一种1S1C存储器数据读取方法及系统

By controlling the bit line and word line voltages of the 1S1C memory and using voltage changes to determine the state of the memory cell, the problem of high read error rate is solved, and higher data read reliability and accuracy are achieved.

CN115240732BActive Publication Date: 2026-07-17HUAZHONG UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2022-07-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing 1S1C memory read solutions, the read current pulse is at the nanosecond level, making it difficult to precisely control the timing of the read pulse and the detection circuit, resulting in a high read error rate.

Method used

The state of the memory cell is determined by controlling the voltage on the bit lines and word lines connected to the memory cell and using the change in the bit line voltage. The specific steps include charging the bit line voltage to VreadBL and maintaining it, charging the word line voltage to VreadWL, using the difference in the read voltage Vread to determine the state of the memory cell, and outputting high and low level signals through a voltage comparator.

Benefits of technology

It improves the accuracy and reliability of read operations, reduces the requirements for read timing control, and ensures the accuracy of data reading.

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Abstract

本发明公开了一种1S1C存储器数据读取方法及系统。其中,该方法包括:接收并根据读取指令,将与待读取存储单元相连的位线电压充至位线电压工作值;将与待读取存储单元相连的字线电压充至字线电压工作值,并在读取期间始终维持该字线电压为字线电压工作值;实时检测与待读取存储单元相连的位线上的电压,当该位线上的电压持续下降时,则判断待读取存储单元的状态为逻辑“1”,并输出高电平信号;否则,则判断待读取存储单元的状态为逻辑“0”,并输出低电平信号。本发明通过感测位线上电压的变化来实现数据读取,由于位线上电压的下降是持续存在的,对读取时序控制的要求不高,可以大大提升读操作的准确度,使得读取的数据可靠性更高。
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