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GP2021 Datasheet(PDF) 56 Page - Mitel Networks Corporation |
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GP2021 Datasheet(HTML) 56 Page - Mitel Networks Corporation |
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56 / 62 page  56 GP2021 Timing Parameter Description Symbol Min Max Units Notes ALE_IP High to READ and NCS Low setup time τ alHrcL 14 ns ALE_IP High to ALE_IP Low pulse width τ alHalL 10 ns READ or NCS High to ALE_IP High hold off time τ rcHalH 5ns Address Valid to READ and NCS Low setup time τ adVrcL 10 ns Address Valid to ALE_IP Low setup time τ adValL 8ns ALE_IP Low to Address Invalid hold time τ alLadI 8ns READ and NCS Low to Data Valid propagation delay τ rcLdaV 44 ns 1 READ or NCS High to Data High Impedance τ ρcHdaZ 423 ns Notes: 1 The Data Out propagation delay is for a Data Bus load of 50pF. READ ALE__IP A<9:2> D<15:0> rcHalH alHalL adValL alLadI rcLdaV rcHdaZ ADDRESS VALID NCS alHrcL adVrcL WREN (HIGH) Fig. 37 : Intel 186 mode read ALE_IP being pulsed (NARMSYS = 1, NINTELMOT = 0, WRPROG = 0) |
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