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SAE81C52 Datasheet(PDF) 8 Page - Siemens Semiconductor Group |
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SAE81C52 Datasheet(HTML) 8 Page - Siemens Semiconductor Group |
8 / 10 page ![]() SAE 81C52 Semiconductor Group 8 AC Characteristics T A = – 40 to 110 °C; VDD = 4.5 to 5.5 V; VSS = 0 V Parameter Symbol Limit Values Unit min. max. ALE pulse width ALE low before RD low RD high before ALE high ALE low before WR low WR high before ALE high t LHLL t LLRL t RHLH t LLWL t WHLH 100 50 18 50 18 ns ns ns ns ns Address setup before ALE Address hold after ALE WR or RD pulse width t AVLL t LLAX t WLWH 18 30 250 ns ns ns Data setup before WR Data hold after WR Data hold after RD t QVWH t WHQX t RHDX 50 18 90 ns ns ns Chip select (2, 3) before RD, WR Chip select (2, 3) after RD, WR Chip select 1 before ALE Chip select 1 after RD, WR t CS t SC t CSLH t CSWH 50 18 20 50 ns ns ns ns Output delay time t RLDV 200 ns Input capacitance to V SS (for each input) C I 10 pF |
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