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GP2021 Datasheet(PDF) 51 Page - Mitel Networks Corporation |
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GP2021 Datasheet(HTML) 51 Page - Mitel Networks Corporation |
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51 / 62 page ![]() 51 GP2021 EEPROM/SPARE data D<15:0> NRD MCLK NEEPROM/NSPARE_CS A<22:20> DBE neeLmcL nrdLmcL adVneeL nrdHdbH mcLnrdH A<9:0> Fig. 32 : Intel 486 mode write (NARMSYS = 1, NINTELMOT = 0, WRPROG = !) Timing Parameter Description Symbol Min Max Units Notes ALE_IP High to WREN and NCS Low setup time τ alHwcL 5ns ALE_IP High to ALE_IP Low pulse width τ alHalL 13 ns ALE_IP Low to WREN or NCS High pulse width τ alLwcH 10 ns 1 WREN and NCS Low to WREN or NCS High pulse width τ wcLwcH 10 ns WREN or NCS High to ALE_IP High hold–off time τ wcHalH 5ns Address Valid to ALE_IP Low setup time τ adValL 9ns ALE_IP Low to Address Invalid hold time τ alLadI 8ns Data Valid to WREN or NCS High setup time τ daVwcH 7ns WREN or NCS High to Data Invalid hold time τ wcHdaI 5ns Note: 1 Write inhibited until ALE_IP falling edge. |
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