Data strobe signal generating circuit and data strobe signal...

Details Data strobe signal generating circuit and data strobe signal... Data strobe signal generating circuit and data strobe signal...

2007-06-12

2007-06-12

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S112000

Reexamination Certificate

active

11066010

ABSTRACT:
Provided is a data strobe signal generating circuit capable of guaranteeing a preamble time (tRPRE). The data strobe signal generating circuit includes: a strobe output driver for outputting a data strobe signal to an outside of a semiconductor device so as to indicate synchronization between an external device and data input/output; and a preamble part for maintaining an output of the strobe output driver to a predetermined logic level during a predetermined delay time from an enabling timing of the preamble signal. Accordingly, it is possible to guarantee the stable operation of the semiconductor memory even when PVT (processor, operating voltage, operating temperature) changes.

REFERENCES:
patent: 6327196 (2001-12-01), Mullarkey
patent: 6351172 (2002-02-01), Ouyang et al.
patent: 6940321 (2005-09-01), Heo et al.
patent: 2005/0128825 (2005-06-01), Cho

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