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CY7C024AV Datasheet(PDF) 13 Page - Cypress Semiconductor |
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CY7C024AV Datasheet(HTML) 13 Page - Cypress Semiconductor |
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13 / 20 page ![]() CY7C024AV/024BV/025AV/026AV CY7C0241AV/0251AV/036AV Document #: 38-06052 Rev. *M Page 13 of 20 Notes 43. CE = HIGH for the duration of the above timing (both write and read cycle). 44. IO0R = IO0L = LOW (request semaphore); CER = CEL = HIGH. 45. Semaphores are reset (available to both ports) at cycle start. 46. If tSPS is violated, the semaphore is definitely obtained by one side or the other, but which side gets 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 IO 0 SEM A 0–A 2 Figure 10. Semaphore Read After Write Timing, Either Side[43] MATCH tSPS A0L–A2L MATCH R/WL SEML A0R–A2R R/WR SEM R Figure 11. Timing Diagram of Semaphore Contention[44, 45, 46] [+] Feedback |
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