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HPC167064 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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HPC167064 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 34 page ![]() 20 MHz AC Electrical Characteristics (Continued) (See Notes 1 and 4 and Figures 1 thru 5 ) VCC e 5V g5% TA eb55 Cto a125 C for HPC167064 and VCC e 5V g10% TA e 0 Cto a70 C for HPC467064 (Continued) Symbol and Formula Parameter Min Max Units Notes tDC1ALER Delay from CKI Rising Edge to ALE Rising Edge 0 35 ns (Notes 1 2) tDC1ALEF Delay from CKI Rising Edge to ALE Falling Edge 0 35 ns (Notes 1 2) tDC2ALER e tC a 20 Delay from CK2 Rising Edge to ALE Rising Edge 45 ns tDC2ALEF e tC a 20 Delay from CK2 Falling Edge to ALE Falling Edge 45 ns tLL e tC b 9 ALE Pulse Width 41 ns tST e tC b 7 Setup of Address Valid before ALE Falling Edge 18 ns tVP e tC b 5 Hold of Address Valid after ALE Falling Edge 20 ns tARR e tC b 5 ALE Falling Edge to RD Falling Edge 20 ns tACC e tC a WS b 55 Data Input Valid after Address Output Valid 145 ns tRD e tC a WS b 65 Data Input Valid after RD Falling Edge 85 ns tRW e tC a WS b 10 RD Pulse Width 140 ns tDR e tC b 15 Hold of Data Input Valid after RD Rising Edge 0 60 ns tRDA e tC b 15 Bus Enable after RD Rising Edge 85 ns tARW e tC b 5 ALE Falling Edge to WR Falling Edge 45 ns tWW e tC a WS b 15 WR Pulse Width 160 ns tV e tC a WS b 5 Data Output Valid before WR Rising Edge 145 ns tHW e tC b 5 Hold of Data Valid after WR Rising Edge 20 ns tDAR e tC a WS b 50 Falling Edge of ALE to Falling Edge of RDY 75 ns tRWR e tC RDY Pulse Width 100 ns 4 |
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