ROM (Read Only Memory) and layout thereof
A memory and layout technology, applied in the field of integrated circuits, can solve the problems of large unit information storage area and shrinkage of ROM basic storage units, and achieve the effect of reducing the storage area
Inactive Publication Date: 2013-05-08
苏州兆芯半导体科技有限公司
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The invention discloses a ROM and a layout thereof. The ROM comprises at least one MOS (Metal Oxide Semiconductor) tube, bit lines and word lines, wherein each MOS tube is corresponding to at least two bit lines, and based on the connection states of two or more bit lines and the MOS tube, the MOS tube can store more than two types of state information. Namely, under the premise of fixed storage area of the ROM, by increasing the number of bit line regions, programmable information of one MOS tube of the ROM is more than 1 bit, and correspondingly, the storage area of the 1 bit of information is reduced.
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