Posted by Dave

skimask, I use 18F8720's for my depth and temperature display unit and have had no problems running them above 4 Mhz. I run them at 24 Mhz. as they will not run at 40.

The errata sheet doesn't say the '8720 fails under ALL conditions above 4Mhz. It just says 'under certain circumstances'. Apparently, I was able to fullfill those 'circumstances' in one of my projects and make it die at 10Mhz, but ran just fine at 4Mhz. Switched to the '8722, no problems.