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OTP (One Time Programmable) or MTP (Multiple Time Programmable) memory module with dual-cell structure

A storage module and dual-unit technology, applied in information storage, static memory, read-only memory, etc., can solve the problems of cost increase and achieve the effects of improving reliability, flexible adaptation requirements, and high cost performance

Inactive Publication Date: 2015-01-07
SUZHOU FENGCHI MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If double-unit work is used to improve reliability, the area will be doubled and the cost will increase accordingly

Method used

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  • OTP (One Time Programmable) or MTP (Multiple Time Programmable) memory module with dual-cell structure
  • OTP (One Time Programmable) or MTP (Multiple Time Programmable) memory module with dual-cell structure
  • OTP (One Time Programmable) or MTP (Multiple Time Programmable) memory module with dual-cell structure

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] Such as image 3 Shown are two bits (bit) in the memory array of the present invention, and each bit includes two OTP / MTP storage units (cells). Cell3 and cell2 form a group, and cell1 and cell0 form a group.

[0018] Such as Figure 4 , cell3 and cell2 form a differential (differential) double-cell structure, when cell3 is "1" and cell2 is "0", the output bit of SA (sense amplifier, sense amplifier) ​​is "1". cell1 and cell0 form a differential dual-cell structure. When cell1 is "0" and cell0 is "1", the output bit through SA is "0", that is, the final output of each dual-cell structure is one bit.

[0019] Such as figure 1 Shown is the signal boundary of the single-unit working mode, Program signal is the programming signal, Erase signal is the erasing signal, and reference is the reference signal. If one OTP or MTP storage unit is a program unit ("1"), th...

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Abstract

The invention provides an OTP (One Time Programmable) or MTP (Multiple Time Programmable) memory module with a dual-cell structure. The OTP or MTP memory module comprises a memory array, a data selector, a reading amplifier and a controller; two adjacent memory cells in the memory array form one group when in a dual-cell working mode, and the two memory cells are called as a first cell and a second cell respectively and form a differential dual-cell structure; when the first cell is 1 and the second cell is 0, the output of the reading amplifier is 1, when the first cell is 0 and the second cell is 1, the output of the reading amplifier is 0, that is, the final output of the dual-cell structure is one bit. The OTP or MTP memory module has the advantages that the reliability of the OTP or MTP memory module is improved in a differential dual-cell working mode, applications in different occasions are combined, the memory module can be flexibly adaptive to the demands, and the cost performance is high.

Description

technical field [0001] The invention relates to an OTP (one-time programmable) or MTP (multiple programmable) memory module, in particular to an OTP or MTP memory module with a double-unit structure working mode. Background technique [0002] The non-volatile memory compatible with the CMOS logic process usually does not necessarily meet the requirements for data retention or reliability due to the non-traditional dedicated non-volatile memory process, and some methods are needed to make up for it. Different applications have different reliability requirements and cost requirements. The reliability of OTP / MTP memory modules with single-unit operation will be lower, but the area is not wasted, and the cost is relatively low. If double-unit work is used to improve reliability, the area will be doubled, and the cost will increase accordingly. If the applications of different occasions can be combined, the application requirements can be better met. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): G11C16/06G11C17/12
CPCG11C16/06G11C17/12
Inventor 方钢锋
Owner SUZHOU FENGCHI MICROELECTRONICS
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