Memory system and operaiton emthod for same

Abstract

The invention provides a memory system including a non-volatile memory array and a memory controller. The non-volatile memory array is configured to store data. The controller is coupled to the non-volatile memory array. The memory controller is configured to provide a special write operation to write the data in the non-volatile memory array before a board mount operation is applied, and provide a regular write operation to write the data in the non-volatile memory array after the board mount operation is applied. A read margin provided by the special write operation is larger than a read margin provided by the regular write operation. Besides, an operation method for the memory system is also provided.

Description

technical field [0001] The present invention relates to a memory system, and more particularly, to a memory system suitable for detecting whether the memory system has undergone a circuit board mounting operation and an operating method thereof. Background technique [0002] Non-volatile memory has the advantage that stored data will not disappear even after power failure, so for many electronic products, in order to maintain normal operation, non-volatile memory has become an indispensable storage element. Currently, non-volatile memories are classified into many types. Resistive random access memory (RRAM) is a non-volatile memory that is being actively developed by the industry. It has low write operation voltage, short write and erase time, long-term storage time, non-destructive read, multiple The advantages of state storage, simple structure, and small footprint have great application potential in the development of personal computers and electronic equipment in the f...

AI Technical Summary

Problems solved by technology

[0003] However, many questions remain about the reliability of non-volatile memory

One of the problems is the data storage error caused by the resistance drift in the high temperature environment, which will cause the data read from the non-volatile memory after the high-temperature process to be different from the data originally stored in the non-volatile memory

In addition, when the non-volatile memory is directly installed or placed on the surface of the printed circuit board through surface mount technology (surface mount technology, SMT), it must also be used under high temperature conditions (for example, more than 1 to 3 times) 260°C for 30 seconds), which can seriously cause data corruption problems

It is difficult to know with the current technology whether the circuit board assembly operation accompanied by high temperature has been imposed on the non-volatile memory

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