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IDT6178S12P Datasheet(PDF) 6 Page - Integrated Device Technology |
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IDT6178S12P Datasheet(HTML) 6 Page - Integrated Device Technology |
6 / 7 page 11.1 6 IDT6178S CMOS StaticRAM 16K (4K x 4-BIT) CACHE-TAG RAM MILITARY AND COMMERCIAL TEMPERATURE RANGE AC ELECTRICAL CHARACTERISTICS (VCC = 5.0V ± 10%, All Temperature Ranges) 6178S10 (1) 6178S12 6178S15 6178S20/25 Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Write Cycle tWC Write Cycle Time 10 — 12 — 15 — 20 — ns tAW Address Valid to End-of-Write 8 — 10 — 12 — 14 — ns tAS Address Set-up Time 0 — 0 — 0 — 0 — ns tWP Write Pulse Width 8 — 10 — 12 — 14 — ns tWR Write Recovery Time 0 — 0 — 0 — 0 — ns tDW Data Valid to End-of-Write 6 — 8 — 10 — 12 — ns tDH Data Hold from Write Time 0 — 0 — 0 — 0 — ns tWHZ(2) Write Enable to Output in High-Z — 5 — 6 — 7 — 9 ns tOW(2) Output Active from End-of-Write 0 — 0 — 0 — 0 — ns NOTES: 2953 tbl 12 1. 0 °C to +70°C temperature range only. 2. This parameter guaranteed with AC load (Figure 3) by device characterization, but is not production tested. TIMING WAVEFORM OF WRITE CYCLE(1,3) NOTES: 1. WE must be HIGH during all address transitions. 2. During this period, I/O pins are in the output state and the input signals must not be applied. 3. OE is HIGH. If OE is LOW during a WE controlled write cycle, the write pulse width must be the greater of tWP or (tWHZ + tDW) to allow the I/O drivers to turn off and data to be placed on the bus for the required tDW. If OE is HIGH during a WE controlled write cycle, this requirement does not apply and the write pulse is the specified tWP. 4. Transition is measured ±200mV from steady state. AC ELECTRICAL CHARACTERISTICS (VCC = 5.0V ± 10%, All Temperature Ranges) 6178S10 (1) 6178S12 6178S15 6178S20/25 Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Clear Cycle tCLPW (2) CLR Pulse Width 12 — 15 — 20 — 25 — ns tCLRC CLR HIGH to WE LOW 5— 5 — 5— 5— ns tPOCL (3) Power on Reset 50 — 60 — 80 — 100 — ns tWECL WE HIGH to Clear HIGH 5 — 5 — 5 — 5 — ns NOTES: 2953 tbl 13 1. 0 °C to +70°C temperature range only. 2. Recommended duty cycle of 10% maximum. 3. This parameter guaranteed with AC load (Figure 3) by device characterization, but is not production tested. ADDRESS tWC tAW DATAOUT DATAIN WE tAS tWP tWR tWHZ tOW (4) tDH DATAIN VALID tDW (4) (4) (4) 2953 drw 10 (2) (2) |
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