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IDT70121S Datasheet(PDF) 9 Page - Integrated Device Technology |
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IDT70121S Datasheet(HTML) 9 Page - Integrated Device Technology |
9 / 12 page 6.10 9 IDT 70121/70125S/L HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT COMMERCIAL TEMPERATURE RANGE TIMING WAVEFORM OF BUSY ARBITRATION CONTROLLED BY CE CE CE CE CE TIMING(1) tBDC ADDR L and R BUSYL CER tAPS tBAC ADDRESSES MATCH CEL 2654 drw 12 NOTES: 1. All timing is the same for left and right ports. Port 'A' may be either left or right port. Port 'B' is the opposite from port 'A'. 2. If tAPS is not satisified, the BUSY will be asserted on one side or the other, but there is no guarantee on which side BUSY will be asserted (70121 only). TIMING WAVEFORM OF BUSY ARBITRATION CONTROLLED BY ADDRESS (1) tBAA ADDR'A' BUSY'B' ADDRESSES MATCH ADDRESSES DO NOT MATCH tRC OR tWC tAPS tBDA ADDR'B' 2654 drw 13 NOTES: 1. All timing is the same for left and right ports. Port 'A' may be either left or right port. Port 'B' is the opposite from port 'A'. 2. If tAPS is not satisified, the BUSY will be asserted on one side or the other, but there is no guarantee on which side BUSY will be asserted (70121 only). AC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE RANGE(1) 70121X25 70121X35 70121X45 70121X55 70125X25 70125X35 70125X45 70125X55 Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Interrupt Timing tAS Address Set-up Time 0 — 0 — 0 — 0 — ns tWR Write Recovery Time 0 — 0 — 0 — 0 — ns tINS Interrupt Set Time — 25 — 25 — 40 — 45 ns tINR Interrupt Reset Time — 25 — 35 — 40 — 45 ns NOTE: 2654 tbl 11 1. "X" in part numbers indicates power rating (S or L). |
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