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

 All Forums
 MCUmall Forums
 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 AT29C020 lock/unlock		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

DarkHelmet

USA
6 Posts
Posted - 11/25/2018 :  23:10:18  Show Profile  Reply with Quote
I have a 29C020 which the lower part is locked for writing. I have the GQ-4X with the latest software which says this is a supported part.


I've used the lock dialog to unlock this chip, and it still says it's locked, even trying at the slowest write option.

Has anyone else seen this?
Edited by - DarkHelmet on 11/26/2018 05:42:30
Reply #1

anniel

2572 Posts
Posted - 11/26/2018 :  05:00:39  Show Profile  Reply with Quote
quote:
Originally posted by DarkHelmet

I have a 27C020 which the lower part is locked for writing. I have the GQ-4X with the latest software which says this is a supported part.


I've used the lock dialog to unlock this chip, and it still says it's locked, even trying at the slowest write option.

Has anyone else seen this?


The AT27C020 has no provision to be locked nor unlocked much less half of the chip.
You do know this is an OTP device, right?
Go to Top of Page
Reply #2

DarkHelmet

USA
6 Posts
Posted - 11/26/2018 :  05:44:19  Show Profile  Reply with Quote
quote:
Originally posted by anniel
The AT27C020 has no provision to be locked nor unlocked much less half of the chip.
You do know this is an OTP device, right?


Sorry, I posted this very late, and I meant to say 29C020. I've updated the subject to reflect this.
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 0.06 sec. Snitz Forums 2000