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lagaffe97
Reunion Island
4 Posts |
 Posted - 09/21/2015 : 08:43:03
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Hi,
i need help for this am27c256. I can't write it say me write error, adress=0x000000, buffer=0x90 eprom=0xFF. I use gq-4x.
Blank check is ok, read is ok, but fail to write. Eprom erased by UV. Before erasing, read wa ok too. When try to write, vcc light red stays on. Any idea? Thanks |
Edited by - lagaffe97 on 09/21/2015 08:44:06
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| Reply #1
lagaffe97
Reunion Island
4 Posts |
Posted - 09/23/2015 : 05:57:31
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heu nobody has experienced this problem before?
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| Reply #2
ZLM
2945 Posts |
Posted - 09/25/2015 : 07:06:51
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Try followings:
1. use slower speed.
2. check the chip ID, you should get correct ID from software in your case.
If you can get correct ID, then the programmer should be fine and the problem may come from the chip.
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| Reply #3
lagaffe97
Reunion Island
4 Posts |
Posted - 09/25/2015 : 07:24:26
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Hi ZLM,
I've used slower speed with no result.
Id is correct too, i think too the problem comes from the chip! I'm waiting new chip and i will tell you if ok.
Thanks |
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| Reply #4
lagaffe97
Reunion Island
4 Posts |
Posted - 10/18/2015 : 20:46:32
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Some news...
Have received new chip and try to burn... same problem, it failed randomly at different sector!
A friend of mine let me use his batronix and it burned with no problem!
Seems my gq-4x have a problem because same problem writing M28f512...
Failed to write a 95080 too now...
Need to buy new programmer, but i don't understand why it broke down i used it only few times.
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Topic |
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Problem with AM27C256
