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主要内容: 存储器设计

习题课:存储器. 主要内容: 存储器设计. P396-2: 某半导体存储器容量16 K  8 位,可选芯片容量为4 K  4/ 片 。地址总线 A 15 -A 0 (低),双向数据线 D 7 -D 0 (低) ,由 R/ W 线控制读写。请设计并画出该存储器逻辑图,注明地址分配、片选逻辑式及片选信号极性。. (1)芯片选取与存储 空间分配 共需: 4 K  4/ 片 : 8片 存储空间分配:. 芯片容量 芯片地址 片选信号 片选逻辑

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主要内容: 存储器设计

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  1. 习题课:存储器 主要内容: 存储器设计

  2. P396-2: 某半导体存储器容量16K  8位,可选芯片容量为4K  4/片 。地址总线A15-A0(低),双向数据线D7-D0(低) ,由R/W线控制读写。请设计并画出该存储器逻辑图,注明地址分配、片选逻辑式及片选信号极性。 (1)芯片选取与存储 空间分配 共需: 4K  4/片 : 8片 存储空间分配:

  3. 芯片容量 芯片地址 片选信号 片选逻辑 4K  8 A11—A0 CS0 A13 A12 4K  8A11—A0 CS1 A13 A12 4K  8 A11—A0 CS2 A13 A12 4K  8 A11—A0 CS3 A13 A12 (2).地址分配与片选逻辑

  4. D7 - 4 D3 - 0 R/ W 4 K*4 4 K*4 4 K*4 4 K*4 CS1 CS2 CS3 CS0 4 K*4 4 K*4 4 K*4 4 K*4 A11 - 0 A - A11 - 0 A11 - 0 A11 - 0 A13 A12 A12 A13 A13 A12 A 12 A13 (3).存储器逻辑图

  5. P396-3 :半导体存储器总容量15k  8位,其中固化区8k  8 , 选用EPROM芯片4K  8/片,可随机读写区7K  8,可选用SRAM芯片有: 4K  4/片、 2K  4/片、 1K  4/片。地址总线A15 A0, 双向数据总线D7 D0 由R/W线控制读写,MREQ为低电平时允许存储器工作。请设计并画出该存储器逻辑图,注明地址分配、片选逻辑式及片选信号极性。

  6. 0000 0FFF 4K  8 ROM 1000 1FFF 4K  8 ROM 2000 2FFF 4K  4 4K  4 3000 37FF 2K  4 2K  4 1K  4 1K  4 3800 3BFF (1)芯片选取与存储空间分配 共需: EPROM 4K  8, 2片 SRAM 4K  4,2片 2K  4,2片 1K  4,2片 存储空间分配:

  7. 片内地址片选信号片选逻辑 4K  8 A11-0 CS0 A13A12 4K  8 A11-0 CS1 A13A12 4K  8 A11-0 ` CS2 A13A12 2K  8 A10-0 CS3 A13A12A11 1K  8 A9-0 CS4 A13A12A11A10 (2) 地址信号与片选逻辑

  8. D7 - 4 - D3 0 R/ W MREQ CS2 CS3 CS4 4 K*4 2 K*4 1 K*4 CS0 CS1 4 K*8 4 K*8 ROM ROM CS2 CS3 CS4 4 K*4 2K*4 1K*4 A11 - 0 A10 - 0 A9 - 0 A A11 - 0 A11 - 0 A13 A13 A12 A13 A11 A13 A12 A13 A12 A10 A12 A12 A11 (4)存储器逻辑图

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