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AS7C33512PFD18A Datasheet(PDF) 7 Page - Alliance Semiconductor Corporation |
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AS7C33512PFD18A Datasheet(HTML) 7 Page - Alliance Semiconductor Corporation |
7 / 20 page ® AS7C33512PFD18A 12/1/04; v.1.3 Alliance Semiconductor 7 of 20 Synchronous truth table[4] CE01 1 X = don’t care, L = low, H = high CE1 CE2 ADSP ADSC ADV WRITE[2] 2 For WRITE, L means any one or more byte write enable signals (BWa or BWb) and BWE are LOW or GWE is LOW. WRITE = HIGH for all BWx, BWE, GWE HIGH. See "Write enable truth table (per byte)," on page 6 for more information. OE Address accessed CLK Operation DQ HXXX L X X X NA L to H Deselect Hi −Z L L X L X X X X NA L to H Deselect Hi −Z L L X H L X X X NA L to H Deselect Hi −Z L X H L X X X X NA L to H Deselect Hi −Z L X H H L X X X NA L to H Deselect Hi −Z L H L L X X X L External L to H Begin read Q L H L L X X X H External L to H Begin read Hi −Z L H L H L X H L External L to H Begin read Q L H L H L X H H External L to H Begin read Hi −Z XXXHH L H L Next L to H Continue read Q XXXHH L H H Next L to H Continue read Hi −Z XXXHH H H L Current L to H Suspend read Q XXXHH H H H Current L to H Suspend read Hi −Z HXXXH L H L Next L to H Continue read Q HXXXH L H H Next L to H Continue read Hi −Z HXXXH H H L Current L to H Suspend read Q HXXXH H H H Current L to H Suspend read Hi −Z L H L H L X L X External L to H Begin write D3 3 For write operation following a READ, OE must be high before the input data set up time and held high throughout the input hold time 4 ZZ pin is always Low. XXXHH L L X Next L to H Continue write D HXXXH L L X Next L to H Continue write D XXXHH H L X Current L to H Suspend write D HXXXH H L X Current L to H Suspend write D |
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