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IS42S32800B-6BL Datasheet(PDF) 10 Page - Integrated Silicon Solution, Inc |
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IS42S32800B-6BL Datasheet(HTML) 10 Page - Integrated Silicon Solution, Inc |
10 / 62 page 10 Integrated Silicon Solution, Inc. — 1-800-379-4774 Rev. B 05/24/06 ISSI® IS42S32800B READ A NOP NOP NOP NOP WRITE B NOP NOP DQM COMMAND DQ’s NOP DOUT A DINB 2 DINB 1 DINB 0 Must be Hi-Z before the Write Command : "H" or "L" CLK T0 T2 T1 T3 T4 T5 T6 T7 T8 CLK DQM COMMAND NOP NOP NOP NOP NOP BANKA ACTIVAT E DIN A0 DIN A1 DIN A2 DIN A3 1 Clk Interval CAS# latency=2 READ A WRITEA : "H" or "L" NOP T0 T2 T1 T3 T4 T5 T6 T7 T8 tCK2, DQs CLK DQM COMMAND NOP READ A NOP NOP NOP NOP DIN B0 DIN B1 DIN B2 DIN B3 CAS# latency=2 NOP NOP : "H" or "L" tCK2, DQ’s T0 T2 T1 T3 T4 T5 T6 T7 T8 WRITEB tCK2, DQs Read to Write Interval (Burst Length = 4,CAS#Latency =3) Read to Write Interval (Burst Length = 4,CAS#Latency =2) Read to Write Interval (Burst Length = 4,CAS#Latency =2) A read burst without the auto precharge function may be interrupted by a BankPrecharge/ PrechargeAll command to the same bank.The following figure shows the optimum time that BankPrecharge/PrechargeAll command is issued in different CAS#latency. |
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