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PC87200 데이터시트(PDF) 28 Page - National Semiconductor (TI) |
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PC87200 데이터시트(HTML) 28 Page - National Semiconductor (TI) |
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28 / 33 page ![]() 8.0 Electrical Characteristics (Continued) 28 www.national.com 8.2.4 Timing Diagram for NAND test Set PCIRST#, BALE and IRQ7 to low (PCPCIREQ# should be left floating), toggle PCICLK (provide a low-to- high transition) at least once (recommended to provide two edges as show in the diagram below). All other pins in the NAND chain should be pulled high. Then release PCIRST#. After PCIRST# goes inactive, starting with SA18 going counter-clockwise, switch each pin in the NAND chain low at a rate of at least about 100ns apart. PCIRST# BALE, IRQ7 - stay low PCICLK SA18 SA19 IRQ9 AD0 PCPCIGNT# t tt 2t t t t t Note : t >= 100ns RSTDRV |
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