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???
07/12/10 12:36
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#177255 - yes, unless
Responding to: ???'s previous message
Should I use a voltage level shifter?
yes, unless the signals are very slow. "resistive conversion" "5V tolerant with pullup" and such do not reliably transfer fast signals.

level shifting is discussed in http://www.8052.com/forum/read/177176

Erik

List of 8 messages in thread
TopicAuthorDate
Connecting AT89S52 to a 2.85v signal            01/01/70 00:00      
   So that's OK, then!            01/01/70 00:00      
      Input current too high?            01/01/70 00:00      
         give two values for the GPS            01/01/70 00:00      
            Values            01/01/70 00:00      
               Level Shifter?            01/01/70 00:00      
                  yes, unless            01/01/70 00:00      
                     "very slow" ?            01/01/70 00:00      

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