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70V08S15PFGI Datasheet(PDF) 11 Page - Integrated Device Technology |
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70V08S15PFGI Datasheet(HTML) 11 Page - Integrated Device Technology |
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11 / 21 page  11 IDT70V08S/L High-Speed 3.3V 64K x 8 Dual-Port Static RAM Industrial and Commercial Temperature Ranges Timing Waveform of Semaphore Read after Write Timing, Either Side(1) NOTES: 1. DOR = DOL = VIL, CEL = CER = VIH (Refer to Chip Enable Truth Table). 2. All timing is the same for left and right ports. Port "A" may be either left or right port. "B" is the opposite from port "A". 3. This parameter is measured from R/W"A" or SEM"A" going HIGH to R/W"B" or SEM"B" going HIGH. 4. If tSPS is not satisfied, there is no guarantee which side will be granted the semaphore flag. Timing Waveform of Semaphore Write Contention(1,3,4) NOTES: 1. CE = VIH for the duration of the above timing (both write and read cycle) (Refer to Chip Enable Truth Table). 2. DATAOUT VALID represents I/O0-7 equal to semaphore value. SEM 3740 drw 09 tAW tEW tSOP I/O VALID ADDRESS tSAA R/ W tWR tOH tACE VALID ADDRESS DATA VALID IN DATAOUT tDW tWP tDH tAS tSWRD tAOE Read Cycle Write Cycle A0-A2 OE VALID(2) SEM"A" 3740 drw 10 tSPS MATCH R/ W"A" MATCH A0"A"-A2"A" SIDE "A" (2) SEM"B" R/ W"B" A0"B"-A2"B" SIDE "B" (2) |
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