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Fuse Settings 18F26J50

 
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rwskinner



Joined: 08 Dec 2006
Posts: 125
Location: Texas

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Fuse Settings 18F26J50
PostPosted: Mon Jul 12, 2010 8:06 am     Reply with quote
I'm getting a little lost in the 18F26J50 datasheet and I'm looking for clarification. All the "normal" fuses such as Brownout and Power On timer have been changed to the Deep Sleep equiv.

I'm running a bootloader and I'm trying to avoid the program memory becoming corrupt as I just learned in a previous thread. Does using the DSBOR still help me even if I'm not using Deep Sleep?

Richard
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Mon Jul 12, 2010 12:10 pm     Reply with quote
The 18F26J50 data sheet says this:
Quote:

4.4 Brown-out Reset (BOR)

The “F” devices in the PIC18F46J50 family incorporate
two types of BOR circuits: one which monitors VDDCORE
and one which monitors VDD. Only one BOR circuit can be
active at a time.

When in normal Run mode, Idle or normal Sleep modes,
the BOR circuit that monitors VDDCORE is active.

As I understand it, the normal Brownout function is always active if
the chip is running off its internal regulator (which will be used if you
have the 18F26J50). The DSBOR fuse only has meaning if you use
Deep Sleep mode. So leave it off.

This assumes you are using the 18F26J50, and not the "LF" version.
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