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ST10R172LT6 数据表(PDF) 51 Page - STMicroelectronics |
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ST10R172LT6 数据表(HTML) 51 Page - STMicroelectronics |
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51 / 68 page ![]() 51/68 ST10R172L - ELECTRICAL CHARACTERISTICS Data hold after WR t24 CC 5 + tF – TCL - 5 + tF –ns ALE rising edge after RD, WR t26 CC -5 + tF – -5 + tF –ns Address hold after RD, WR t28 CC 0 (no tF) -9+ tF (tF>0) – 0 (no tF) -9+ tF (tF>0) –ns Address hold after WRH t28h CC -1 (no tF) -8 +tF (tF>0) – -1 (no tF) -8 + tF (tF>0) –ns Latched CS setup to ALE t38 CC -7 + tA 3 + tA -7 + tA 3 + tA ns Unlatched CS setup to ALE t38u CC 3 + tA – TCL - 7 + tA –ns Latched CS low to Valid Data In t39 SR – 13 + tC + 2tA – 3TCL - 17 + tC + 2tA ns Unlatched CS low to Valid Data In t39u SR – 23 + tC + 2tA – 4TCL - 17 + tC + 2tA ns Latched CS hold after RD, WR t41 CC 3 + tF – TCL - 7 + tF –ns Unlatched CS hold after RD, WR t41u CC 0 (no tF) -7 +tF (tF>0) – 0 (no tF) -7 + tF (tF>0) –ns Address setup to RdCs, WrCs (with RW-delay) t82 CC 13 + 2tA – 2TCL - 7 + 2tA –ns Address setup to RdCs, WrCs (no RW-delay) t83 CC 3 + 2tA – TCL - 7 + 2tA –ns RdCS to Valid Data In (with RW-delay) t46 SR – 3 + tC – 2TCL - 17 + tC ns RdCS to Valid Data In (no RW-delay) t47 SR – 13 + tC – 3TCL - 17 + tC ns RdCS, WrCS Low Time (with RW-delay) t48 CC 11 + tC – 2TCL - 9 + tC –ns RdCS, WrCS Low Time (no RW-delay) t49 CC 21 + tC – 3TCL - 9 + tC –ns Data valid to WrCS t50 CC 13 + tC – 2TCL - 7 + tC –ns Parameter Symbol Max CPU Clock 50MHz Variable CPU Clock 1/2TCL = 1 to 50 MHz min. max. min. max. Table 15 Demultiplexed bus 1 |
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