EZoFlash форум

Hi, just a quick word to say that I successfully burnt a bunch of those Atmel OTP chips.

Here are the settings I used:

tWP=100.0uS
tWC=60.0uS

They all passed !

(The only one that didn't pass was with tWC=20.uS wich is the default, then I upped tWC and it was just fine)

Unfortunatly you cannot overwrite "One Time Programmable" chips, as their name tells it. I tried but in vain. I think voltages are good since i burned "normal" 27c4001 and 27c1000 without any trouble. Sure, checking the voltage myself won't kill me but I don't expect any trouble since it works well ...

Hi, I'am back on this subject as I am in a great need of theses chips now. The specs says that the write pulse should be 100uS (+/- 5%). Obviously that was the trouble. The default settings for the windows programmer are: tWP=140uS tWC=20uS So for sure tWP has to be set to 100uS. Question is what va...

I don't remember exactly, it is the standard error when a word is written but the error check reading on it just after is bad.

Hi I got a few samples from Atmel (DIP format), unfortunatly my two attempts to program them were incomplet. It worked up to a third or a quarter of the memory space then i got the error message (from memory) saying the buffer was not the same that the chip read. The part that is written is ok and c...