All Forums  MCUmall Forums  True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)  M2716AFI Eproms Info

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 infraredgr@gmail.com[/i] [br]Some info about this eproms: If you ever buy this eproms you must know that the programming voltage is set at 21V by the manufacturer. But if you try to program them using that voltage the success will be about 10 %. The programming voltage of 21V is printed on top of the eprom chip. The solution i found is to increase the programming voltage to 25V and everything is OK. I successfully tried 27 eproms of this type and all had errors with 21V but success with 25V. I tried to erase 5 of them and reprogram and all is OK because i was afraid that 25V will destroy the eproms. Reprogramming is just fine. Regards Michael [/quote]    Insert an Image File Check here to include your profile signature.