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IDT70T16A20BFI Datasheet(PDF) 10 Page - Integrated Device Technology |
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IDT70T16A20BFI Datasheet(HTML) 10 Page - Integrated Device Technology |
10 / 18 page 6.42 IDT70T16/5L High-Speed 2.5V 16/8K x 9 Dual-Port Static RAM Industrial and Commercial Temperature Ranges 10 PRELIMINARY Timing Waveform of Semaphore Read after Write Timing, Either Side(1) Timing Waveform of Semaphore Write Condition(1,3,4) SEM 5663 drw 09 tAW tSOP I/O VALID ADDRESS tSAA R/W tWR tOH tACE VALID ADDRESS DATAIN VALID DATAOUT tDW tDH tAS tAOE Read Cycle Write Cycle A0-A2 OE VALID(2) tSWRD tEW tWP SEM"A" 5663 drw 10 tSPS MATCH R/ W"A" MATCH A0"A"-A2"A" SIDE "A" (2) SEM"B" R/ W"B" SIDE "B" (2) A0"B"-A2"B" NOTES: 1. CE = VIH for the duration of the above timing (both write and read cycle). 2. “DATAOUT VALID” represents all I/O's (I/O0-I/O8) equal to the semaphore value. NOTES: 1. DOR = DOL =VIH, CER = CEL =VIH. 2. All timing is the same for left and right ports. Port“A” may be either left or right port. “B” is the opposite port from “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 obtain the semaphore flag. |
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