Pulse generating circuit for dynamic random access memory device

Details Pulse generating circuit for dynamic random access memory device Pulse generating circuit for dynamic random access memory device

1998-10-27

2000-09-05

Lam, Tuan T.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327 99, 327299, H03K 1700

Patent

active

061148911

ABSTRACT:
A pulse generating circuit for a dynamic random access memory includes a fixed pulse generating unit receiving an input signal and generating an output pulse signal of a fixed width, a pulse delay unit receiving the input signal and delaying an output pulse signal of a variable width, a pulse width detecting unit receiving the input signal and an inverted input signa, outputting a first flag signal displaying a low pulse width by detecting the low pulse width of the input signal, and outputting a second flag signal displaying a high pulse width by detecting the high pulse width of the input signal, a NOR gate performing a logical operation on the first flag signal and the second flag signal and outputting a third flag signal, and a multiplexer coupled to the fixed pulse generating unit, the pulse delay unit, and the pulse width detecting unit and outputting an output pulse signal in accordance with the third flag signal.

REFERENCES:
patent: 4970405 (1990-11-01), Hariwara
patent: 5583461 (1996-12-01), Lowe
patent: 5886562 (1999-03-01), Garrity et al.

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