CN207281214U - A kind of Type-C interfaces and its connection detection circuit - Google Patents
A kind of Type-C interfaces and its connection detection circuit Download PDFInfo
- Publication number
- CN207281214U CN207281214U CN201720597502.6U CN201720597502U CN207281214U CN 207281214 U CN207281214 U CN 207281214U CN 201720597502 U CN201720597502 U CN 201720597502U CN 207281214 U CN207281214 U CN 207281214U
- Authority
- CN
- China
- Prior art keywords
- detection
- type
- interfaces
- switch
- interface control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Power Sources (AREA)
Abstract
The utility model belongs to interface connecting detection technical field, there is provided a kind of Type C interface and its connection detection circuit.In the utility model, the connection detection circuit of Type C interface includes interface control module, first detection module and the second detection module, when UFP equipment is connected to Type C interface, the level of the detection output of first detection module changes to trigger the external interrupt of interface control module；When DFP equipment is connected to Type C interface, the level of the detection output of the second detection module changes to trigger the external interrupt of interface control module.When external equipment is connected to Type C interface, level changes to trigger the external interrupt of interface control module, external interrupt wakeup interface control module, therefore, interface control module need not be constantly in the change that working status carrys out detection node magnitude of voltage, and the power consumption of interface control module is minimized.
Description
Technical field
The utility model belongs to interface connecting detection technical field, more particularly to a kind of Type-C interfaces and its connecting detection
Circuit.
Background technology
Type-C interfaces are a kind of connecting interfaces of USB interface, it can be inserted into regardless of tow sides, support USB standard
Charging, data transfer, the function such as display output.
At present, Type-C interfaces are all detected comprising an interface control chip come the insertion to external equipment, existing
The connecting detections of Type-C interfaces be divided into the connecting detection (as shown in Figure 1a) of UFP (Upstream Facing Port) equipment
With the connecting detection (as shown in Figure 1 b) of DFP (Downstream Facing Port) equipment.In the UFP equipment shown in Fig. 1 a
In connecting detection, when no UFP equipment connects, the level of A nodes is high electricity on CC (Configuration Channel) line
It is flat；When there is the connection of UFP equipment, the voltage of A nodes is about 1.7V on CC lines, and in Digital Logic, and 1.7V voltages are neither patrol
0 and NOT logic 1 are collected, therefore, interface control chip can not differentiate the change of A node level by Digital Logic, can only pass through
Its sampling end gathers the magnitude of voltage of A nodes, according to the change of magnitude of voltage to determine whether there is external equipment connection, i.e., ought have outside
When equipment is connected to Type-C interfaces, A node voltage values just change, and are realized by detecting the change of A node voltage values
The connecting detection of Type-C interfaces.The connecting detection principle of DFP equipment is also such.In practical applications, interface control chip without
When method precognition has external equipment insertion, so interface control chip is unable to dormancy, it is necessary to which always on gather A nodes
Magnitude of voltage, thus cause the power consumption of interface control chip higher.Therefore, the interface control chip in existing Type-C interfaces because
The magnitude of voltage of certain node on always on detection CC lines and there are power consumption it is higher the problem of.
Utility model content
The purpose of this utility model is to provide a kind of connection detection circuit of Type-C interfaces, it is intended to solves existing
Interface control chip in Type-C interfaces is higher there are power consumption because of the magnitude of voltage of certain node on always on detection CC lines
Problem.
The utility model is realized in this way a kind of connection detection circuit of Type-C interfaces, including interface control module,
First detection module and the second detection module；
The first control terminal and the second control terminal of the interface control module are controlled with the first detection module respectively
End is connected with the controlled end of the second detection module, the detection output of the first detection module and second detection module
Detection output be connected to the external interrupt end of the interface control module altogether；
When having detected whether that UFP equipment is connected with Type-C interfaces, the interface control module output first is enabled
Signal is so that first detection module perform detection, when UFP equipment is connected to the Type-C interfaces, the first detection module
The level of detection output change to trigger the external interrupt of the interface control module；
When having detected whether that DFP equipment is connected with Type-C interfaces, the interface control module output second is enabled
Signal is so that the second detection module perform detection, when DFP equipment is connected to the Type-C interfaces, second detection module
The level of detection output change to trigger the external interrupt of the interface control module.
In the utility model, the connection detection circuit of Type-C interfaces includes interface control module, first detection module
And second detection module, when UFP equipment is connected to Type-C interfaces, the level of the detection output of first detection module occurs
Change to trigger the external interrupt of interface control module；When DFP equipment is connected to Type-C interfaces, the inspection of the second detection module
The level for surveying output terminal changes to trigger the external interrupt of interface control module.When external equipment is connected to Type-C interfaces
When, level changes to trigger the external interrupt of interface control module, and external interrupt wakeup interface control module, therefore, connects
Mouth control module need not be constantly in the change that working status carrys out detection node magnitude of voltage, and the power consumption of interface control module is dropped
It is low.
Brief description of the drawings
Fig. 1 a are the exemplary circuit figures of the UFP equipment connection detection circuit for the Type-C interfaces that the prior art provides；
Fig. 1 b are the exemplary circuit figures of the DFP equipment connection detection circuit for the Type-C interfaces that the prior art provides；
Fig. 2 is the structure chart of the connection detection circuit for the Type-C interfaces that the utility model embodiment provides；
Fig. 3 be the Type-C interfaces that the utility model embodiment provides connection detection circuit in first detection module show
Example circuit diagram；
Fig. 4 be the Type-C interfaces that another embodiment of the utility model provides connection detection circuit in first detection module
Exemplary circuit figure；
Fig. 5 be the Type-C interfaces that the utility model embodiment provides connection detection circuit in second detection module show
Example circuit diagram；
Fig. 6 be the Type-C interfaces that another embodiment of the utility model provides connection detection circuit in the second detection module
Exemplary circuit figure.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
Fig. 2 shows the structure of the connection detection circuit for the Type-C interfaces that the utility model embodiment provides, in order to just
In explanation, illustrate only with the relevant part of the utility model embodiment, details are as follows：
As one preferred embodiment of the utility model, the connection detection circuit of Type-C interfaces includes interface control module
100th, 200 and second detection module 300 of first detection module.
Wherein, interface control module 100 is the interface control chip in existing Type-C interfaces.
The first control terminal and the second control terminal of interface control module 100 controlled end with first detection module 200 respectively
It is connected with the controlled end of the second detection module 300, the detection output of first detection module 200 and the second detection module 300
Detection output be connected to the external interrupt end INT of interface control module 100 altogether.
When having detected whether that UFP equipment is connected with Type-C interfaces, first enabled letter of the output of interface control module 100
Number so that 200 perform detection of first detection module, when UFP equipment is connected to Type-C interfaces, the inspection of first detection module 200
The level for surveying output terminal changes to trigger the external interrupt of interface control module 100.
Specifically, when UFP equipment is connected to Type-C interfaces, the level of the detection output of first detection module 200
Low level is changed into from high level, the external interrupt of the mutation triggering interface control module 100 of the level, interface control module 100
It is waken up, start to process external interrupt program.
When having detected whether that DFP equipment is connected with Type-C interfaces, second enabled letter of the output of interface control module 100
Number so that 300 perform detection of the second detection module, when DFP equipment is connected to Type-C interfaces, the inspection of the second detection module 300
The level for surveying output terminal changes to trigger the external interrupt of interface control module 100.
Specifically, when DFP equipment is connected to Type-C interfaces, the level of the detection output of first detection module 200
High level is changed into from low level, the external interrupt of the mutation triggering interface control module 100 of the level, interface control module 100
It is waken up, start to process external interrupt program.
In the present embodiment, when external equipment is connected to Type-C interfaces, the detection output electricity of first detection module 200
Flat or the second detection module 300 detection output level is undergone mutation, outside the mutation triggering interface control module 100 of level
Portion is interrupted, and interface control module 100 is waken up, start to process external interrupt program.Therefore, interface control module 100 is without beginning
The change of whole open detection node voltage value, reduces power consumption.
Fig. 3 and Fig. 4 respectively illustrates the first detection in the connection detection circuit of the utility model embodiment Type-C interfaces
The circuit structure of module 200, for convenience of description, illustrate only with the relevant part of the utility model embodiment, details are as follows：
As one embodiment of the utility model, as shown in figure 3, first detection module 200 includes：
First current source A1, first switch S1, first resistor R1；
The input terminal of first current source A1 is connected with power supply VCC, and the input terminal of first switch S1 is with first resistor R1's
First end is connected to the output terminal of the first current source A1 altogether, and the output terminal of first switch S1 connects shape altogether with the second end of first resistor R1
Into the detection output of first detection module 200, the controlled end of first switch S1 is the controlled end of first detection module 200；
When having detected whether that UFP equipment 400 is connected with Type-C interfaces, the output of interface control module 100 first makes
Can signal so that first switch S1 disconnect, when UFP equipment 400 is connected to Type-C interfaces, the detection of first detection module 200
The level of output terminal changes to trigger the external interrupt of interface control module 100.
Specifically, first switch S1 can be metal-oxide-semiconductor, the resistance value of first resistor R1 is not less than 100K Ω, it is preferred that the first electricity
The resistance value for hindering R1 is 470K Ω.
In the present embodiment, interface control module 100 control first switch S1 to disconnect with detected whether UFP equipment 400 with
Type-C interfaces are connected, after detecting that UFP equipment 400 is connected to Type-C interfaces, control first switch S1 closures.UFP
Equipment 400 is the resistance that resistance value is 5.1K Ω, and UFP equipment 400 is connected to Type-C interfaces, i.e. 5.1K Ω resistance is connected to first
The detection output of detection module 200.Before 5.1K Ω resistance is connected to the detection output of first detection module 200, the
The level of the detection output of one detection module 200 is high level, and the inspection of first detection module 200 is connected in 5.1K Ω resistance
When surveying output terminal, the level of the detection output of first detection module 200 is changed into low level, the change triggers of level from high level
The external interrupt of interface control module 100, interface control module 100 are waken up to handle external interrupt program.
As another embodiment of the utility model, as shown in figure 4, first detection module 200 includes：
Second current source A2, second switch S2, the 3rd switch S3 and second resistance R2；
The input terminal of second current source A2 is connected to power supply VCC altogether with the first end of second resistance R2, the second current source A2's
Output terminal is connected with the input terminal of second switch S2, and the second end of second resistance R2 is connected with the input terminal of the 3rd switch S3
Connect, the output terminal of the output terminal of second switch S2 and the 3rd switch S3 connect the detection output to form first detection module 200 altogether；
When having detected whether that UFP equipment 400 is connected with Type-C interfaces, the output of interface control module 100 first makes
Energy signal is so that second switch S2 is disconnected, the 3rd switch S3 is closed, and when UFP equipment 400 is connected to Type-C interfaces, first examines
The level for surveying the detection output of module 200 changes to trigger the external interrupt of interface control module 100.
Specifically, the switches of second switch S2 and the 3rd S3 can be metal-oxide-semiconductor, the resistance value of second resistance R2 is not less than 100K
Ω, it is preferred that the resistance value of second resistance R2 is 470K Ω.
In the present embodiment, interface control module 100 controls second switch S2 to disconnect, the 3rd switch S3 is closed to detect whether
There is UFP equipment 400 to be connected with Type-C interfaces, after detecting that UFP equipment 400 is connected to Type-C interfaces, control second
Switch S2 closures, the 3rd switch S3 is disconnected.UFP equipment 400 is the resistance that resistance value is 5.1K Ω, and UFP equipment 400 is connected to
Type-C interfaces, i.e. 5.1K Ω resistance are connected to the detection output of first detection module 200.Is connected in 5.1K Ω resistance
Before the detection output of one detection module 200, the level of the detection output of first detection module 200 is high level,
When 5.1K Ω resistance is connected to the detection output of first detection module 200, the electricity of the detection output of first detection module 200
It is flat that low level, the external interrupt of the change triggers interface control module 100 of level, interface control module 100 are changed into from high level
It is waken up to handle external interrupt program.
Fig. 5 and Fig. 6 respectively illustrates the second detection in the connection detection circuit of the utility model embodiment Type-C interfaces
The circuit structure of module 300, for convenience of description, illustrate only with the relevant part of the utility model embodiment, details are as follows：
As one embodiment of the utility model, as shown in figure 5, the second detection module 300 includes：
4th switch S4,3rd resistor R3 and the 4th resistance R4；
4th switch S4 input terminal and 3rd resistor R3 first end connect altogether to be formed the second detection module 300 detection it is defeated
Outlet, the output terminal of the 4th switch S4 and the second end of 3rd resistor R3 are connected to the first end of the 4th resistance R4, the 4th resistance altogether
The second end of R4 is connected with power supply；
When having detected whether that DFP equipment 500 is connected with Type-C interfaces, the output of interface control module 100 second makes
Energy signal is so that the 4th switchs S4 disconnections, when DFP equipment 500 is connected to Type-C interfaces, the detection of the second detection module 300
The level of output terminal changes to trigger the external interrupt of interface control module 100.
Specifically, the 4th switch S4 can be metal-oxide-semiconductor, the resistance value of 3rd resistor R3 is not less than 100K Ω, it is preferred that the 3rd electricity
The resistance value for hindering R3 is that the resistance value of 470K Ω, the 4th resistance R4 are 5.1K Ω.
In the present embodiment, interface control module 100 control the 4th switch S4 disconnect with detected whether DFP equipment 500 with
Type-C interfaces are connected, after detecting that DFP equipment 500 is connected to Type-C interfaces, the switch S4 closures of control the 4th.DFP
Equipment 500 is current source, and the input terminal of current source is connected with power supply VCC, and DFP equipment 500 is connected to Type-C interfaces, i.e., electric
The output terminal in stream source is connected to the detection output of the second detection module 300.The second detection module 300 is connected in current source
Before detection output, the level of the detection output of the second detection module 300 is low level, and the second inspection is connected in current source
When surveying the detection output of module 300, the level of the detection output of the second detection module 300 is changed into high level from low level,
The external interrupt of the change triggers interface control module 100 of level, interface control module 100 are waken up to handle external interrupt journey
Sequence.
As another embodiment of the utility model, as shown in fig. 6, the second detection module 300 includes：
5th switch S5, the 6th switch S6, the 5th resistance R5 and the 6th resistance R6；
5th switch S5 input terminal with the 6th switch S6 input terminal connect altogether to be formed the second detection module 300 detection it is defeated
Outlet, the output terminal of the 5th switch S5 are connected with the first end of the 5th resistance R5, the output terminal and the 6th electricity of the 6th switch S6
The first end of resistance R6 is connected, and the second end of the 5th resistance R5 and the second end of the 6th resistance R6 with being connected to power supply altogether；
When having detected whether that DFP equipment 500 is connected with Type-C interfaces, the output of interface control module 100 second makes
Energy signal is so that the 5th switch S5 is disconnected, the 6th switch S6 is closed, and when DFP equipment 500 is connected to Type-C interfaces, second examines
The level for surveying the detection output of module 300 changes to trigger the external interrupt of interface control module 100.
Specifically, the 5th switch S5 and the 6th switch S6 can be metal-oxide-semiconductor, the resistance value of the 6th resistance R6 is not less than 100K
Ω, it is preferred that the resistance value of the 6th resistance R6 is 470K Ω, and the resistance value of the 5th resistance R5 is 5.1K Ω.
In the present embodiment, the 5th switch S5 of the control of interface control module 100 is disconnected, the 6th switch S6 is closed to detect whether
There is DFP equipment 500 to be connected with Type-C interfaces, after detecting that DFP equipment 500 is connected to Type-C interfaces, control the 5th
Switch S5 closures, the 6th switch S6 is disconnected.DFP equipment 500 is current source, and the input terminal of current source is connected with power supply VCC,
DFP equipment 500 is connected to Type-C interfaces, i.e. the output terminal of current source is connected to the detection output of the second detection module 300.
Before current source is connected to the detection output of first detection module 200, the electricity of the detection output of the second detection module 300
Put down as low level, when current source is connected to the detection output of the second detection module 300, the detection of the second detection module 300
The level of output terminal is changed into high level, the external interrupt of the change triggers interface control module 100 of level, interface control from low level
Molding block 100 is waken up to handle external interrupt program.
Application advantage of the connection detection circuit based on above-mentioned Type-C interfaces in Type-C interfaces, the utility model is also
Provide a kind of Type-C interfaces of the connection detection circuit including above-mentioned Type-C interfaces.
In the utility model embodiment, the connection detection circuit of Type-C interfaces includes interface control module, the first inspection
Survey module and the second detection module, when UFP equipment is connected to Type-C interfaces, the electricity of the detection output of first detection module
It is flat to change to trigger the external interrupt of interface control module；When DFP equipment is connected to Type-C interfaces, the second detection mould
The level of the detection output of block changes to trigger the external interrupt of interface control module.When external equipment is connected to
During Type-C interfaces, level changes to trigger the external interrupt of interface control module, external interrupt wakeup Interface Controller mould
Block, therefore, interface control module need not be constantly in the change that working status carrys out detection node magnitude of voltage, interface control module
Power consumption is minimized.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. connection detection circuit of Type-C interfaces, it is characterised in that including interface control module, first detection module and Second detection module；The first control terminal and the second control terminal of the interface control module respectively with the controlled end of the first detection module and The controlled end of second detection module is connected, the detection output of the first detection module and the inspection of second detection module Survey the external interrupt end that output terminal is connected to the interface control module altogether；When having detected whether that UFP equipment is connected with Type-C interfaces, the interface control module exports the first enable signal So that first detection module perform detection, when UFP equipment is connected to the Type-C interfaces, the inspection of the first detection module The level for surveying output terminal changes to trigger the external interrupt of the interface control module；When having detected whether that DFP equipment is connected with Type-C interfaces, the interface control module exports the second enable signal So that the second detection module perform detection, when DFP equipment is connected to the Type-C interfaces, the inspection of second detection module The level for surveying output terminal changes to trigger the external interrupt of the interface control module.
- 2. the connection detection circuit of Type-C interfaces as claimed in claim 1, it is characterised in that the first detection module bag Include the first current source, first switch, first resistor：The input terminal of first current source is connected with power supply, and the of the input terminal of the first switch and the first resistor One end is connected to the output terminal of first current source altogether, and the output terminal of the first switch and the second end of the first resistor are total to Connect the detection output to form the first detection module, the controlled end of the first switch for the first detection module by Control end；When having detected whether that UFP equipment is connected with Type-C interfaces, the interface control module exports the first enable signal So that the first switch disconnects, when UFP equipment is connected to the Type-C interfaces, the detection of the first detection module is defeated The level of outlet changes to trigger the external interrupt of the interface control module.
- 3. the connection detection circuit of Type-C interfaces as claimed in claim 1, it is characterised in that the first detection module bag Include the second current source, second switch, the 3rd switch and second resistance；The input terminal of second current source and the first end of the second resistance are connected to power supply altogether, second current source it is defeated Outlet is connected with the input terminal of the second switch, the second end of the second resistance and the input terminal phase of the described 3rd switch Connection, the output terminal of the second switch and the output terminal of the described 3rd switch connect the detection to form the first detection module altogether Output terminal；When having detected whether that UFP equipment is connected with Type-C interfaces, the interface control module exports the first enable signal So that the second switch disconnects, the 3rd switch closure, when UFP equipment is connected to the Type-C interfaces, described the The level of the detection output of one detection module changes to trigger the external interrupt of the interface control module.
- 4. the connection detection circuit of Type-C interfaces as claimed in claim 1, it is characterised in that the second detection module bag Include the 4th switch, 3rd resistor and the 4th resistance；The input terminal and the first end of the 3rd resistor of 4th switch connect the detection to form second detection module altogether Output terminal, the output terminal of the 4th switch and the second end of the 3rd resistor are connected to the first end of the 4th resistance altogether, The second end of 4th resistance is connected with power supply；When having detected whether that DFP equipment is connected with Type-C interfaces, the interface control module exports the second enable signal So that the 4th switches off, and when DFP equipment is connected to the Type-C interfaces, the detection output of second detection module Level change to trigger the external interrupt of the interface control module.
- 5. the connection detection circuit of Type-C interfaces as claimed in claim 1, it is characterised in that the second detection module bag Include the 5th switch, the 6th switch, the 5th resistance and the 6th resistance；The input terminal of the input terminal and the described 6th switch of 5th switch connects the detection to form second detection module altogether Output terminal, the output terminal of the 5th switch are connected with the first end of the 5th resistance, the output terminal of the 6th switch It is connected with the first end of the 6th resistance, the second end and the second end of the 6th resistance of the 5th resistance are connected to altogether Power supply；When having detected whether that DFP equipment is connected with Type-C interfaces, the interface control module exports the second enable signal So that the 5th switches off, the 6th switch closure, and when DFP equipment is connected to the Type-C interfaces, the second detection mould The level of the detection output of block changes to trigger the external interrupt of the interface control module.
- 6. the connection detection circuit of Type-C interfaces as claimed in claim 2, it is characterised in that the resistance value of the first resistor Not less than 100K Ω.
- 7. the connection detection circuit of Type-C interfaces as claimed in claim 3, it is characterised in that the resistance value of the second resistance Not less than 100K Ω.
- 8. the connection detection circuit of Type-C interfaces as claimed in claim 4, it is characterised in that the resistance value of the 3rd resistor Not less than 100K Ω.
- 9. the connection detection circuit of Type-C interfaces as claimed in claim 5, it is characterised in that the resistance value of the 6th resistance Not less than 100K Ω.
- 10. a kind of Type-C interfaces, it is characterised in that the Type-C interfaces include claim 1 to 9 any one of them The connection detection circuit of Type-C interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720597502.6U CN207281214U (en) | 2017-05-25 | 2017-05-25 | A kind of Type-C interfaces and its connection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720597502.6U CN207281214U (en) | 2017-05-25 | 2017-05-25 | A kind of Type-C interfaces and its connection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207281214U true CN207281214U (en) | 2018-04-27 |
Family
ID=61992478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720597502.6U Active CN207281214U (en) | 2017-05-25 | 2017-05-25 | A kind of Type-C interfaces and its connection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207281214U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763030A (en) * | 2018-07-26 | 2018-11-06 | 珠海市微半导体有限公司 | A kind of detection circuit and detection method of Type-C interfaces |
| CN109298985A (en) * | 2018-11-01 | 2019-02-01 | 上海艾为电子技术股份有限公司 | A kind of connection detection circuit |
| CN113030794A (en) * | 2021-03-02 | 2021-06-25 | Oppo广东移动通信有限公司 | Device detection method and device, computer readable medium and electronic device |
| CN114924639A (en) * | 2022-05-12 | 2022-08-19 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
-
2017
- 2017-05-25 CN CN201720597502.6U patent/CN207281214U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763030A (en) * | 2018-07-26 | 2018-11-06 | 珠海市微半导体有限公司 | A kind of detection circuit and detection method of Type-C interfaces |
| CN109298985A (en) * | 2018-11-01 | 2019-02-01 | 上海艾为电子技术股份有限公司 | A kind of connection detection circuit |
| CN113030794A (en) * | 2021-03-02 | 2021-06-25 | Oppo广东移动通信有限公司 | Device detection method and device, computer readable medium and electronic device |
| CN114924639A (en) * | 2022-05-12 | 2022-08-19 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
| CN114924639B (en) * | 2022-05-12 | 2024-05-28 | 芯海科技（深圳）股份有限公司 | Electronic device and method for waking up micro control unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207281214U (en) | A kind of Type-C interfaces and its connection detection circuit | |
| CN104767260B (en) | Charger, terminal unit and charging system | |
| CN208001164U (en) | Charging unit and charging system | |
| CN205787042U (en) | Battery power detection circuit and battery electric quantity detecting system | |
| CN107977606A (en) | The embedded fingerprint identification device and method of a kind of super-low standby power consumption | |
| CN203759164U (en) | Circuit for detecting access state of USB load equipment | |
| CN101179199A (en) | Terminal and charging method thereof | |
| CN107317686B (en) | Power supply equipment PSE | |
| CN105490361A (en) | Intelligent charger with universal serial bus (USB) interface | |
| CN105172612A (en) | Device for detecting connecting state of charging equipment and electric automobile | |
| CN207410011U (en) | A kind of control circuit and charging wire | |
| CN205945008U (en) | Circuit overcurrent protect device | |
| WO2024007835A1 (en) | Power source turn-on/turn-off control circuit and system for reset switch | |
| CN206441115U (en) | Starting key circuit and electronic equipment | |
| CN201788261U (en) | Switching value detection circuit | |
| CN209170009U (en) | Power circuit and electronic equipment | |
| CN106972459A (en) | current-limiting protection device | |
| CN207124472U (en) | A kind of charging port detecting system | |
| CN206178103U (en) | Energy storage system contactor adhesion detection device | |
| CN103108081A (en) | Subscriber identity module (SIM) card detection control device of mobile terminal | |
| CN207265995U (en) | It is a kind of to use the key switch electromechanics road with ena-bung function linear voltage regulator | |
| CN206834719U (en) | current-limiting protection device | |
| CN206726209U (en) | Peripheral hardware insertion detection circuit and terminal device | |
| CN206401436U (en) | Battery temperature controls circuit and electronic equipment | |
| CN109581227A (en) | A kind of intelligent door lock energy-saving voltage detection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |