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jroesner
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Canada
10 Posts |
Posted - 02/19/2007 : 09:12:23
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Im having a wonderful (sic) time trying to get 4meg eproms to program. I have tried about 20 of them so far, 27C040, 27040, 27c4000's and they all fail. I can program anything else, 2meg, 1meg 32,64,128K, just seem to be a problem with 4 meg.
Tried on 2 different PC's as well. Using external voltage regulator.
Any help is greatly appreciated.
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Reply #1
jroesner
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Canada
10 Posts |
Posted - 02/19/2007 : 09:15:04
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I should add, that it does make an attempt at programming them, and it can read them just fine.. |
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Reply #2
jroesner
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Canada
10 Posts |
Posted - 02/19/2007 : 13:27:49
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Update: I managed to burn 2 of them by - setting the type to 27040 (not C) - Jacking up the voltage to 15V
Still not perfect though. |
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