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IDT7134SA70P Datasheet(PDF) 6 Page - Integrated Device Technology |
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IDT7134SA70P Datasheet(HTML) 6 Page - Integrated Device Technology |
6 / 9 page 6.04 6 IDT7134SA/LA HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM MILITARY AND COMMERCIAL TEMPERATURE RANGES TIMING WAVEFORM OF READ CYCLE NO. 2, EITHER SIDE(1, 3) 2720 drw 09 CE DATAOUT VALID DATA (4) tPD tAOE(4) tACE OE tHZ(2) tLZ(1) tLZ(1) tPU 50% 50% ICC ISB CURRENT tHZ(2) NOTES: 1. Timing depends on which signal is asserted last, OE or CE. 2. Timing depends on which signal is de-asserted first, OE or CE. 3. R/ W = VIH. 4. Start of valid data depends on which timing becomes effective , tAOE, tACE or tAA 5. tAA for RAM Address Access and tSAA for Semaphore Address Access. AC ELECTRICAL CHARACTERISTICS OVER THE OPERATING TEMPERATURE AND SUPPLY VOLTAGE(6) 7134X20 (5) 7134X25 7134X35 Symbol Parameter Min. Max. Min. Max. Min. Max. Unit WRITE CYCLE tWC Write Cycle Time 20 — 25 — 35 — ns tEW Chip Enable to End-of-Write 15 — 20 — 30 — ns tAW Address Valid to End-of-Write 15 — 20 — 30 — ns tAS Address Set-up Time 0 — 0 — 0 — ns tWP Write Pulse Width 15 — 20 — 25 — ns tWR Write RecoveryTime 0 — 0 — 0 — ns tDW Data Valid to End-of-Write 15 — 15 — 20 — ns tHZ Output High-Z Time (1, 2) —15— 15 —20 ns tDH Data Hold Time (3) 0— 0 — 3— ns tWZ Write Enabled to Output in High-Z (1, 2) —15— 15 —20 ns tOW Output Active from End-of-Write (1, 2, 3) 3— 3 — 3— ns tWDD Write Pulse to Data Delay (4) —40— 50 —60 ns tDDD Write Data Valid to Read Data Delay (4, 7) —30— 30 —35 ns NOTES: 2720 tbl 10 1. Transition is measured ±500mV from Low or High-impedance voltage with Output Test Load (Figure 2). 2. This parameter is guaranteed by device characterization, but is not production tested. 3. The specification for tDH must be met by the device supplying write data to the RAM under all operating conditions. Although tDH and tOW values will vary over voltage and temperature, the actual tDH will always be smaller than the actual tOW. 4. Port-to-port delay through RAM cells from writing port to reading port, refer to “Timing Waveform of Write with Port-to-Port Read”. 5. (Commercial only), 0 °C to +70°C temperature range . 6. “X” in part number indicates power rating (SA or LA). 7. tDDD = 35ns for military temperature range. |
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