CN214315218U - Multi-channel hybrid wake-up controller - Google Patents
Multi-channel hybrid wake-up controller Download PDFInfo
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- CN214315218U CN214315218U CN202022770396.1U CN202022770396U CN214315218U CN 214315218 U CN214315218 U CN 214315218U CN 202022770396 U CN202022770396 U CN 202022770396U CN 214315218 U CN214315218 U CN 214315218U
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- 239000003990 capacitor Substances 0.000 claims description 36
- 230000002457 bidirectional effect Effects 0.000 claims description 8
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- 238000010586 diagram Methods 0.000 description 4
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Abstract
The utility model relates to a multichannel hybrid wake-up controller, include: the low-level trigger control circuit, the high-level trigger control circuit and the shared wake-up processing circuit; the input end of the low-level trigger control circuit is connected with an external low-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the low-level micro control unit; the input end of the high-level trigger control circuit is connected with an external high-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the high-level micro control unit; the wake-up pin of the shared wake-up processing circuit is connected with the wake-up pin of the micro control unit, and the shared wake-up processing circuit is used for judging whether the output of low level or high level is output to wake up the micro control unit after the micro control unit is woken up. Therefore, when any external module needs to wake up the micro control unit, the shared wake-up processing circuit can be used and share one wake-up pin.
Description
Technical Field
The utility model relates to a wake-up circuit's technical field, concretely relates to multichannel hybrid wake-up controller.
Background
At present, a plurality of low-power consumption singlechip pins in the wake-up circuit industry have a wake-up pin interrupt function, but the wake-up pin is only one, the use of a plurality of wake-up pins can not be satisfied, even the latest singlechip that has a plurality of pins and has low-power consumption to wake up, the wake-up pin quantity is also only a few, the price is high, a plurality of wake-up pin quantities can not be configured as required, to the intelligent door lock, need use fingerprint to wake up, touch wake-up, card swiping wake-up, pick-proof wake-up, button setting is awaken up etc., in order to solve this problem, just need design a multichannel mixed wake-up circuit and solve this problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multichannel mixes awakening controller to prior art's not enough. The purpose of the utility model can be realized by the technical scheme as follows.
The utility model provides a multichannel hybrid awakening controller, include: the low-level trigger control circuit, the high-level trigger control circuit and the shared wake-up processing circuit; wherein the content of the first and second substances,
the input end of the low-level trigger control circuit is connected with an external low-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the low-level micro control unit;
the input end of the high-level trigger control circuit is connected with an external high-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the high-level micro control unit;
the wake-up pin of the common wake-up processing circuit is connected with the wake-up pin of the micro control unit, and the common wake-up processing circuit is used for judging whether the output of low level or high level is output to wake up the micro control unit after the micro control unit is woken up.
Optionally, in the low-level trigger control circuit, an input end is connected to an input end of a low-level current-limiting resistor; the output end of the low-level current-limiting resistor is connected with the input end of a low-level capacitor and the low-level bidirectional TVS tube to the ground, the output end of the low-level capacitor is connected with a pull-up resistor, and the low-level capacitor and the pull-up resistor form an RC (resistor-capacitor) charging and discharging circuit; the output end of the low-level capacitor and the output end of the pull-up resistor are connected with the low-level triode, and the other two ends of the low-level triode are respectively grounded and connected with the shared awakening processing circuit.
Optionally, the low-level triode is a triode which is turned on when a low level is input to the input end of the low-level trigger control circuit, and is turned off when the charging voltage of the low-level capacitor reaches a preset voltage threshold.
Optionally, in the high-level trigger control circuit, an input end is connected to an input end of a high-level current-limiting resistor; the output end of the high-level current limiting resistor is connected with the input end of a high-level capacitor and the high-level bidirectional TVS tube to the ground, the output end of the high-level capacitor is connected with a pull-down resistor, and the high-level capacitor and the pull-down resistor form an RC (resistor-capacitor) charging and discharging circuit; the output end of the high-level capacitor and the input end of the pull-down resistor are connected with the high-level triode, and the other two ends of the high-level triode are respectively grounded and connected with the shared awakening processing circuit.
And the high-level triode is conducted when the high level is input to the input end of the high-level trigger control circuit, and is cut off when the charging voltage of the high-level capacitor reaches a preset voltage threshold value.
In the shared awakening processing circuit, the input end of a shared resistor is connected with the low-level trigger control circuit and the high-level trigger control circuit, the output end of the shared resistor is connected with an awakening pull-up resistor and an awakening triode, the awakening triode is respectively connected with the input ends of a high-level output resistor and an awakening current-limiting resistor, the output end of the high-level output resistor is grounded, and the output end of the awakening current-limiting resistor is connected with an awakening pin.
Optionally, the wake-up triode is a triode which is turned on when the low-level triode is turned on, the high-level output resistor outputs a high level, and the wake-up current-limiting resistor outputs a high-level wake-up signal to the wake-up pin.
Optionally, the waking up transistor is a transistor that is turned on when the high-level transistor is turned on, the high-level output resistor outputs a high level, and the waking up current-limiting resistor outputs a high-level waking signal to the waking up pin.
Optionally, an input end of the common resistor is connected to an emitter end of the low-level triode and a collector end of the high-level triode.
The utility model discloses a multichannel hybrid wake-up controller, include: the low-level trigger control circuit, the high-level trigger control circuit and the shared wake-up processing circuit; the input end of the low level trigger control circuit is connected with an external low level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the low-level micro control unit; the input end of the high-level trigger control circuit is connected with an external high-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the high-level micro control unit; the wake-up pin of the common wake-up processing circuit is connected with the wake-up pin of the micro control unit, and the common wake-up processing circuit is used for judging whether the output of low level or high level is output to wake up the micro control unit after the micro control unit wakes up. Therefore, when any one of the external low-level wake-up module and the external high-level wake-up module needs to wake up the micro control unit, the shared wake-up processing circuit can be used and share one wake-up pin, so that the problem that a plurality of external wake-up modules can only select one wake-up module to wake up the micro control unit is solved.
Drawings
For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-channel hybrid wake-up controller according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another multi-channel hybrid wake-up controller shown in fig. 1.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a multi-channel hybrid wake-up controller in an embodiment of the present invention, as shown in fig. 1, including: the low-level trigger control circuit, the high-level trigger control circuit and the shared wake-up processing circuit; the input end of the low-level trigger control circuit is connected with an external low-level wake-up module; one side of the output end is connected with the common awakening processing circuit, and the other side of the output end is used as a pin connecting end of a low-level Micro Control Unit (MCU); the input end of the high-level trigger control circuit is connected with an external high-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the high-level micro control unit; the wake-up pin of the common wake-up processing circuit is connected with the wake-up pin of the micro control unit, and the common wake-up processing circuit is used for judging whether the output of low level or high level is output to wake up the micro control unit after the micro control unit wakes up.
Fig. 2 is a schematic structural diagram of another multi-channel hybrid wake-up controller shown in fig. 1, and as shown in fig. 2, in the low-level trigger control circuit, an input terminal is connected to an input terminal of a low-level current-limiting resistor R2; the output end of the low-level current-limiting resistor R2 is connected with the input end of a low-level capacitor C1 and a low-level bidirectional TVS (Transient diode) tube to the ground, the output end of the low-level capacitor C1 is connected with a pull-up resistor R1, and the low-level capacitor C1 and the pull-up resistor R1 form an RC charge-discharge circuit; the output end of the low-level capacitor C1 and the output end of the pull-up resistor R1 are connected with a low-level triode, and the other two ends of the low-level triode are respectively grounded and connected with the shared awakening processing circuit. Namely INL is used as a low level wake-up pin output port, and the output OUTL is connected with the MCU pin.
The low-level triode Q1 is a triode that is turned on when a low level is input to the input terminal of the low-level trigger control circuit, and is turned off when the charging voltage of the low-level capacitor C1 reaches a preset voltage threshold.
For example, the output end of the low-level current-limiting resistor R2 is connected to the input end of the low-level capacitor C1 and the low-level bidirectional TVS transistor to the ground, so that ESD (Electro-Static discharge) can be prevented from damaging the semiconductor device.
Among them, TVS is a high performance protection device in the form of a diode. When two poles of the TVS diode are impacted by reverse transient high energy, the TVS diode can change the high impedance between the two poles into low impedance at the speed of 10 to the order of minus 12 seconds, absorb surge power of thousands of watts and clamp the voltage between the two poles at a preset value, thereby effectively protecting precise components in an electronic circuit from being damaged by various surge pulses.
In the high-level trigger control circuit, an input end is connected with an input end of a high-level current-limiting resistor R7; the output end of the high-level current-limiting resistor R7 is connected with the input end of a high-level capacitor C2 and a high-level bidirectional TVS tube to the ground, the output end of the high-level capacitor C2 is connected with a pull-down resistor R8, and the high-level capacitor C2 and the pull-down resistor R8 form an RC charge-discharge circuit; the output end of the high-level capacitor C2 and the input end of the pull-down resistor R8 are connected with a high-level triode Q3, and the other two ends of the high-level triode Q3 are respectively grounded and connected with the common wake-up processing circuit. Namely INH is used as an output port of a high-level wake-up pin, and output OUTH is connected with a pin of the MCU.
The high-level triode Q3 is a triode that is turned on when a high level is input to the input terminal of the high-level trigger control circuit, and is turned off when the charging voltage of the high-level capacitor C2 reaches a preset voltage threshold.
For example, the output end of the high-level current-limiting resistor R7 is connected to the input end of the high-level capacitor C2 and the high-level bidirectional TVS transistor to the ground, so that the semiconductor component can be prevented from being damaged by ESD.
In the common wake-up processing circuit, the input end of a common resistor R4 is connected with the low level trigger control circuit and the high level trigger control circuit, the output end is connected with a wake-up pull-up resistor R3 and a wake-up triode Q2, the wake-up triode Q2 is respectively connected with the input ends of a high level output resistor R6 and a wake-up current-limiting resistor R5, the output end of the high level output resistor R6 is grounded, and the output end of the wake-up current-limiting resistor R5 is connected with a wake-up pin (wake-up pin).
The wake-up transistor Q2 is a transistor that is turned on when the low-level transistor Q1 is turned on, the high-level output resistor R6 outputs a high level, and the wake-up current-limiting resistor R5 outputs a high-level wake-up signal to the wake-up pin. The wake-up transistor Q2 is a transistor that is turned on when the high-level transistor Q3 is turned on, the high-level output resistor R6 outputs a high level, and the wake-up current-limiting resistor R5 outputs a high-level wake-up signal to the wake-up pin. The input terminal of the common resistor R4 is connected to the emitter terminal of the low-level transistor Q1 and the collector terminal of the high-level transistor Q3.
Exemplarily, the final outputs of INL and INH share one wake up pin, and wake up is connected to the MCU wake up pin; when the MCU is awakened, the MCU is awakened by inquiring whether the MCU is OUTL or OUTH.
To sum up, the utility model discloses a technical scheme, one side and this sharing through triggering control circuit with low level and high level respectively and triggering control circuit output awaken circuit connection, the opposite side is regarded as the little the control unit pin link of low level and the little the control unit pin link of high level respectively, can awaken up in the module in module and the outside high level in outside low level and arbitrary one module need awaken up little the control unit time, all can use foretell sharing to awaken up processing circuit and sharing one and awaken up the pin, this sharing awakens up processing circuit for awakening up the back when little the control unit, judge that low level output or high level output awakens up little the control unit awaken up processing circuit. The INL is used as an output port of a low-level wake-up pin, the output OUTL is connected with an MCU pin, the INH is used as an output port of a high-level wake-up pin, the output OUTH is connected with the MCU pin, the INL and the INH are finally output to share a wake-up pin WAKEUP, and the WAKEUP is connected with the MCU wake-up pin; after the MCU is awakened, the MCU is awakened by inquiring and judging whether the MCU is OUTL or OUTH, so that the problem that a plurality of external awakening modules can only select one awakening module to awaken the micro control unit is solved.
The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.
Claims (9)
1. A multi-way hybrid wake-up controller, comprising: the low-level trigger control circuit, the high-level trigger control circuit and the shared wake-up processing circuit; wherein the content of the first and second substances,
the input end of the low-level trigger control circuit is connected with an external low-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the low-level micro control unit;
the input end of the high-level trigger control circuit is connected with an external high-level wake-up module; one side of the output end is connected with the shared awakening processing circuit, and the other side of the output end is used as a pin connecting end of the high-level micro control unit;
the wake-up pin of the common wake-up processing circuit is connected with the wake-up pin of the micro control unit, and the common wake-up processing circuit is used for judging whether the output of low level or high level is output to wake up the micro control unit after the micro control unit is woken up.
2. The multi-channel hybrid wake-up controller according to claim 1, wherein in the low-level trigger control circuit, an input terminal is connected to an input terminal of a low-level current-limiting resistor; the output end of the low-level current-limiting resistor is connected with the input end of a low-level capacitor and the low-level bidirectional TVS tube to the ground, the output end of the low-level capacitor is connected with a pull-up resistor, and the low-level capacitor and the pull-up resistor form an RC (resistor-capacitor) charging and discharging circuit; the output end of the low-level capacitor and the output end of the pull-up resistor are connected with the low-level triode, and the other two ends of the low-level triode are respectively grounded and connected with the shared awakening processing circuit.
3. The mux-wake-up controller according to claim 2, wherein the low-level transistor is turned on when a low level is input to the input terminal of the low-level trigger control circuit, and is turned off when a charging voltage of the low-level capacitor reaches a predetermined voltage threshold.
4. The multi-channel hybrid wake-up controller according to claim 1, wherein in the high-level trigger control circuit, an input terminal is connected to an input terminal of a high-level current-limiting resistor; the output end of the high-level current limiting resistor is connected with the input end of a high-level capacitor and the high-level bidirectional TVS tube to the ground, the output end of the high-level capacitor is connected with a pull-down resistor, and the high-level capacitor and the pull-down resistor form an RC (resistor-capacitor) charging and discharging circuit; the output end of the high-level capacitor and the input end of the pull-down resistor are connected with the high-level triode, and the other two ends of the high-level triode are respectively grounded and connected with the shared awakening processing circuit.
5. The mux-wakeup controller according to claim 4, wherein the high-level transistor is turned on when a high level is input to the input terminal of the high-level trigger control circuit, and is turned off when the charging voltage of the high-level capacitor reaches a predetermined voltage threshold.
6. The multi-channel hybrid wake-up controller according to claim 1, wherein in the shared wake-up processing circuit, an input terminal of a shared resistor is connected to the low-level trigger control circuit and the high-level trigger control circuit, and an output terminal thereof is connected to a wake-up pull-up resistor and a wake-up transistor, the wake-up transistor is respectively connected to input terminals of a high-level output resistor and a wake-up current-limiting resistor, an output terminal of the high-level output resistor is grounded, and an output terminal of the wake-up current-limiting resistor is connected to a wake-up pin.
7. The mux-wake-up controller of claim 6, wherein the wake-up transistor is a transistor that is turned on when the low level transistor is turned on, the high level output resistor outputs a high level, and the wake-up current-limiting resistor outputs a high level wake-up signal to the wake-up pin.
8. The mux-wake-up controller of claim 7, wherein the wake-up transistor is a transistor that is turned on when the high-level transistor is turned on, the high-level output resistor outputs a high level, and the wake-up current-limiting resistor outputs a high-level wake-up signal to the wake-up pin.
9. The multi-hybrid wake-up controller according to claim 6, wherein the input terminal of the common resistor is connected to the emitter terminal of the low-level transistor and the collector terminal of the high-level transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770396.1U CN214315218U (en) | 2020-11-24 | 2020-11-24 | Multi-channel hybrid wake-up controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022770396.1U CN214315218U (en) | 2020-11-24 | 2020-11-24 | Multi-channel hybrid wake-up controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214315218U true CN214315218U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022770396.1U Expired - Fee Related CN214315218U (en) | 2020-11-24 | 2020-11-24 | Multi-channel hybrid wake-up controller |
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| Country | Link |
|---|---|
| CN (1) | CN214315218U (en) |
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2020
- 2020-11-24 CN CN202022770396.1U patent/CN214315218U/en not_active Expired - Fee Related
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Granted publication date: 20210928 |