Static information storage and retrieval – Systems using particular element – Flip-flop
Reexamination Certificate
2000-01-04
2008-10-07
Nguyen, Van Thu (Department: 2824)
Static information storage and retrieval
Systems using particular element
Flip-flop
C713S002000, C365S095000, C365S103000, C365S189090
Reexamination Certificate
active
07433224
ABSTRACT:
There is disclosed a static random access memory (SRAM) device that stores an embedded program that is accessible when the SRAM device is powered up. The SRAM device comprises a plurality of storage cells, each of the storage cells comprises a data latch having an input and an output, wherein the data latch comprises a) a first inverter having an input coupled to the first I/O line and an output coupled to the second I/O line, and b) a second inverter having an input coupled to the second I/O line and an output coupled to the first I/O line. The storage cell also comprises a biasing circuit that forces at least one of the first and second I/O lines to a known logic state when power is applied to the SRAM device. The known logic state comprises one bit in the embedded program.
REFERENCES:
patent: 4777623 (1988-10-01), Shimazu et al.
patent: 5365475 (1994-11-01), Matsumura et al.
patent: 5434811 (1995-07-01), Evans, Jr. et al.
patent: 5923582 (1999-07-01), Voss
patent: 06060667 (1994-03-01), None
Dunlap Frederick S.
Eitrheim John
Advanced Micro Devices , Inc.
Nguyen Van Thu
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