Quote Originally Posted by hankshone View Post
Thanks Paul for your shared codes!!! It is great.
I did the same test, but used PIC16LF877(3.0V) and FM25V10(3.0V,1Mbit). I think the communication is the same, only with some minor modifications. I spent almost one day on it,still get no result yet.... Can you help me to check if there is anything wrong with it?
Thanks!
One Mbit? Now I have chip envy.

It looks like you need to add "FM_CS=1" right before the line "IF Disp = 1 THEN". The F-RAM never gets un-selected after the read.

It couldn't be that simple, could it? If that's not it please provide detail about what it is and is not doing correctly. If all else fails make sure it works using SHIFTIN and SHIFTOUT. If that fails as well use an o-scope to confirm ALL of the pins on the F-RAM are in their proper states.

Best Regards,
Paul