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WDT timeout to 30 seconds

 
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Alejandro



Joined: 25 Mar 2011
Posts: 7

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WDT timeout to 30 seconds
PostPosted: Mon Apr 18, 2011 8:20 pm     Reply with quote
Hi, I need to configure the WDT timeout to 30 seconds, it is possible?
How I can do this, I am using the PIC18F452, 20Mhz
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Apr 18, 2011 9:35 pm     Reply with quote
The maximum WDT timeout is 2.3 seconds (nominal) with the 18F452.

If you upgrade to the improved version of that PIC, which is the 18F4520,
then you can go up to 131 seconds timeout for the WDT.
temtronic



Joined: 01 Jul 2010
Posts: 9247
Location: Greensville,Ontario

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PostPosted: Tue Apr 19, 2011 5:23 am     Reply with quote
Or you could add a 74123,R,C for your own hardware WDT.It'll take a couple of pins but you program it for whatever time you want.
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