Circuit for controlling pulse width

Details Circuit for controlling pulse width Circuit for controlling pulse width

2006-12-26

2006-12-26

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S166000

Reexamination Certificate

active

07154316

ABSTRACT:
Provided is directed to a circuit for controlling a pulse width which can be adjustable to a next generation standard DRAM such as a high speed DDR2 or DDR3 as well as a high speed graphic DRAM for supplying various CAS latencies by means of including: a mode register set for setting a plurality of CAS latencies according to an operation frequency by a command inputted from a chip set; and a pulse generation circuit for generating a pulse having a variable width by using a delay time according to the plurality of CAS latencies set in the mode register set.

REFERENCES:
patent: 5646565 (1997-07-01), Tukidate
patent: 5808961 (1998-09-01), Sawada
patent: 6094080 (2000-07-01), Jeong et al.
patent: 6151270 (2000-11-01), Jeong
patent: 6504789 (2003-01-01), Hirakawa
patent: 6621315 (2003-09-01), Heo et al.
patent: 6784709 (2004-08-01), Ryu
patent: 7030671 (2006-04-01), Park
patent: 1998-030999 (1999-07-01), None
patent: 2001-0036041 (2001-05-01), None

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