Project1_SRAM

Project1_SRAM - Miniproject Due 5/10/10 1. Introduction:...

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ECE 165, Prof. Buckwalter 1 1. Introduction: 64bit SRAM SRAM is an important memory component. Compared to DRAM, SRAM is static and stores bits as long as a voltage supply is applied. Modern SRAM is constructed in subarrays of memory as shown in the figure below. The most common memory cell is the 6 transistor cell (6T). You may refer to chapter 12 in the textbook to learn more about the 6T cell but the basic principle relies on positive feedback between two inverters. Notice that this cell requires a complementary drive to change the state of each inverter in the simple latch. The SRAM array requires a binary to ther- mometer decoder to address a particular memory location. An M bit address must activate exclu- sively one of word lines. In this problem we wish to write a byte to different locations in memory and then read them back. In the figure below I have provided some common circuits for driving the SRAM cell, the SRAM cell itself, and a sense amplifier for regenerating signals on the lines. You may or may not find these circuits useful in achieving your goals. You may also find a pre-charge circuit useful for reading from the SRAM. Note this schematic is informative. 2
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Project1_SRAM - Miniproject Due 5/10/10 1. Introduction:...

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