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IC61C256AH-20NI Datasheet(PDF) 7 Page - Integrated Circuit Solution Inc |
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IC61C256AH-20NI Datasheet(HTML) 7 Page - Integrated Circuit Solution Inc |
7 / 9 page IC61C256AH Integrated Circuit Solution Inc. 7 AHSR010-0D 4/19/2002 AC WAVEFORMS WRITE CYCLE NO. 1 (WE Controlled) (1,2 ) DATA UNDEFINED t WC VALID ADDRESS t SCE t PWE1 t PWE2 t AW t HA HIGH-Z t HD t SA t HZWE ADDRESS CE WE DOUT DIN DATAIN VALID t LZWE t SD WRITE CYCLE SWITCHING CHARACTERISTICS(1,2) (Over Operating Range) -10 -12 -15 -20 -25 Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit tWC Write Cycle Time 10 — 12 — 15 — 20 — 25 — ns tSCE CE to Write End 9 — 10 — 10 — 13 — 15 — ns tAW Address Setup Time 9 — 10 — 12 — 15 — 20 — ns to Write End tHA Address Hold 0 — 0 — 0 — 0 — 0 — ns from Write End tSA Address Setup Time 0 — 0 — 0 — 0 — 0 — ns tPWE(4) WE Pulse Width 8 — 8 — 10 — 13 — 15 — ns tSD Data Setup to Write End 7 — 7 — 9 — 10 — 12 — ns tHD Data Hold from Write End 0 — 0 — 0 — 0 — 0 — ns tHZWE(2) WE LOW to High-Z Output — 6 — 6 — 7 — 8 — 10 ns tLZWE WE HIGH to Low-Z Output 0 — 0 — 0 — 0 — 0 — ns Notes: 1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V and output loading specified in Figure 1a. 2. Tested with the load in Figure 1b. Transition is measured ±500 mV from steady-state voltage. Not 100% tested. 3. The internal write time is defined by the overlap of CE LOW and WE LOW. All signals must be in valid states to initiate a Write, but any one can go inactive to terminate the Write. The Data Input Setup and Hold timing are referenced to the rising or falling edge of the signal that terminates the Write. 4. Tested with OE HIGH. |
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