Circuit and method of controlling input/output sense...

Details Circuit and method of controlling input/output sense... Circuit and method of controlling input/output sense...

2007-06-21

2009-06-30

Pham, Ly D (Department: 2827)

Static information storage and retrieval

Read/write circuit

Flip-flop used for sensing

C365S189050, C365S191000, C365S193000, C365S196000, C327S057000

Reexamination Certificate

active

07554866

ABSTRACT:
An input/output sense amplifier (IOSA) controller of a semiconductor memory device includes an auto pulse generator and a latch enable signal generating circuit. The auto pulse generator generates an auto pulse signal having a first pulse shape. The latch enable signal generating circuit generates a first latch enable signal having a second pulse shape in response to an auto pulse signal in normal mode, and generates a second latch enable signal having a level shape that is enabled for long duration in response to the write enable bar signal in test mode. Accordingly, the semiconductor memory device including the IOSA controller may safely test a characteristic of the IOSA.

REFERENCES:
patent: 6449204 (2002-09-01), Arimoto et al.
patent: 2002/0181301 (2002-12-01), Takahashi et al.
patent: 2003/0133350 (2003-07-01), Nakao
patent: 2003-0079011 (2003-10-01), None
patent: 10-2004-0009543 (2004-01-01), None
patent: 10-2005-0054595 (2005-06-01), None

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