The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1994
Filed:
Nov. 18, 1991
Yasuhiro Fujii, Kawasaki, JP;
Hirohiko Mochizuki, Kawasaki, JP;
Yukinori Kodama, Kawasaki, JP;
Akira Sugiura, Kasugai, JP;
Fujitsu Limited, Kanagawa, JP;
Fujitsu VLSI Limited, Aichi, JP;
Abstract
The present invention relates to a semiconductor unit including a delay circuit used for an address transition detecting circuit in a storage, wherein a change of an address is detected and, accordingly, an access address in a memory cell is altered. The present invention aims at ensuring extending an address signal even though that of a short pulse width is provided, and at outputting an address transition detection signal of a predetermined pulse width, thereby stabilizing the operation of the circuit and improving its reliability. The present invention includes a second address extending circuit having a complementary transistor circuit, a capacitor connected to the output part of the complementary transistor circuit, and a resistor serially connected between a pair of complementary transistors. A signal generating circuit for outputs an address transition detection signal in response to a non-inverted address signal, an inverted address signal, and output of the first and the second address extending circuits.