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tDOE and tACE difference | Cypress Semiconductor

tDOE and tACE difference

Summary: 0 Replies, Latest post by SmartPSoC on 13 Dec 2013 04:50 AM PST
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SmartPSoC's picture
Cypress Employee
68 posts

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.



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



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.







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