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Reset circuit

A reset circuit and follower circuit technology, applied in the computer field, can solve problems such as CPU crashes, malfunctions, and short reset times

Inactive Publication Date: 2021-01-15
SHENZHEN MINIEYE INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the current electronic products are controlled by the central processing unit (CPU). Due to the instability of the working voltage, if the CPU does not perform a reset operation when the CPU is turned on and powered on, when the CPU is working in a fluctuating state of power, it is easy to cause the CPU Crash or malfunction
[0003] The ordinary reset and power-on circuit has only one reset chip. Although the reset operation can be realized, the reset time is short and generally limited to the millisecond level, which cannot meet the user's needs for a reset circuit with a longer reset time.

Method used

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Embodiment Construction

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0034] It can be understood that the terms "first", "second", etc. used in this application may be used t...

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Abstract

The invention relates to a reset circuit. The reset circuit comprises a charging and discharging circuit, a follower circuit and a reset signal circuit. Wherein the charging and discharging circuit comprises a resistor R1, a capacitor C1 and a power supply port J1, and the reset signal circuit comprises a reset chip. When the circuit is started and powered on, the voltage of the capacitor C1 rises, the input voltage of the control end of the follower circuit rises, and the output voltage of the follower circuit rises along with the input voltage of the control end, namely, the voltage of the input end of the reset chip follows the voltage of the capacitor C1. The reset time can be adjusted by adjusting the time constant of the charging and discharging circuit. Due to the existence of the follower circuit, the resistor R1 is not influenced by the input impedance of the pin of the reset chip, the value range of the resistor R1 is increased, and the adjustment range of the reset time canbe further improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a reset circuit with a relatively long reset time. Background technique [0002] Most of the current electronic products are controlled by the central processing unit (CPU). Due to the instability of the working voltage, if the CPU does not perform a reset operation when the CPU is turned on and powered on, when the CPU is working in a fluctuating state of power, it is easy to cause the CPU Work freezes or malfunctions. [0003] The ordinary reset and power-on circuit has only one reset chip. Although the reset operation can be realized, the reset time is short and generally limited to the millisecond level, which cannot meet the user's needs for a reset circuit with a longer reset time. Contents of the invention [0004] Based on this, it is necessary to provide a reset circuit with a longer reset time. [0005] In a first aspect, a reset circuit is provided, including: ...

Claims

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Application Information

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IPC IPC(8): H03K17/22
CPCH03K17/22G05B2219/25257
Inventor 钱航刘国清杨荣德刘文浩
Owner SHENZHEN MINIEYE INNOVATION TECH CO LTD
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