Converting SRAM cells to ROM cells

Details Converting SRAM cells to ROM cells Converting SRAM cells to ROM cells

2011-04-05

2011-04-05

Nguyen, Tan T. (Department: 2827)

Static information storage and retrieval

Systems using particular element

Flip-flop

C365S154000, C365S104000

Reexamination Certificate

active

07920411

ABSTRACT:
A method of converting a static random access memory cell to a read only memory cell and the cell thus converted is disclosed. The cell to be converted comprises a data retention portion powered by a higher and lower voltage supply line and four transistors arranged as two cross coupled inverters. It is converted to a read only memory cell by severing a connection between at least one of said transistors within a first of said two inverters and one of said voltage supply lines such that when powered said first inverter outputs a predetermined value.

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patent: 6768669 (2004-07-01), Schmidt et al.

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