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.

Date of Patent:
Mar. 07, 2000

Filed:

Sep. 01, 1998
Applicant:
Inventors:

Satoru Isomura, Ohme, JP;

Atsushi Shimizu, Ohme, JP;

Keiichi Higeta, Ohme, JP;

Tohru Kobayashi, Iruma, JP;

Takeo Yamada, Cambridge, MA (US);

Yuko Ito, Hamura, JP;

Kengo Miyazawa, Ohme, JP;

Kunihiko Yamaguchi, Sayama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
36523003 ; 36523001 ; 365233 ;
Abstract

A memory portion and a logic circuit portion of a semiconductor device are formed on a single semiconductor substrate in which a first logic circuit block and a second logic circuit block are formed in different areas and the second logic circuit is located between a pair of memory blocks. Data stored in the pair of memory blocks are transmitted to the second logic circuit block for processing via a memory peripheral circuit. A result of the data processing is transmitted to the first logic circuit block or an external device via an input/output circuit provided in the second logic circuit block. A clock signal entered at the center portion of the semiconductor chip is supplied to a plurality of first state clock distributing circuits equidistantly disposed from the center portion and then to a plurality of second stage clock distributing circuits at least equidistantly disposed from each of the first state clock distributing circuits. Next, the clock signal is supplied to a plurality of third state clock distributing circuits equidistantly disposed from each of the second stage clock distributing circuits and then supplied to a plurality of final stage clock distributing circuits equidistantly disposed from each of the third stage clock distributing circuits. From these final stage clock distributing circuits, the clock signal is supplied to an area in whose units an internal gate array and a RAM macro cell or a logic macro cell are made replaceable with each other.


Find Patent Forward Citations

Loading…