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maxhohenlohe

1 Posts
Posted - 08/15/2014 :  11:02:43  Show Profile  Reply with Quote
Has anyone had any problems with the AT25020NB that is used in several GM instrument clusters?

Selecting AT25020 doesn't work at all and AT25020A reads fine, but doesn't seem to write correctly.

Original Dump From Chip
1C F4 FF FF 84 FF FF FF FF FF FF FF 1C F4 FF FF 84 FF FF FF FF FF FF FF 1C F4 FF FF 84 FF FF FF FF FF FF FF

Replacement
0D D6 FF FF FF FF FF FF FF FF FF F8 0D D6 FF FF FF FF FF FF FF FF FF F8 0D D6 FF FF FF FF FF FF FF FF FF F8

Read after failed verification
0D F4 FF FF FF FF FF FF FF FF FF FF 0D F4 FF FF FF FF FF FF FF FF FF FF 0D F4 FF FF FF FF FF FF FF FF FF FF
Edited by - maxhohenlohe on 08/15/2014 11:03:08
Reply #1

ZLM

2937 Posts
Posted - 08/19/2014 :  14:54:48  Show Profile  Reply with Quote
try to use slower speed and see if it works.
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