Semiconductor integrated circuit

Details Semiconductor integrated circuit Semiconductor integrated circuit

2007-03-20

2007-03-20

Phan, Trong (Department: 2827)

Static information storage and retrieval

Addressing

Plural blocks or banks

C365S230060, C365S063000

Reexamination Certificate

active

10968072

ABSTRACT:
Second memory cells of a second memory block each have an area 2atimes (a is a positive integer) that of each first memory cell of a first memory block. Sizing the first and second memory cells in a predetermined ratio can make easily identical the dimensions of the first memory block and the second memory block. Consequently, it is possible to easily align peripheral circuits to lie around the plurality of first and second memory blocks, such as decoders. This also facilitates the wiring of signal lines to be connected to the peripheral circuits. This makes it possible to improve the layout design efficiency for a semiconductor integrated circuit. Thus, a plurality of types of memory blocks can be formed on a semiconductor integrated circuit efficiently. The semiconductor integrated circuit can be prevented from increasing in chip size depending on the layout design, owing to its simplified layout.

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