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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 GQ-3X write problem with ST M27512F1		  New Topic  Reply to Topic
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joseman

2 Posts
Posted - 03/11/2012 :  09:06:02  Show Profile  Reply with Quote
Hi all

I'm trying to write a st M27512F1 without success with a GQ-3X

It's a revision 1.50

I've tried 6.14, 6.11 & 5.03 version of the program

Usb driver 2.0

2 different chips

different speeds

The programmer reads the chip ok.

but always the same error: "write failed, address=0x000000 buffer=0x39, device=0x00"

What i'm doing wrong?

thankyou in advance.

Joseman
Edited by - joseman on 03/11/2012 09:09:29
Reply #1

ZLM

2945 Posts
Posted - 03/12/2012 :  20:20:15  Show Profile  Reply with Quote
Does it ID the chip correctly?

Does the programmer works with onther brand 27512 chip?
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Reply #2

joseman

2 Posts
Posted - 03/13/2012 :  03:44:26  Show Profile  Reply with Quote
Hi

Yes, the id is well recognized

But i believe it's my fault, cause the M27512F1 is an EPROM (not EEPROM)

this kind of chip needs to be UV Erased first if i understand correctly, I bought an UV Eraser from ebay, when it arrive i'll see...

any idea about this? i'm right with this?
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Reply #3

ZLM

2945 Posts
Posted - 03/15/2012 :  10:28:28  Show Profile  Reply with Quote
If your chip has a top glass window, then it needs UV eraser to erase it.
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