Rom types - PowerPoint PPT Presentation

Memory - 2

Memory - 2. Memory. The internal structure of the ICs ROM Types and RAM. Memory Types. How a ROM works. A 128 x 1 ROM. The basic structure. Larger Array Sizes. Arranged in blocks. Commercial ROM Types. Table 9-5 Type Tech ReadCyc WrCyc Comments

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Memory types

Memory types. ROM – Read only memory RAM – Random Access Memory. Word – a group of n bits processed as one word. ROM – Read only memory. Holds 2 n words of m bits. n bits. m bits. ROM – Read only memory 2 5 x4 example. ROM – Read only memory 2 5 x4 example. 0. A0. 1. 2.

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Programmable Logic Devices

Programmable Logic Devices. Read Only Memory (ROM) mask programmable PROM, EPROM, EEPROM Programmable Logic Array (PLA) Programmable Array Logic (PAL) Field Programmable Gate Array (FPGA) Mux based LUT based. ROMs. Input: k Address lines (A) Output: d Data lines (D) Function:

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