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STV0680B 数据表(PDF) 21 Page - STMicroelectronics |
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STV0680B 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 63 page ![]() Version 3.4 21/63 STV0680B + VV6444/6410/6500 STV0680B hardware interfaces Figure 5 : SDRAM read timing (16Mbit device, burst read) Figure 6 : SDRAM write timing (16Mbit device, burst write) DCLK Command DQM A0-9,BA A10 ACTIVE READ NOP PRECHARGE NOP ROW COLUMN ROW DOUT M DOUT M + 1 DOUT M + 2 DOUT M + 3 DQ READ Latency tCK tRCD tRC CKE tRAS DQ sample DQ sample DQ sample DQ sample tRP tCMS tCMH tAS tAH tL tH tCMS tCMH tAC tOH DCLK Command DQM A0-9,BA A10 ACTIVE WRITE NOP PRECHARGE NOP ROW COLUMN ROW DIN M DIN M + 1 DIN M + 2 DIN M + 3 DQ tCK tRCD tRC CKE tRAS tRP tCMS tCMH tAS tAH tL tH tCMS tCMH tDS tDH |
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