Flip-flop circuit, pipeline circuit including a flip-flop...

Details Flip-flop circuit, pipeline circuit including a flip-flop... Flip-flop circuit, pipeline circuit including a flip-flop...

2008-08-11

2010-11-30

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S199000, C327S200000, C327S203000

Reexamination Certificate

active

07843243

ABSTRACT:
Example embodiments relate to an electronic circuit, for example, a flip-flop circuit, a pipeline circuit including the flip-flop circuit and a method for operating the flip-flop circuit. A flip-flop circuit may include a precharge transistor configured to precharge an internal node to a first power supply voltage in response to a clock signal, a first pull-down unit configured to pull down a voltage of the internal node to a second power supply voltage, a pull-up transistor configured to pull up a voltage of an output node to the first power supply voltage in response to the voltage of the internal node, and a second pull-down unit configured to pull down the voltage of the output node to the second power supply voltage. The pipeline circuit may include a pulse generating circuit, a first flip-flop group, a combination logic circuit, and a second flip-flop group. A method for operating a flip-flop circuit may include precharging an internal node to a first power supply voltage in response to a clock signal, pulling down a voltage of the internal node, pulling down the voltage to a second power supply voltage in response to a first pulse signal, and pulling up a voltage of an output node to the first power supply voltage.

REFERENCES:
patent: 5821791 (1998-10-01), Gaibotti et al.
patent: 6060924 (2000-05-01), Sugano
patent: 6181180 (2001-01-01), Chen et al.
patent: 6937079 (2005-08-01), Zhao et al.
patent: 2003/0052716 (2003-03-01), Kim et al.
patent: 10-2004-0035499 (2004-04-01), None
patent: 10-2005-0104530 (2005-11-01), None

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