Read-only memory array structure, electronic equipment, extension method and encoding method

Abstract

The invention provides a read-only memory array structure, electronic equipment, an extension method and a coding method. The read-only memory array structure comprises (m + 1) * n source electrodes / drain electrodes, wherein the m word lines are arranged in the row direction, and the m grid electrodes are connected with the word lines. (m + 1) * n connecting blocks located on the first metal layer; (m + 1) * n first connecting holes, wherein the first connecting holes are connected with the active regions and the connecting blocks of the storage units; the n bit lines and the (n + 1) ground lines are alternately arranged along the column direction, and the bit lines and the ground lines are positioned on the second metal layer; the second connecting holes are connected with the first metallayer and the second metal layer; wherein the number of the second connecting holes is determined by the number of the stored data '0'. The bit lines and the ground lines in the array area are arranged at intervals, and mutual interference between the bit lines can be effectively shielded when the ground lines are inserted between the adjacent bit lines. Bit lines and ground lines are arranged orderly, accurate storage of data can be achieved by using a set of simple connecting hole calling rules in the array area, and programming layout splicing during use is facilitated.

Description

technical field [0001] The invention relates to the field of chip design, in particular to a read-only memory array structure, memory, expansion method and encoding method. Background technique [0002] Memory and storage technology is one of the key technical fields driving the development of the information age. With the rapid development of related technologies such as the Internet, wireless phones, personal digital assistants, digital cameras, digital camcorders, digital music players, computers, and network equipment, people continue to demand faster and safer storage and storage. One of the most widely used memories A typical type of memory is read only memory (ROM). [0003] The most common ROM is based on N-type field effect transistors. A read-only memory is generally composed of a decoder, a controller, and a read-only memory array structure. Among them, the read-only memory array structure plays a decisive role in important performance indicators such as storage...

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Problems solved by technology

[0009] The main purpose of the present invention is to provide a kind of read-only memory array structure, electronic equipment, expansion method and encoding method, to solve the low efficiency of reading operation of the read-only memory array structure in the prior art, and do not utilize when connecting with other modules The technical problems of wiring layout and connection hole calling rules are complex

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