Current-mode sensing structure used in high-density...

Details Current-mode sensing structure used in high-density... Current-mode sensing structure used in high-density...

2008-01-29

2008-01-29

Phung, Anh (Department: 2824)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185200, C365S210130

Reexamination Certificate

active

07324382

ABSTRACT:
A current-mode sensing structure used in a high-density multiple-port register in logic processing and a method for the same are proposed. First, a reference current is defined by a dummy word line of a dummy cell and output. A multiple-port register file cell is then used to send out a select signal of “0” or “1” and output a cell current according to the select signal and the reference current. Finally, the cell current and the reference current are sent to a current comparator amplifier, which senses and outputs a difference value between the cell current and the reference current to perform session at once (SAO) recording. Because the difference value has only two possibilities: the reference current or its negative, the sensing time of the current comparator amplifier can be shortened.

REFERENCES:
patent: 6469937 (2002-10-01), Fuchigami et al.
patent: 6507523 (2003-01-01), Pekny
patent: 6834024 (2004-12-01), Frydel
patent: 2002/0060939 (2002-05-01), Kuo et al.

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