voltage levels of rd,wr,db0-7 on 5v 3433

brigg · ‎2008-11-24

Posted on November 25, 2008 at 08:48

brigg · ‎2011-05-17

Posted on May 17, 2011 at 11:52

I can not find anywhere that will tell me what the voltage levels of the data buss ale wr and rd signal in a 5 volt system

Can anyone help me

tim5 · ‎2011-05-17

Posted on May 17, 2011 at 11:52

These are MCU signals. The MCU is 3.3V on all models, it is only the PSD that can be 5V. Therefore these are 3.3V levels, ie 0.6V - 2.4V.