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PSD311 데이터시트(PDF) 47 Page - STMicroelectronics |
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PSD311 데이터시트(HTML) 47 Page - STMicroelectronics |
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47 / 85 page ![]() 18.9 Timing Diagrams for all PSD3XX Parts Figure 20. Timing of 8-Bit Multiplexed Address/Data Bus Using RD, WR (PSD3X1) 18 DATA VALID CSI/A19 as CSI DATA IN 8 12 1 7 15 32 32 14 14 6 6 10 9 ADDRESS A ADDRESS B 2 3 4 13 32 5 2 16 17 12A 19 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 A0/AD0- A7/AD7 Active Low ALE Active High ALE RD/E as RD BHE/PSEN as PSEN WR/VPP or RW as WR 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 36 See referenced notes on page 64. PSD3XX Family 44 |
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