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SAFC161RI Datasheet(PDF) 52 Page - Siemens Semiconductor Group |
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SAFC161RI Datasheet(HTML) 52 Page - Siemens Semiconductor Group |
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52 / 60 page ![]() Semiconductor Group 52 1998-05-01 C161RI 1) RW-delay and t A refer to the next following bus cycle. 2) It is guaranteed by design that read data are latched before the address changes. Address hold after WR 2) t 28 CC 0 + t F –0 + t F –ns ALE falling edge to CS t 38 CC – 4 - t A 10 - t A – 4 - t A 10 - t A ns CS low to Valid Data In t 39 SR – 74 + t C + 2tA – 3TCL - 20 + t C + 2tA ns CS hold after RD, WR t 41 CC 17 + t F –TCL - 14 + t F –ns ALE falling edge to RdCS, WrCS (with RW-delay) t 42 CC 27 + t A –TCL - 4 + t A –ns ALE falling edge to RdCS, WrCS (no RW-delay) t 43 CC – 4 + t A –– 4 + t A –ns RdCS to Valid Data In (with RW-delay) t 46 SR – 39 + t C – 2TCL - 24 + t C ns RdCS to Valid Data In (no RW-delay) t 47 SR – 70 + t C – 3TCL - 24 + t C ns RdCS, WrCS Low Time (with RW-delay) t 48 CC 53 + t C – 2TCL - 10 + t C –ns RdCS, WrCS Low Time (no RW-delay) t 49 CC 84 + t C – 3TCL - 10 + t C –ns Data valid to WrCS t 50 CC 49 + t C – 2TCL - 14 + t C –ns Data hold after RdCS t 51 SR 0–0 – ns Data float after RdCS (with RW-delay) t 53 SR – 43 + t F – 2TCL - 20 + t F ns Data float after RdCS (no RW-delay) t 68 SR – 11 + t F –TCL - 20 + t F ns Address hold after RdCS, WrCS t 55 CC – 10 + t F –– 10 + t F –ns Data hold after WrCS t 57 CC 17 + t F –TCL - 14 + t F –ns Parameter Symbol Max. CPU Clock = 16 MHz Variable CPU Clock 1/2TCL = 1 to 16 MHz Unit min. max. min. max. |
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