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STLC5466 数据表(PDF) 111 Page - STMicroelectronics |
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STLC5466 数据表(HTML) 111 Page - STMicroelectronics |
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111 / 130 page ![]() 111/130 STLC5466 4 MICROPROCESSOR TIMING 4.1 ST9 family; MOD0 = 1, MOD1 = 0, MOD2 = 0 Figure 4-1: ST9 read cycle tx Parameter T min T max Unit t1 Delay ready /Chip Select (if t3 >t1), (30 pF) Delay when immediate access 0 98 ns ns t2 Hold time Chip Select /Data Strobe 14 ns t3 Delay ready /NAS (if t1 >t3), (30 pF) Delay when immediate access 0 98 ns ns t4 Width NAS 20 ns t5 Set up time Address /NAS 9 ns t6 Hold time Address /NAS 9 ns t7 Data valid before ready 0 ns t8 Data bus at high impedance after Data Strobe (30 pF) 0 15 ns t9 Set up time R/W /NAS 15 ns t10 Hold time R/W /Data Strobe 15 ns t11 Width NDS when immediate access 50 ns t12 Delay NDS / NCS 5 ns NCS0/1 NDSACK1 / READY NAS / ALE NDS / NRD AD0/7 R/W / NWR A0/7 t6 t5 t7 t8 t9 D0/7 t10 t3 t4 t1 t11 t2 t12 |
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