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Circuit and method for improved boost control of sram write operations

A technology of boosting circuit and boosting voltage, applied in information storage, static memory, digital memory information, etc., can solve problems such as affecting writability

Active Publication Date: 2019-08-02
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One specific technique used to improve stability is to lower the wordline potential during write operations; however, this lowering of the wordline potential can adversely affect writability

Method used

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  • Circuit and method for improved boost control of sram write operations
  • Circuit and method for improved boost control of sram write operations
  • Circuit and method for improved boost control of sram write operations

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Embodiment Construction

[0015] The present invention relates to semiconductor devices, and more particularly to static random access memory (SRAM) devices and methods of manufacturing the same. According to aspects of the invention, the write assist boost voltage is dynamically changed based on the stability assist settings applied in lowering the potential of the word line during the write operation of the selected SRAM cell. In an embodiment, different levels of boost are associated with each respective stability assist setting. Dynamically changing boost based on stability assist settings improves writability of selected cells without compromising stability of half-selected cells. In this way, embodiments of the present invention may improve writability when stability assist is turned on, but without causing reliability issues with pass gates. Improved readability can be translated into higher performance or higher density. The aspects described herein can also be used to improve the readability...

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Abstract

The present disclosure relates to boost control for improving SRAM write operations. The present invention provides a solution for providing write-assisted boosting for static random access memory (SRAM) arrays. A circuit includes a write driver for a static random access memory (SRAM) array. The circuit also includes a boost circuit that dynamically changes the write assist boost voltage based on a stability assist setting applied to the word lines of the array.

Description

technical field [0001] The present invention relates to semiconductor devices, and more particularly to static random access memory (SRAM) devices and methods of manufacturing the same. Background technique [0002] Static Random Access Memory (SRAM) is a type of semiconductor memory used in many integrated circuit applications, including embedded memory (eg, cache memory and register files) and external memory within general-purpose processors and application-specific integrated circuits. SRAM is an ideal memory due to its high speed, low power consumption and simple operation. Unlike dynamic random access memory (DRAM), SRAM does not require periodic refreshing to retain stored data, and its design is generally straightforward. [0003] A typical SRAM cell contains a pair of cross-coupled inverters for holding the desired data bit value (ie, 1 or 0) and the complement of that value. While SRAM is an ideal memory, it is known that if not properly designed and manufactured...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C11/413
CPCG11C11/413G11C11/418G11C11/419G11C8/10G11C8/08
Inventor G·M·布雷斯艾斯V·布林维加亚拉哈范K·S·伦加拉贾R·纳亚克
Owner INT BUSINESS MASCH CORP