CN104883164A - Reset circuit and electronic device equipped with same - Google Patents
Reset circuit and electronic device equipped with same Download PDFInfo
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- CN104883164A CN104883164A CN201510229338.9A CN201510229338A CN104883164A CN 104883164 A CN104883164 A CN 104883164A CN 201510229338 A CN201510229338 A CN 201510229338A CN 104883164 A CN104883164 A CN 104883164A
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Abstract
The invention discloses a reset circuit and an electronic device equipped with same. The reset circuit comprises at least one switch branch, a control branch, and a time delay branch. One end of each switch branch is connected with a reset trigger end. The other end of each switch branch is connected with one end of the control branch. The other end of the control branch is connected with one end of the time delay branch. The other end of the time delay branch is connected with a system control end. The reset circuit uses discrete devices to achieve the at least one switch branch, the control branch, and the time delay branch so as to reset an electronic product in a time delayed manner. Not only is design cost reduced, but also the reset circuit designed through the discrete devices is completely powered off and consumes no electric power when an electronic product is not reset.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly a kind of reset circuit and there is the electronic equipment of this circuit.
Background technology
Along with the development of power electronic technology and the continuous lifting of production technology thereof, each class of electronic devices emerges in an endless stream.Current increasing electronic product volume weight is tending towards small-sized light thinning, thus makes laid-up more and more difficult.Especially when product occur crash and when cannot reset, product cannot use.But, usually adopt Special reset IC to realize reset function in prior art, such as: the reset IC that pulse exports; This reset IC does not need to increase peripheral circuit and can realize shutting down or resetting and effectively distinguish resetting and other operating functions etc. simultaneously.
But, in inventor's design of electronic devices process, find that in prior art, at least there are the following problems:
Not only use cost is higher for the Special reset IC adopted in prior art, and under product open state, is in "on" position due to reset IC always, thus increases the power consumption of product.
Summary of the invention
In view of the above problems, proposing the present invention to provide a kind of overcomes the problems referred to above or solves the problem at least in part, and technical scheme of the present invention is achieved in that
On the one hand, the invention provides a kind of reset circuit, comprising: at least one way switch branch road, controlling brancher and time delay branch road;
Described switching branches one termination reset trigger end, another termination controlling brancher one end;
Time delay branch road one end described in another termination of described controlling brancher;
Described time delay branch road other end Systematical control end.
Preferably, when described reset circuit comprises double switch branch road; Described double switch branch road is respectively: when the first switching branches and second switch branch road;
Described first switching branches comprises: the 7th resistance and second switch pipe;
Described second switch branch road comprises: the 8th resistance and the first switching tube;
Described 7th resistance one end respectively with described reset trigger end KEY_IN, described second switch pipe pin one be connected; Described 7th resistance other end ground connection; Described second switch pipe pin two connects described first switching tube pin 3; Described second switch pipe pin 3 connects described controlling brancher;
Described 8th resistance one end respectively with described reset trigger end USB_IN, described first switching tube pin one be connected; Described 8th resistance other end ground connection; Described first switching tube pin two ground connection.
Preferably, described controlling brancher comprises: the first resistance, the second resistance and the 3rd switching tube;
Described first resistance one termination power VCC, the other end is connected with described second switch pipe pin the 3, three switching tube pin one respectively;
Described second resistance one termination power VCC, the other end respectively with described 3rd switching tube pin 3, reset signal output RESET be connected;
Described 3rd switching tube pin two ground connection.
Preferably, described time delay branch road comprises: the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity and the first amplifier;
Described 3rd resistance one end meets described reset signal output RESET respectively, described 5th resistance one end, described first amplifier pin 5, described second electric capacity one end;
The described 3rd resistance other end connects described 4th resistance one end respectively, described first amplifier pin one;
Described second electric capacity other end ground connection;
Described 4th resistance other end ground connection;
The described 5th resistance other end connects described 6th resistance one end respectively, is first electric capacity one end;
Described first electric capacity other end ground connection;
First amplifier pin 3 described in described 6th another termination of resistance;
Described first amplifier pin two ground connection;
Described first amplifier pin 4 connects described Systematical control end.
Preferably, described 5th resistance and the first capacitance are configured according to the latency requirement of reset circuit.
The invention provides a kind of electronic equipment, comprising: as above reset circuit described in any one.
Technical scheme of the present invention is by adopting described at least one way switch branch road of discrete device design, controlling brancher and time delay branch road realize the reset function of electronic product, thus not only reduce design cost, and reset circuit complete power-off when electronic product does not reset of discrete device design, do not have electric energy loss to reduce the power consumption of whole electronic product.
Accompanying drawing explanation
A kind of reset circuit structural representation that Fig. 1 provides for the embodiment of the present invention;
The switching branches of a kind of reset circuit that Fig. 2 provides for the embodiment of the present invention and controlling brancher circuit diagram;
The time delay subcircuits figure of a kind of reset circuit that Fig. 3 provides for the embodiment of the present invention;
A kind of electronic devices structure schematic diagram that Fig. 4 provides for the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As a kind of reset circuit structural representation that Fig. 1 provides for being depicted as the embodiment of the present invention; This reset circuit comprises: at least one way switch branch road, controlling brancher and time delay branch road;
Described switching branches one termination reset trigger end, another termination controlling brancher one end;
Time delay branch road one end described in another termination of described controlling brancher;
Described time delay branch road other end Systematical control end.
Based on above embodiment, as shown in Figures 2 and 3, be a kind of reset circuit figure that the embodiment of the present invention provides; When described reset circuit comprises double switch branch road, described reset circuit comprises: the first switching branches, second switch branch road, controlling brancher and time delay branch road;
Described first switching branches comprises: the 7th resistance R7 and second switch pipe Q2;
Described second switch branch road comprises: the 8th resistance R8 and the first switching tube Q1;
Described controlling brancher comprises: the first resistance R1, the second resistance R2 and the 3rd switching tube Q3;
Described time delay branch road comprises: the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first electric capacity C1, the second electric capacity C2 and the first amplifier U1;
Described 7th resistance R7 one end respectively with described reset trigger end KEY_IN, described second switch pipe Q2 pin one be connected; Described 7th resistance R7 other end ground connection; Described second switch pipe Q2 pin two connects described first switching tube Q1 pin 3; Described second switch pipe Q2 pin 3 connects first resistance R1 one end of described controlling brancher respectively, described 3rd switching tube Q3 pin one;
Described 8th resistance R8 one end respectively with described reset trigger end USB_IN, described first switching tube Q1 pin one be connected; Described 8th resistance R8 other end ground connection; Described first switching tube Q1 pin two ground connection.
Described first resistance R1 mono-termination power VCC, the other end is connected with described second switch pipe Q2 pin the 3, three switching tube Q3 pin one respectively;
Described second resistance R2 mono-termination power VCC, the other end respectively with described 3rd switching tube Q3 pin 3, reset signal output RESET be connected;
Described 3rd switching tube Q3 pin two ground connection.
Described 3rd resistance R3 one end meets described reset signal output RESET respectively, described 5th resistance R5 one end, described first amplifier U1 pin 5, described second electric capacity C2 one end;
The described 3rd resistance R3 other end connects described 4th resistance R4 one end respectively, described first amplifier U1 pin one;
Described second electric capacity C2 other end ground connection;
Described 4th resistance R4 other end ground connection;
The described 5th resistance R5 other end connects described 6th resistance R6 one end respectively, is first electric capacity C1 one end;
Described first electric capacity C1 other end ground connection;
First amplifier U1 pin 3 described in described 6th another termination of resistance R6;
Described first amplifier U1 pin two ground connection;
Described first amplifier U1 pin 4 meets described Systematical control end SYS_RTSB.
It should be noted that, described 5th resistance R5 and the first electric capacity C1 value are configured according to the latency requirement of reset circuit.
Based on above circuit, operation principle of the present invention is described in detail;
Such as: when setting model is for inserting reset trigger end USB_IN charging as USB, the delay time that button presses setting simultaneously just can reset later; Specific as follows, when USB inserts, USN_IN is high level, and switching tube Q1 opens, switching tube Q1 is in constant current district, if now pushed button, reset trigger end KEY_IN is high level, then switching tube Q2 opens, switching tube Q2 is also in constant current district, then the D pole of second switch pipe Q2 is dragged down, and the G pole of described 3rd switching tube Q3 becomes low, and described 3rd switching tube Q3 closes, reset signal output RESET, owing to there being the second resistance R2 pull-up, draws high by reset signal output RESET.
After reset signal output RESET draws high, reset signal output RESET powers to the first amplifier U1, reset signal output RESET charges to the first electric capacity C1 by the 5th resistance R5 simultaneously, 5th resistance R5 resistance and the first electric capacity C1 capacitance flexible configuration as required, the configuration of this capacitance-resistance value determines the size of delay time.When charging to the first electric capacity C1, pin 3 voltage of the first amplifier U1 is by 0V, now, because the first amplifier U1 positive input 1 voltage is higher than the first amplifier U1 negative input 3 voltage, therefore Systematical control end SYS_RSTB exports high level, along with charging is more, pin 3 voltage of the first amplifier U1 is higher, when pin one higher than the first amplifier U1 of pin 3 voltage of the first amplifier U1, now because the first amplifier U1 negative input 3 voltage is higher than positive input 1 voltage, amplifier output switching activity, output low level, realizes resetting.
When reset trigger end USB_IN and/or reset trigger end KEY_IN wherein 1 and/or 2 all do not press time, switching tube Q1 and Q2 not conducting, the G pole of switching tube Q3 is high level under the effect of the first resistance R1 pull-up, now switching tube Q3 conducting, reset signal output RESET is dragged down, and cannot power to U1, and now Systematical control end SYS_RSTB exports high level, system worked well, does not reset.
It should be noted that, because electronic product in prior art is when needing by carrying out hardware reset manually after deadlock, simultaneously because product button is fewer, if be easy to reach reset condition, system can reset through constant error, thus puzzlement can be brought to user's use, when therefore reset is set, at least one switching branches can be set, the preferred embodiment of the present invention adopts 2 roads or variable connector branch road to control and the method resetted time of delay, ensures that product hand-reset can there will not be again situation about by mistake resetting after crashing.
As shown in Figure 4, be a kind of electronic devices structure schematic diagram that the embodiment of the present invention provides; This electronic equipment comprises: as above reset circuit described in any one.
Technical scheme of the present invention is by adopting described at least one way switch branch road of discrete device design, controlling brancher and time delay branch road realize the reset function of electronic product, thus not only reduce design cost, and reset circuit complete power-off when electronic product does not reset of discrete device design, do not have electric energy loss to reduce the power consumption of whole electronic product.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a reset circuit, is characterized in that, comprising: at least one way switch branch road, controlling brancher and time delay branch road;
Described switching branches one termination reset trigger end, another termination controlling brancher one end;
Time delay branch road one end described in another termination of described controlling brancher;
Described time delay branch road other end Systematical control end.
2. reset circuit according to claim 1, is characterized in that, when described reset circuit comprises double switch branch road; Described double switch branch road is respectively: when the first switching branches and second switch branch road;
Described first switching branches comprises: the 7th resistance and second switch pipe;
Described second switch branch road comprises: the 8th resistance and the first switching tube;
Described 7th resistance one end respectively with described reset trigger end KEY_IN, described second switch pipe pin one be connected; Described 7th resistance other end ground connection; Described second switch pipe pin two connects described first switching tube pin 3; Described second switch pipe pin 3 connects described controlling brancher;
Described 8th resistance one end respectively with described reset trigger end USB_IN, described first switching tube pin one be connected; Described 8th resistance other end ground connection; Described first switching tube pin two ground connection.
3. reset circuit according to claim 2, is characterized in that, described controlling brancher comprises: the first resistance, the second resistance and the 3rd switching tube;
Described first resistance one termination power VCC, the other end is connected with described second switch pipe pin the 3, three switching tube pin one respectively;
Described second resistance one termination power VCC, the other end respectively with described 3rd switching tube pin 3, reset signal output RESET be connected;
Described 3rd switching tube pin two ground connection.
4. reset circuit according to claim 3, is characterized in that, described time delay branch road comprises: the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity and the first amplifier;
Described 3rd resistance one end meets described reset signal output RESET respectively, described 5th resistance one end, described first amplifier pin 5, described second electric capacity one end;
The described 3rd resistance other end connects described 4th resistance one end respectively, described first amplifier pin one;
Described second electric capacity other end ground connection;
Described 4th resistance other end ground connection;
The described 5th resistance other end connects described 6th resistance one end respectively, is first electric capacity one end;
Described first electric capacity other end ground connection;
First amplifier pin 3 described in described 6th another termination of resistance;
Described first amplifier pin two ground connection;
Described first amplifier pin 4 connects described Systematical control end.
5. reset circuit according to claim 4, is characterized in that, described 5th resistance and the first capacitance are configured according to the latency requirement of reset circuit.
6. an electronic equipment, is characterized in that, comprising: reset circuit, and described reset circuit comprises: at least one way switch branch road, controlling brancher and time delay branch road;
Described switching branches one termination reset trigger end, another termination controlling brancher one end;
Time delay branch road one end described in another termination of described controlling brancher;
Described time delay branch road other end Systematical control end.
7. electronic equipment according to claim 6, is characterized in that, when described reset circuit comprises double switch branch road; Described double switch branch road is respectively: when the first switching branches and second switch branch road;
Described first switching branches comprises: the 7th resistance and second switch pipe;
Described second switch branch road comprises: the 8th resistance and the first switching tube;
Described 7th resistance one end respectively with described reset trigger end KEY_IN, described second switch pipe pin one be connected; Described 7th resistance other end ground connection; Described second switch pipe pin two connects described first switching tube pin 3; Described second switch pipe pin 3 connects described controlling brancher;
Described 8th resistance one end respectively with described reset trigger end USB_IN, described first switching tube pin one be connected; Described 8th resistance other end ground connection; Described first switching tube pin two ground connection.
8. electronic equipment according to claim 7, is characterized in that, described controlling brancher comprises: the first resistance, the second resistance and the 3rd switching tube;
Described first resistance one termination power VCC, the other end is connected with described second switch pipe pin the 3, three switching tube pin one respectively;
Described second resistance one termination power VCC, the other end respectively with described 3rd switching tube pin 3, reset signal output RESET be connected;
Described 3rd switching tube pin two ground connection.
9. electronic equipment according to claim 8, is characterized in that, described time delay branch road comprises: the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the first electric capacity, the second electric capacity and the first amplifier;
Described 3rd resistance one end meets described reset signal output RESET respectively, described 5th resistance one end, described first amplifier pin 5, described second electric capacity one end;
The described 3rd resistance other end connects described 4th resistance one end respectively, described first amplifier pin one;
Described second electric capacity other end ground connection;
Described 4th resistance other end ground connection;
The described 5th resistance other end connects described 6th resistance one end respectively, is first electric capacity one end;
Described first electric capacity other end ground connection;
First amplifier pin 3 described in described 6th another termination of resistance;
Described first amplifier pin two ground connection;
Described first amplifier pin 4 connects described Systematical control end.
10. electronic equipment according to claim 9, is characterized in that, described 5th resistance and the first capacitance are configured according to the latency requirement of reset circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229338.9A CN104883164B (en) | 2015-05-07 | 2015-05-07 | A kind of reset circuit and electronic equipment with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229338.9A CN104883164B (en) | 2015-05-07 | 2015-05-07 | A kind of reset circuit and electronic equipment with the circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN104883164A true CN104883164A (en) | 2015-09-02 |
| CN104883164B CN104883164B (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510229338.9A Active CN104883164B (en) | 2015-05-07 | 2015-05-07 | A kind of reset circuit and electronic equipment with the circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849921A (en) * | 2017-03-28 | 2017-06-13 | 歌尔科技有限公司 | A kind of hardware reset circuit and electronic product |
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| CN103338029A (en) * | 2013-06-20 | 2013-10-02 | 歌尔声学股份有限公司 | Automatic reset device |
| CN103440027A (en) * | 2013-09-03 | 2013-12-11 | 深圳市芯海科技有限公司 | Singlechip and on-chip power-on reset circuit thereof |
| CN103825593A (en) * | 2014-03-18 | 2014-05-28 | 青岛歌尔声学科技有限公司 | Reset signal generating circuit and electronic equipment |
| CN104407687A (en) * | 2014-12-09 | 2015-03-11 | 青岛歌尔声学科技有限公司 | Reset circuit |
| CN204794935U (en) * | 2015-05-07 | 2015-11-18 | 青岛歌尔声学科技有限公司 | Reset circuit and have electronic equipment of this circuit |
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2015
- 2015-05-07 CN CN201510229338.9A patent/CN104883164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338029A (en) * | 2013-06-20 | 2013-10-02 | 歌尔声学股份有限公司 | Automatic reset device |
| CN103440027A (en) * | 2013-09-03 | 2013-12-11 | 深圳市芯海科技有限公司 | Singlechip and on-chip power-on reset circuit thereof |
| CN103825593A (en) * | 2014-03-18 | 2014-05-28 | 青岛歌尔声学科技有限公司 | Reset signal generating circuit and electronic equipment |
| CN104407687A (en) * | 2014-12-09 | 2015-03-11 | 青岛歌尔声学科技有限公司 | Reset circuit |
| CN204794935U (en) * | 2015-05-07 | 2015-11-18 | 青岛歌尔声学科技有限公司 | Reset circuit and have electronic equipment of this circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849921A (en) * | 2017-03-28 | 2017-06-13 | 歌尔科技有限公司 | A kind of hardware reset circuit and electronic product |
| CN106849921B (en) * | 2017-03-28 | 2023-08-04 | 歌尔科技有限公司 | Hardware reset circuit and electronic product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104883164B (en) | 2018-09-04 |
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Effective date of registration: 20240513 Address after: 266104 No. 500, Songling Road, Laoshan District, Qingdao, Shandong Patentee after: GOERTEK TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 266061 5, 3 building, Fortune Plaza, 18 Qinling Mountains Road, Laoshan District, Qingdao, Shandong. Patentee before: QINGDAO GOERTEK TECHNOLOGY Co.,Ltd. Country or region before: China |
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