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C161PI 数据表(PDF) 66 Page - Infineon Technologies AG |
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C161PI 数据表(HTML) 66 Page - Infineon Technologies AG |
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66 / 82 page ![]() &3, Data Sheet 64 1999-07 AC Characteristics Demultiplexed Bus (Standard Supply Voltage Range) (Operating Conditions apply) ALE cycle time = 4 TCL + 2 W A + WC + WF (80 ns at 25 MHz CPU clock without waitstates) Parameter Symbol Max. CPU Clock = 25 MHz Variable CPU Clock 1 / 2TCL = 1 to 25 MHz Unit min. max. min. max. ALE high time W 5 CC 10 + W A – TCL - 10 + W A –ns Address setup to ALE W 6 CC 4 + W A – TCL - 16 + W A –ns ALE falling edge to RD, WR (with RW-delay) W 8 CC 10 + W A – TCL - 10 + W A –ns ALE falling edge to RD, WR (no RW-delay) W 9 CC -10 + W A –-10 + W A –ns RD, WR low time (with RW-delay) W 12 CC 30 + W C – 2TCL - 10 + W C –ns RD, WR low time (no RW-delay) W 13 CC 50 + W C – 3TCL - 10 + W C –ns RD to valid data in (with RW-delay) W 14 SR – 20 + W C – 2TCL - 20 + W C ns RD to valid data in (no RW-delay) W 15 SR – 40 + W C – 3TCL - 20 + W C ns ALE low to valid data in W 16 SR – 40 + W A + WC – 3TCL - 20 + W A + WC ns Address to valid data in W 17 SR – 50 + 2 W A + WC – 4TCL - 30 + 2 W A + WC ns Data hold after RD rising edge W 18 SR 0 – 0–ns Data float after RD rising edge (with RW-delay 1)) W 20 SR – 26 + 2 W A + WF 1) – 2TCL - 14 + 22 W A + W F 1) ns Data float after RD rising edge (no RW-delay 1)) W 21 SR – 10 + 2 W A + WF 1) – TCL - 10 + 22 W A + W F 1) ns Data valid to WR W 22 CC 20 + W C – 2TCL - 20 + W C –ns |
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