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fuse circuit

A fuse, circuit technology, used in information storage, static memory, instruments, etc.

Inactive Publication Date: 2017-03-08
NUVOTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transient blocking circuit operates on operating voltage

Method used

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Embodiment Construction

[0016] The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention, and the description of the structure and operation is not intended to limit the order of its execution. Any recombination of components Structures, resulting devices with equivalent functions are all within the scope of the present invention. In addition, the drawings are for illustrative purposes only and are not drawn to original scale.

[0017] As used herein, "about", "approximately" or "approximately" generally means that the error or range of the value is within 20%, preferably within 10%, and more preferably It is within five percent. If there is no explicit statement in the text, the numerical values ​​mentioned are all regarded as approximate values, such as errors or ranges that can be expressed as "about", "approximately" or "approximately", or other approximate va...

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PUM

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Abstract

An embodiment of the invention provides a fuse circuit. The fuse circuit comprises a transient block circuit, a fuse and a silicon controlled rectifier. The transient block circuit operates based on an operation voltage. A first end of the fuse is electrically connected with the transient block circuit. The silicon controlled rectifier is electrically connected with a second end of the fuse. When a noise pulse occurs in the operation voltage, the transient block circuit is used for temporarily isolating the fuse from the noise pulse, so that the voltage at the second end of the fuse is maintained to be smaller than a trigger voltage of the silicon controlled rectifier.

Description

technical field [0001] The present invention relates to a memory circuit, and more particularly to a fuse circuit (fuse circuit) resistant to noise interference. Background technique [0002] Generally speaking, fuse circuits are widely used in memory devices or analog circuits (such as energy gap reference circuits) as one-time-programmable (One Time Programming, OTP) memory cells. The size of the trimming current (Trimming Current) is usually related to the size of the corresponding switch. Therefore, when a large trimming current needs to be generated in the fuse circuit, the size of the switch must also increase accordingly, which cannot make the traditional fuse circuit The production area is effectively reduced. Contents of the invention [0003] An embodiment of the present invention provides a fuse circuit, thereby avoiding the situation that the fuse circuit is susceptible to transient noise and malfunctions. [0004] A technical aspect of the present invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C17/16G11C17/18
Inventor 赖明芳陈哲宏
Owner NUVOTON