Memories

Last updated 5/15/20

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These slides review the design for several types of memories

Upon completion: You should be able to design ROMs and RAMS of various sizes and register

configurations

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Memories

• ROM – mux based with memory values stored as constants

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Memories

• ROM – mux based

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Memories

• ROM – mux based

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Memories

• ROM – inferred with memory values stored in a xx.mif file

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Memories

• ROM – inferred w/ mif file

rom_init.mif

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Memories

• ROM – inferred w/ mif file

• Cannot be simulated

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Memories

• SRAM – synchronous write – generic• No inferred memory

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Memories

• SRAM – register based

32 bits x 64 words4 bytes x 64 words8x4x64 bits (registers) = 2048

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• SRAM – register based

Memories

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Memories

• SRAM – register based

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Memories

• SRAM – synchronous read/write – generic• Inferred memory

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Memories

• SRAM – inferred memory

8 bits x 4096 words = 32,768 bits

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Memories

• SRAM – inferred memory

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Memories

• SRAM – inferred memory