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T O P I C R E V I E W
Posted - 11/29/2015 : 21:20:02 I just wanted to post some more corrections I made to the devices.txt file. Specifically for the 27C series of EPROMs.
I discovered this because I had a few EPROMs that didn't program properly with the voltages outside of the manufacturers specified range.
First off the generic devices (27C64, 27C128, etc) without a manufacturer specified:
The 27C256 had the wrong VPP 12 volts instead of 12.7. The specs in every datasheet I've read specify 12.7 volts +- 0.25 volts 12 volts is way out of tolerance. It also had the wrong WVCC 5.5 volts instead of the standard 6.2 volts.
The other generic devices simply had the wrong WVCC 5.5 volts instead of 6.2 volts which I corrected.