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CY7C024AV-25AXC Datasheet(PDF) 13 Page - Cypress Semiconductor |
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CY7C024AV-25AXC Datasheet(HTML) 13 Page - Cypress Semiconductor |
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13 / 23 page ![]() CY7C008V/009V CY7C018V/019V Document Number: 38-06044 Rev. *E Page 13 of 23 Notes 36. CE = HIGH for the duration of the above timing (both write and read cycle). 37. I/O0R = I/O0L = LOW (request semaphore); CER = CEL = HIGH. 38. Semaphores are reset (available to both ports) at cycle start. 39. If tSPS is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable. Switching Waveforms (continued) tSOP tSAA VALID ADRESS VALID ADRESS tHD DATAIN VALID DATAOUT VALID tOHA tAW tHA tACE tSOP tSCE tSD tSA tPWE tSWRD tDOE WRITE CYCLE READ CYCLE OE R/W I/O 0 SEM A0–A2 Semaphore Read After Write Timing, Either Side[36] MATCH tSPS A0L–A2L MATCH R/WL SEML R/WR SEMR Timing Diagram of Semaphore Contention[37, 38, 39] A0R–A2R [+] Feedback |
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