All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  AT29C040A and GQ-4X

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by jdtoronto[/i] [br]The AT29C040A devices I have already have code in them and I need to erase them. I run erase from the GUI and I get the response: Erasing... Elapsed time: 0.36 seconds. Erase completed. But when I read the device or do a blank check, it still has data in it: ID check skipped Blank checking... Code Elapsed time: 0.15 seconds. Device blank check failed at address: 0x000000, Read= 0xF3. Blank check failed And the data: F3 ED 38 34 CB 7F 20 61 C3 A8 00 36 34 31 38 30 20 4F 50 20 43 4F 44 45 20 45 52 52 4F 52 0D 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C3 32 08 52 61 6D 20 54 65 73 74 20 46 61 69 6C 20 0D 0A 00 53 65 6C 66 20 54 65 73 74 20 49 6E 20 50 72 6F 67 72 65 73 73 20 0D 0A 00 00 C3 35 08 21 0B 00 18 03 21 3B 00 DD 21 78 00 C3 1C 03 18 FE 50 72 6F 67 72 61 6D 20 43 68 65 63 6B 73 75 6D 20 45 72 72 6F 72 20 0D 0A 50 6C 65 61 73 65 20 72 65 2D 64 6F 77 6E 6C 6F 61 64 0D 0A 00 AF ED 39 36 ED 39 30 ED So it seems the blank check is working. How do I unlock the device so I can erase it? Any body have any clues? John [/quote]    Insert an Image File Check here to include your profile signature.