CN213754479U - Combination key reset circuit of handheld device and device thereof - Google Patents
Combination key reset circuit of handheld device and device thereof Download PDFInfo
- Publication number
- CN213754479U CN213754479U CN202022375158.0U CN202022375158U CN213754479U CN 213754479 U CN213754479 U CN 213754479U CN 202022375158 U CN202022375158 U CN 202022375158U CN 213754479 U CN213754479 U CN 213754479U
- Authority
- CN
- China
- Prior art keywords
- key
- triode
- power key
- circuit
- reset circuit
- 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
Images
Abstract
The utility model discloses a combination key reset circuit of handheld device and device thereof, including button and triode in this circuit, the button includes power key and at least one non-power key, the power key is connected with the collecting electrode electrical connection of triode, non-power key-type connection is at the base of triode, and the projecting pole ground connection of triode is connected with the circuit of drawing forth that is used for triggering chip and resets between the collecting electrode of power key and triode. A combination key reset device having a combination key reset circuit as claimed in claim 1 disposed therein. The utility model discloses having designed combination formula on the basis of current button and having triggered reset circuit and button, can having avoided trompil structure's complexity and potential hidden danger, providing friendly interactive mode more, comparing traditional contact pin and reseing and need not to look for the needle under emergency and reseed, only need press two or more buttons simultaneously can the system reset.
Description
Technical Field
The utility model relates to a circuit and device thereof especially relate to a combination key reset circuit of handheld device and device thereof.
Background
Along with the popularization of portable equipment, systems are more and more intelligent, and are basically linux and above systems, but as the complexity of the overall system architecture of the equipment increases, the risk of system crash also increases, and once a battery equipment crashes, the system is difficult to be quickly powered off, restarted and recovered due to the existence of the battery. Many equipment often have only a pinhole among the prior art, need carry out hardware reset with the contact pin, and the operation is more complicated, is unfavorable for quick recovery system, and this problem is needed to be improved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a combination key reset circuit of handheld device and device thereof solves the shortcoming regret that prior art exists.
The utility model discloses a following technical scheme realizes:
the utility model provides a combination key reset circuit of handheld device, includes button and triode in this circuit, its characterized in that, the button includes power key and at least one non-power key, power key and the collecting electrode electrical connection of triode, non-power key-type connection is at the base of triode, and the projecting pole ground connection of triode is connected with the circuit of drawing forth that is used for triggering the chip and resets between the collecting electrode of power key and triode.
Further, a first resistor is connected in series between the non-power key and the base of the triode.
Further, a second resistor is connected in series between the power key and the collector of the triode.
Further, a capacitor is connected between the first resistor and the emitter of the triode in a crossing mode.
The combination key resetting device of the handheld device is characterized in that a combination key resetting circuit is arranged in the combination key resetting device.
The utility model discloses having designed combination formula on the basis of current button and having triggered reset circuit and button, can having avoided trompil structure's complexity and potential hidden danger, providing friendly interactive mode more, comparing traditional contact pin and reseing and need not to look for the needle under emergency and reseed, only need press two or more buttons simultaneously can the system reset.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.
The combined KEY RESET circuit of the handheld device as shown in fig. 1 comprises a KEY and a triode, wherein the KEY comprises a power KEY P _ KEY and at least one non-power KEY0, the power KEY P _ KEY is electrically connected with the collector of a triode Q1, the non-power KEY0 is connected with the base of the triode Q1, the emitter of the triode Q1 is grounded, a lead-out line PM _ RESET for triggering chip RESET is connected between the power KEY P _ KEY and the collector of the triode Q1, a first resistor R1 is connected in series between a non-power KEY0 and the base of the triode Q1, a second resistor R2 is connected in series between the power KEY P _ KEY and the collector of the triode Q1, and a capacitor C1 is connected between the first resistor R1 and the emitter of the triode Q1 in a crossing manner. The combination key reset device is provided with a combination key reset circuit. The working principle of the embodiment is as follows: the POWER key (POWER key) of the portable device is generally a separately arranged key, and the other keys (such as the volume key) are another key, which means that the key of one portable device can be divided into two modes, namely, a POWER key and a non-POWER key. In this embodiment, the default state of the circuit connected to the power KEY P _ KEY is low, the circuit is changed to 3.3V high after the power KEY P _ KEY is pressed, the default state of the circuit connected to the non-power KEY0 is high 3.3V, and the circuit connected to the non-power KEY0 is changed to low after the non-power KEY is pressed. Under normal conditions, the triode Q1 is in a conducting state, the power KEY P _ KEY is off, the outgoing line PM _ RESET interconnected with the chip RESET pin is at a low level, and the chip and the portable device operate normally. When the power KEY P _ KEY and the non-power KEY0 are pressed simultaneously, the transistor Q1 is in a cut-off state, the lead-out line PM _ RESET changes to a high level, and a RESET pin of the chip is triggered to RESET the system. The embodiment designs the combined trigger reset circuit and the keys thereof on the basis of the existing keys, can avoid complexity and potential hidden dangers of a perforated structure, provides a more friendly interaction mode, is compared with the traditional contact pin reset, does not need to find a needle-shaped object to reset under emergency, and can reset the system only by pressing two or more keys simultaneously. On the basis of the reset circuit provided by this embodiment, any portable device with a built-in chip can implement a function of triggering system reset by using a combination key mode of a power key + a non-power key, that is, the reset circuit provided by this embodiment can implement functions of resetting and restarting a system in any portable electronic product device.
Of course, the present invention can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (5)
1. The utility model provides a combination key reset circuit of handheld device, includes button and triode in this circuit, its characterized in that, the button includes power key and at least one non-power key, power key and the collecting electrode electrical connection of triode, non-power key-type connection is at the base of triode, and the projecting pole ground connection of triode is connected with the circuit of drawing forth that is used for triggering the chip and resets between the collecting electrode of power key and triode.
2. The combination key reset circuit of claim 1, wherein a first resistor is connected in series between the non-power key and the base of the transistor.
3. The combination key reset circuit of claim 1, wherein a second resistor is connected in series between the power key and the collector of the transistor.
4. A combination key reset circuit for a hand-held device according to claim 3 wherein a capacitor is connected across the first resistor and the emitter of the transistor.
5. A combination key reset device for a hand-held device, wherein the combination key reset device is provided with the combination key reset circuit of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022375158.0U CN213754479U (en) | 2020-10-22 | 2020-10-22 | Combination key reset circuit of handheld device and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022375158.0U CN213754479U (en) | 2020-10-22 | 2020-10-22 | Combination key reset circuit of handheld device and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213754479U true CN213754479U (en) | 2021-07-20 |
Family
ID=76852065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022375158.0U Active CN213754479U (en) | 2020-10-22 | 2020-10-22 | Combination key reset circuit of handheld device and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213754479U (en) |
-
2020
- 2020-10-22 CN CN202022375158.0U patent/CN213754479U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102981425B (en) | Startup and shutdown circuit | |
| CN212484119U (en) | Power switch control circuit and device | |
| CN204290914U (en) | Reset circuit and electronic equipment | |
| CN203734639U (en) | Electronic device and antistatic reset circuit thereof | |
| CN213754479U (en) | Combination key reset circuit of handheld device and device thereof | |
| CN102868387A (en) | Level jump reset IC (integrated circuit) design circuit | |
| CN210721354U (en) | Reset circuit and electronic device | |
| CN210137424U (en) | Earphone hardware reset system | |
| CN204947900U (en) | Power management circuit of electronic lock | |
| CN201796842U (en) | Main intelligent circuit breaker integrated with multiple protection functions | |
| CN216699971U (en) | Key reset circuit and electronic equipment | |
| CN209448720U (en) | A kind of electric appliance reset circuit and electrical equipment | |
| CN214751423U (en) | MCU disaster prevention circuit | |
| CN215420220U (en) | Low-power consumption wake-up circuit and electronic equipment | |
| CN211830739U (en) | Light touch key power supply circuit and electronic equipment | |
| CN204794936U (en) | Reset circuit and electronic equipment | |
| CN208971482U (en) | A kind of switching on and shutting down, hardware power-off reset circuit | |
| CN203573444U (en) | Remote control vibration device | |
| CN103164008A (en) | Complementary metal oxide semiconductor (CMOS) password eliminating circuit | |
| CN209132717U (en) | A kind of intelligence system frequently powers off boot-strap circuit optimization device | |
| CN203617980U (en) | Control chip reset circuit and electronic device | |
| CN106788361B (en) | MCU long-press reset circuit | |
| CN216388011U (en) | Reset circuit and terminal equipment powered by built-in battery | |
| CN210839522U (en) | Clear CMOS trigger circuit, mainboard and computer | |
| CN218416349U (en) | Touch display switch circuit and touch display screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |