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AS4LC2M8S0 데이터시트(PDF) 21 Page - Alliance Semiconductor Corporation |
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AS4LC2M8S0 데이터시트(HTML) 21 Page - Alliance Semiconductor Corporation |
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21 / 29 page ![]() ® AS4LC2M8S1 AS4LC1M16S1 5/21/01; v.1.1 Alliance Semiconductor P. 21 of 29 Burst stop command waveform read cycle write cycle (BL = 8) Precharge termination A Precharge command terminates a burst read/write operation during the read cycle. The same bank can be activated after meeting tRP. If an RD-burst is terminated, o/p will go to High Z after the number of cycles = CAS latency. read cycle (CL = 1) read cycle (CL = 2) read cycle (CL = 3) CLK CMD DQ (CL = 1) DQ (CL = 2) DQ (CL = 3) Read data Burst stop Q0 Q1 Q2 Q0 Q1 Q2 Q0 Q1 Q2 tT tOH CLK CMD DQ Burst stop Write data (CL = 1,2,3) DQ D1 D2 D3 CLK CMD DQ Read data PRE Q0 Q1 Q2 Q3 tRP ACT CLK CMD DQ Read data Q0 Q1 Q2 PRE ACT Q3 tRP tROH (CL = 2) CLK CMD DQ Read data PRE ACT Q0 Q1 Q2 tROH (CL = 3) Q3 tRP |
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