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C161PI Scheda tecnica(PDF) 69 Page - Infineon Technologies AG |
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C161PI Scheda tecnica(HTML) 69 Page - Infineon Technologies AG |
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69 / 82 page ![]() &3, Data Sheet 67 1999-07 AC Characteristics Demultiplexed Bus (Reduced Supply Voltage Range) (Operating Conditions apply) ALE cycle time = 4 TCL + 2 W A + WC + WF (100 ns at 20 MHz CPU clock without waitstates) Parameter Symbol Max. CPU Clock = 20 MHz Variable CPU Clock 1 / 2TCL = 1 to 20 MHz Unit min. max. min. max. ALE high time W 5 CC 11 + W A – TCL - 14 + W A –ns Address setup to ALE W 6 CC 5 + W A – TCL - 20 + W A –ns ALE falling edge to RD, WR (with RW-delay) W 8 CC 15 + 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 34 + W C – 2TCL - 16 + W C –ns RD, WR low time (no RW-delay) W 13 CC 59 + W C – 3TCL - 16 + W C –ns RD to valid data in (with RW-delay) W 14 SR – 22 + W C – 2TCL - 28 + W C ns RD to valid data in (no RW-delay) W 15 SR – 47 + W C – 3TCL - 28 + W C ns ALE low to valid data in W 16 SR – 49 + W A + WC – 3TCL - 30 + W A + WC ns Address to valid data in W 17 SR – 57 + 2 W A + WC – 4TCL - 43 + 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 – 36 + 2 W A + WF 1) – 2TCL - 14 + 2 W A + WF 1) ns Data float after RD rising edge (no RW-delay 1)) W 21 SR – 15 + 2 W A + WF 1) – TCL - 10 + 2 W A + W F 1) ns Data valid to WR W 22 CC 24 + W C – 2TCL - 26 + W C –ns |
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