MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Save Password
Forgot your Password?

 All Forums
 MCUmall Forums
 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 PLCC44 ST M27C1024
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  


1 Posts

Posted - 03/27/2016 :  15:36:55  Show Profile  Reply with Quote

I am having a problem writing this M27C1024 chips.

Bought 10 NEW EMPTY ones and I can read the original with the ADP-054.

When I try to flash the empty ones I always get error like :

Write failed, Address=0x000200, Buffer=0xB1 Device=0xFF
Write failed

Tried another chip, same error.
Cleaned all contacts.
Tested programmer for voltage etc.

And as I said, I can read the original just fine.

Blank check does not help for s%%% as it tells me chip is blank even without the adapter attached to the programmer.

Can see many people had problems with this chips but nobody posted a solution.

Any help appreciated.
Reply #1


2529 Posts

Posted - 03/27/2016 :  15:58:48  Show Profile  Reply with Quote
Go to Top of Page
Reply #2


2939 Posts

Posted - 03/28/2016 :  22:16:25  Show Profile  Reply with Quote
Looks like the address A9 has problem.

Check A9 pin voltage while reading the chip at slowest speed. The A9 pin should have voltage changing while reading.

The A9 pin you can find from software menu Test H/W-> Test H/W pinout:

Image Insert:

57012 bytes
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.16 sec. Snitz Forums 2000