Static information storage and retrieval – Powering
Reexamination Certificate
2008-12-15
2009-10-13
Dinh, Son (Department: 2824)
Static information storage and retrieval
Powering
C365S189011
Reexamination Certificate
active
07602666
ABSTRACT:
A unique number is formed with logic states from a static random access memory (SRAM), which is laid out to be balanced so that memory cells within the SRAM assume a non-random logic state when power is applied to the SRAM. The unique number is formed by grounding the word lines and bit lines before power is applied to the memory cells, applying power to the memory cells to assume the non-random logic state, reading the non-random logic states held by the memory cells, and forming the unique number from the logic states read from the memory cells.
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Dinh Son
National Semiconductor Corporation
Nguyen Nam
Pickering Mark C.
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