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EEPROM data showing FF after making 00.

 
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Dec 24, 2007 1:09 am     Reply with quote
MPLAB has a setting to preserve the existing values of the data EEPROM
when you program the PIC with the ICD2.

Look in this menu in MPLAB to find the checkbox for the setting:
Quote:

Programmer menu
- Settings
--Program tab
--- Preserve EEPROM on Program box
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Mon Dec 24, 2007 6:45 am     Reply with quote
As a note:
When an (E)EPROM is cleared you have to check the datasheet for the default value. Most types do read all 'FF' and only a few types do read '0' after clearing.
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