0 Replies Latest reply on Dec 13, 2013 4:50 AM by resh

    tDOE and tACE difference

    resh

      For Async SRAM, there are two timing parameters assosiated with read cycle, tDOE and tACE .  tDOE  is the maximum time from  /OE Low to data valid and tACE  is the maximum  time from /CE Low to data valid on the bus during a read operation.

         

             a)          If you assert /CE at least (tACE - tDOE) time ahead of /OE , data will come at tDOE from the falling edge of /OE.     

       

         

          

                 

            b)          If you assert both /CE and /OE together, it will take tACE time from /CE or /OE falling edge for valid data to come on the bus.    

      Hope this clarifies the difference between the two parameters.