CN205566252U

CN205566252U - Reset control circuit

Info

Publication number: CN205566252U
Application number: CN201620345206.2U
Authority: CN
Inventors: 胡立鸣
Original assignee: Xiangshan Jieerde Intelligent Science and Technology Ltd
Current assignee: Dongguan Han Yi Electronics Co., Ltd.
Priority date: 2016-04-21
Filing date: 2016-04-21
Publication date: 2016-09-07
Anticipated expiration: 2026-04-21

Abstract

The utility model discloses a reset control circuit, including chip U1, chip U2, key switch SB, resistance R1 and electric capacity C1, chip U1 pin 1 and ground connection are connected to key switch SB one end, chip U1 pin 5 is connected to the key switch SB other end, chip U1 pin 4 and grounded capacitance C1 are connected respectively to chip U1 pin 3, ground resistance R3 is connected respectively to chip U1 pin 2, chip U2 pin 1 and chip U2 pin 2, output V1 and resistance R1 are connected respectively to chip U2 pin 7, the resistance R1 other end connect respectively VCC and resistance R2, chip U2 pin 5 and output V2 are connected respectively to the resistance R2 other end, chip U1 adopts PT8A610X, and chip U2 adopts chip 74HC125. The utility model discloses reset control circuit adopts chip PT8A610X cooperation chip 74HC125 to control, and a plurality of systems that can reset simultaneously do not adopt traditional capacitanc reset mode moreover, have avoided the problem of mentioning in the background art.

Description

A kind of reset control circuit

Technical field

This utility model relates to a kind of reset circuit, specifically a kind of reset control circuit.

Background technology

The reset circuit of prior art is connected by two electric capacity and a resistance and forms, the reset circuit of said structure has the disadvantage that owing to this reset circuit does not has reset delay, i.e. by time delay, the electric charge in electric capacity is discharged complete, if the most the electric charge in electric capacity not being discharged complete, it will necessarily affect the reset of next time, thus affects the functional reliability of this reset circuit；One system can only be resetted by the most traditional reset circuit, narrow application range.

Utility model content

The purpose of this utility model is to provide a kind of reset control circuit, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, the following technical scheme of this utility model offer:

A kind of reset control circuit, including chip U1, chip U2, key switch SB, resistance R1 and electric capacity C1, described key switch SB one end connects chip U1 pin 1 ground connection, the key switch SB other end connects chip U1 pin 5, chip U1 pin 3 connects chip U1 pin 4 and ground capacity C1 respectively, chip U1 pin 2 connects earth resistance R3 respectively, chip U2 pin 1 and chip U2 pin 2, chip U2 pin 7 connects outfan V1 and resistance R1 respectively, the resistance R1 other end connects power supply VCC and resistance R2 respectively, the resistance R2 other end connects chip U2 pin 5 and outfan V2 respectively；Chip U1 uses PT8A610X, chip U2 to use chip 74HC125.

As further program of the utility model: described power supply VCC voltage is 3.3V.

As this utility model further scheme: described outfan V1 and outfan V2 connects different chips to be resetted respectively.

Compared with prior art, the beneficial effects of the utility model are: this utility model reset control circuit uses chip PT8A610X to coordinate chip 74HC125 to be controlled, can be resetted multiple system simultaneously, and do not use traditional condenser type reset mode, it is to avoid the problem mentioned in background technology.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of reset control circuit.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

Refer to Fig. 1, in this utility model embodiment, a kind of reset control circuit, including chip U1, chip U2, key switch SB, resistance R1 and electric capacity C1, described key switch SB one end connects chip U1 pin 1 ground connection, the key switch SB other end connects chip U1 pin 5, chip U1 pin 3 connects chip U1 pin 4 and ground capacity C1 respectively, chip U1 pin 2 connects earth resistance R3 respectively, chip U2 pin 1 and chip U2 pin 2, chip U2 pin 7 connects outfan V1 and resistance R1 respectively, the resistance R1 other end connects power supply VCC and resistance R2 respectively, the resistance R2 other end connects chip U2 pin 5 and outfan V2 respectively；Chip U1 uses PT8A610X, chip U2 to use chip 74HC125；Described power supply VCC voltage is 3.3V；Described outfan V1 and outfan V2 connects different chips to be resetted respectively.

Operation principle of the present utility model is: refer to Fig. 1, when reset button switch SB presses, the 2 foot output reset signals of U1, i.e. output low level, causes two 74HCl25 conductings, and outfan V1 and the equal output low level of outfan V2 make chip reset to be resetted, under chip normal operation to be resetted, the 2 foot output high level of U1,74HCl25 ends, and outfan V1 and outfan V2 is pulled up as high level by pull-up resistor R1, R2.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.

In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.

Claims

1. a reset control circuit, including chip U1, chip U2, key switch SB, resistance R1 and electric capacity C1, it is characterized in that, described key switch SB one end connects chip U1 pin 1 ground connection, the key switch SB other end connects chip U1 pin 5, chip U1 pin 3 connects chip U1 pin 4 and ground capacity C1 respectively, chip U1 pin 2 connects earth resistance R3 respectively, chip U2 pin 1 and chip U2 pin 2, chip U2 pin 7 connects outfan V1 and resistance R1 respectively, the resistance R1 other end connects power supply VCC and resistance R2 respectively, the resistance R2 other end connects chip U2 pin 5 and outfan V2 respectively；Chip U1 uses PT8A610X, chip U2 to use chip 74HC125.

Reset control circuit the most according to claim 1, it is characterised in that described power supply VCC voltage is 3.3V.

Reset control circuit the most according to claim 1, it is characterised in that described outfan V1 and outfan V2 connects different chips to be resetted respectively.