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ZPSD301 数据表(PDF) 52 Page - STMicroelectronics |
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ZPSD301 数据表(HTML) 52 Page - STMicroelectronics |
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52 / 85 page ![]() PSD3XX Family 49 Figure 25. Timing of 16-Bit Multiplexed Address/Data Bus Using RD, WR (PSD3X2/3X3) 18 36 4 19 DATA VALID CSI/A19 as CSI 12 5 1 7 15 32 32 14 14 6 6 10 9 ADDRESS A ADDRESS B 2 3 8 13 2 16 17 12A 13 20 23 23 ADDRESS A ADDRESS B INPUT INPUT OUTPUT OUTPUT READ CYCLE WRITE CYCLE STABLE INPUT STABLE INPUT Direct (1) PAD Input Multiplexed (2) Inputs DATA IN A0/AD0- A15/AD15 Active Low ALE Active High ALE RD/E/DS as RD BHE/PSEN as BHE Any of PA0-PA7 as I/O Pin Any of PA0-PA7 Pins as Address Outputs Any of PB0-PB7 as I/O Pin 1 3 11 WR/VPP or R/W as WR 32 See referenced notes on page 64. |
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