Common memory OTP implementation method of common memory and memory

Abstract

The invention discloses an OTP (One Time Programmable) implementation method of a common memory and the memory formed by simply modifying the common memory, so that the common memory has a one-time programmable function, and is simple in structure and low in manufacturing cost. The OTP implementation method of the common memory comprises the following steps: (10) storage space division: dividing the storage space of the common memory into a special space for storing the programmable times of the memory and a common space; (20) special space configuration: configuring the programmable frequencyN of the memory stored in the special space to be 1; (30) programming control: when the data is to be programmed, determining whether the current programming is allowed or not according to the programmable times N of the memory; and (40) data reading and writing: when the current programming is allowed, writing the to-be-programmed data into the memory, and subtracting 1 from the programmable frequency N of the memory. The memory comprises a common memory (1), a programming control module (2) and a data read-write module (3).

Description

technical field [0001] The invention belongs to the technical field of integrated circuit memory, in particular to a common memory OTP realization method and a memory obtained by the method. Background technique [0002] In integrated circuits, various memories are used. According to the number of programming allowed, it can be divided into ordinary memory with unlimited programming times and one-time programmable (OTP, One Time Programmable) memory, that is, OTP memory. [0003] OTP memory is more commonly used. It is often used to store key security-related data such as user keys and important IDs. [0004] However, compared with ordinary memories, existing OTP memories have complex structures and are expensive. [0005] Therefore, the problem existing in the prior art is: how to realize the same function as the OTP memory with a common memory with simple structure and cheap manufacturing cost, thereby reducing the manufacturing cost and simplifying the difficulty of ta...

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Problems solved by technology

[0004] However, compared with ordinary memory, the existing OTP memory has a complex structure and is expensive

[0005] Therefore, the problem in the prior art is: how to realize the same function as the OTP memory with a simple structure and cheap common memory, thereby reducing the cost and simplifying the difficulty of tape-out selection

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