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A power-on and power-off reset control circuit and computer

A control circuit and power reset technology, which is applied in the field of power-on and power-off reset control circuits and computers, can solve problems such as data errors and inability to protect MCU data, and achieve the effect of avoiding data errors or loss

Inactive Publication Date: 2019-04-05
SHENZHEN PRAFLY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a power-on and power-off reset control circuit and a computer that can solve the above defects in view of the defect that the MCU cannot be protected for data when the power is off, resulting in data errors in the prior art.

Method used

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  • A power-on and power-off reset control circuit and computer
  • A power-on and power-off reset control circuit and computer
  • A power-on and power-off reset control circuit and computer

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Embodiment Construction

[0020] In order to make the purpose of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0021] Such as figure 1 As shown, in the logic diagram of the first embodiment of the power-on and power-off reset control circuit of the present invention, it includes an MCU 10, a power-on reset module 30 for resetting the MCU 10 after the MCU 10 is powered on, and a The power-down reset module 20 that resets the MCU 10 after the MCU 10 is powered off, and the power module 40, the power module 40 is used to provide bus voltage, MCU interface voltage, and MCU core voltage. The power module 40 provides power for the MCU 10, the power-down reset module 20, and the power-on reset module 30. When the MCU 10 is powered off, the power-...

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Abstract

The invention relates to a power-on and power-down reset control circuit and a computer. The power-on and power-down reset control circuit comprises an MCU, a power-on reset module, a power-down reset module and a power module. The power-on reset module is used for resetting the MCU after the MCU is powered on, the power-down reset module is used for resetting the MCU after the MCU is powered down, and the power module is used for providing bus voltages, MCU interface voltages and MCU core voltages. When the MCU is powered down, the power-down reset module forces the MCU to be reset and stop working before the MCU interface voltages and the MCU core voltages of the power module are powered down. According to the power-on and power-down reset control circuit, after the MCU is powered down, the MCU is reset through the power-down reset module, and data errors or missing is avoided.

Description

Technical field [0001] The invention relates to a protection circuit of an MCU, and more specifically, to a power-on and power-off reset control circuit and a computer. Background technique [0002] With the rapid development of computer technology, the application of computers has become more and more extensive, and the requirements for computers have become higher and higher. Usually, the design of MCU (Micro Control Unit) in computers only includes the above Electric reset design, this design can meet most of the needs, but in some demanding applications, it is also necessary to consider the power-down protection of the MCU to avoid the malfunction caused by the MCU due to the unstable level during the power-off process The flash data is lost, and the external interface data is wrong, so as to avoid the need to maintain the system after power failure and re-power on. Therefore, since power failure protection is not considered in the prior art, the MCU will make an error when ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/24
Inventor 阮仕涛
Owner SHENZHEN PRAFLY TECH