CN220137677U - Communication circuit with awakening function and electronic equipment - Google Patents
Communication circuit with awakening function and electronic equipment Download PDFInfo
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- CN220137677U CN220137677U CN202321174688.6U CN202321174688U CN220137677U CN 220137677 U CN220137677 U CN 220137677U CN 202321174688 U CN202321174688 U CN 202321174688U CN 220137677 U CN220137677 U CN 220137677U
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- 230000004048 modification Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a communication circuit with a wake-up function and an electronic device, the communication circuit includes: a first control module provided with a transmitting port, the transmitting port is used for transmitting a level signal when the first control module is powered on; the connection module comprises a first connector and a second connector which are connected with each other, wherein a first port of the first connector is connected with the sending port of the first control module and is used for receiving the level signal sent by the sending port of the first control module and forwarding the level signal to the second connector. According to the utility model, the first control module and the second control module perform data interaction through the connection module, and the level change of the sending port on the first control module is used as an external interrupt wake-up signal to wake up the second control module. The scheme is simple and convenient to realize, low in cost and free from separate interrupt wake-up circuit.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to a communication circuit with a wake-up function and an electronic device.
Background
At present, external interrupt of a singlechip is generally realized by an independent circuit, and after the external interrupt wake-up circuit is added, the whole electronic board has cost increase. For example, chinese patent publication No. CN215705794U discloses a wake-up circuit for charging interface, comprising: the BMS power management system circuit comprises a wake-up source circuit, a power module and an MCU control chip, wherein one output end of the wake-up source circuit is connected with the input end of the power module, and the output end of the power module is connected with the input end of the MCU main control chip; and the other output end of the wake-up source circuit is connected with the input end of the charge interface circuit, and the scheme has a wake-up function. But the wake-up circuit employed increases the cost of use.
Disclosure of Invention
Aiming at the technical problems, an object of the embodiments of the present utility model is to provide a communication circuit and an electronic device with a wake-up function, which are used for solving the problem of high use cost caused by adding an additional wake-up circuit.
An object of an embodiment of the present utility model is to provide a communication circuit with a wake-up function, the communication circuit including:
the first control module is provided with a transmitting port, and the transmitting port is used for transmitting a level signal when the first control module is electrified;
the connection module comprises a first connector and a second connector which are connected with each other, wherein a first port of the first connector is connected with the sending port of the first control module and is used for receiving the level signal sent by the sending port of the first control module and forwarding the level signal to the second connector;
the second control module is provided with a receiving port and a wake-up port, the receiving port of the second control module is connected with the second port of the second connector, and the wake-up port is connected with the second port of the second connector and is used for receiving the level signal so as to wake-up the second control module from a sleep state to a working state;
and the power supply module is connected with the second control module and is used for supplying power to the second control module. The first control module and the second control module exchange data through the connection module, and the connection module utilizes the level change of the sending port on the first control module to wake up the second control module when transmitting data.
As an alternative embodiment, the first port and the second port of the first connector are respectively connected with the first port and the second port of the second connector.
As an alternative embodiment, the transmitting port of the first control module is connected to the first port of the first connector through a first resistor, and the receiving port of the first control module is connected to the first port of the first connector through a second resistor;
the receiving port of the second control module is connected with the second port of the second connector through a third resistor, the transmitting port of the second control module is connected with the first port of the second connector through a fourth resistor, and the wake-up port of the second control module is connected with the second port of the second connector through a fifth resistor.
As an alternative embodiment, the first connector and the second connector further comprise a power port and a ground port, respectively.
As an alternative embodiment, the power module includes a first power group and a second power group, which are both connected to the second control module, and are respectively used for supplying power to the second control module in the working state and the sleep state.
As an alternative embodiment, the first power supply group includes a first power supply terminal, and an electrolytic capacitor and a first capacitor connected in parallel are disposed between the first power supply terminal and the ground terminal.
As an optional embodiment, the second power supply unit includes a second power supply end, one end of the second power supply end is sequentially connected with the first diode, the sixth resistor and the seventh resistor, one end of the seventh resistor is connected with the second diode and the faraday capacitor respectively, the other end of the faraday capacitor is connected with the ground end, the other end of the second diode is connected with the third diode, the second capacitor and the first control module respectively, the other end of the third diode is connected with the third power supply end, and the other end of the second capacitor is connected with the ground end.
As an alternative embodiment, further comprising:
and the crystal oscillator module is connected with the second control module and is used for calculating the system time of the second power supply group to the first control module in the sleep state.
As an optional embodiment, the crystal oscillator module includes a crystal oscillator, one end of the crystal oscillator is connected to the second control module and the third capacitor, the other end of the crystal oscillator is connected to the second control module and the fourth capacitor, and the other ends of the third capacitor and the fourth capacitor are connected to the ground terminal.
The embodiment of the utility model also aims at providing electronic equipment comprising the communication circuit. The electronic equipment does not need to additionally arrange a wake-up circuit, uses the signal on the communication circuit as a wake-up signal, and has simple structure and low use cost.
The embodiment of the utility model has the beneficial effects that:
according to the utility model, the first control module and the second control module perform data interaction through the connection module, and the level change of the sending port on the first control module is used as an external interrupt wake-up signal to wake up the second control module. The scheme is simple and convenient to realize, low in cost and free from separate interrupt wake-up circuit. And the second control module enters a sleep state when the electronic equipment is in non-functional operation so as to reduce the power consumption of the second control module and prolong the power supply time of the power supply module after the second control module is powered down.
Drawings
Fig. 1 is a circuit diagram of an embodiment of the present utility model.
Reference numerals:
10. a first control module; 20. a connection module; 30. a second control module; 40. a power module; 50. and a crystal oscillator module.
Detailed Description
Various aspects and features of the present utility model are described herein with reference to the accompanying drawings.
It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of the utility model will occur to persons of ordinary skill in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with a general description of the utility model given above, and the detailed description of the embodiments given below, serve to explain the principles of the utility model.
These and other characteristics of the utility model will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the utility model has been described with reference to some specific examples, those skilled in the art can certainly realize many other equivalent forms of the utility model.
The above and other aspects, features and advantages of the present utility model will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the utility model, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the utility model in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present utility model in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the utility model.
Regardless of the state of the electronic device, the second control module 30 transitions between the active and sleep states. Because the second control module 30 is in an indirect working state, when the second control module 30 sends data to the electronic device through serial communication, the second control module 30 must be awakened first to ensure that the second control module 30 is in a working state, and then the data can be sent to the electronic device, otherwise, the situation of data loss occurs.
It is therefore an object of an embodiment of the present utility model to provide a communication circuit with a wake-up function, as shown in fig. 1, which comprises a first control module 10, a connection module 20, a second control module 30 and a power module 40.
The first control module 10 is a power panel with a model BF7615 chip, and is used for load power supply, load control, logic control and the like. The first control module 10 is provided with a transmitting port, and the transmitting port is used for transmitting a level signal when the first control module 10 is powered on.
The connection module 20 includes a first connector and a second connector connected to each other, a first port of the first connector is connected to the transmission port of the first control module 10, for receiving the level signal transmitted by the transmission port of the first control module 10 and forwarding the level signal to the second connector.
The second control module 30 is a control board adopting a model SH79F166 chip, and the control board has the functions of display, key press, time after power failure and the like. The second control module 30 is provided with a receiving port and a wake-up port, the receiving port of the second control module 30 is connected with the second port of the second connector, and the wake-up port is connected with the second port of the second connector and is used for receiving the level signal so as to wake-up the second control module 30 from a sleep state to a working state.
A power module 40, which is connected to the second control module 30, for powering said second control module 30. Data is exchanged between the first control module 10 and the second control module 30 through the connection module 20, and the connection module 20 uses the level change of the transmitting port on the first control module 10 to wake up the second control module 30 when transmitting the data.
Serial communication is adopted between the power panel and the control panel to exchange data, and meanwhile, the level signal received by the second control module 30 is used as an external interrupt wake-up signal. Specifically, the transmitting port of the first control module 10 is connected to the receiving port of the second control module 30 through the connection module 20, and the receiving port of the second control module 30 is connected to the wake-up port of the second control module 30 (i.e. the INT pin of pin 6 of the second control module 30). When the second control module 30 is in the sleep state, the receiving port of the second control module wakes up to enter the working state when the level of the receiving port changes.
When in use, after the external power supply is powered down, the first control module 10 is not powered, the second control module 30 is powered by the faraday capacitor (i.e. the second power supply group), the second control module 30 enters a sleep mode, and the second control module 30 only has a system time function in the sleep mode.
When the whole machine is powered on again, the first control module 10 works normally, the transmitting port on the first control module 10 has level change, the level change is transmitted to the wake-up port of the second control module 30 through the connection module 20, the second control module 30 wakes up after receiving the level change of the wake-up port, and the second control module 30 switches to normal VCC power supply (i.e. power supplied by the first power supply group), thereby entering a normal working mode. No separate external interrupt wakeup circuit need be designed, therefore, the power-on awakening function is realized, and the product cost is reduced.
As an alternative embodiment, the first port and the second port of the first connector are respectively connected with the first port and the second port of the second connector. The first connector and the second connector further include a power port and a ground port, respectively.
As an alternative embodiment, the transmitting port of the first control module 10 is connected to the first port of the first connector through a first resistor, and the receiving port of the first control module 10 is connected to the first port of the first connector through a second resistor;
the receiving port of the second control module 30 is connected with the second port of the second connector through a third resistor, the transmitting port of the second control module 30 is connected with the first port of the second connector through a fourth resistor, and the wake-up port of the second control module 30 is connected with the second port of the second connector through a fifth resistor.
The pin 13 of the first control module 10 is a transmitting port, the pin 14 of the first control module is a receiving port, the pin 9 of the first control module is grounded, and the pin 10 of the first control module is connected with a power supply with the voltage of +5V; the pin 35 of the second control module 30 is a receiving port, the pin 36 thereof is a transmitting port, and the pin 6 thereof is a wake-up port.
As an alternative embodiment, the power module 40 includes a first power pack and a second power pack, both connected to the second control module 30, for supplying power to the second control module 30 in the operating state and the sleep state, respectively. After the whole machine is powered off, the second power supply unit supplies power to the second control module 30, the second control module 30 enters a sleep mode, and when the power is on again, the second control module 30 is awakened to enter a normal working mode after the level signal of the transmitting port on the first control module 10 is transmitted by the connecting module 20.
As an alternative embodiment, the first power supply group includes a first power supply terminal, and an electrolytic capacitor and a first capacitor connected in parallel are disposed between the first power supply terminal and the ground terminal. The voltage of the first power supply end is +5V.
As an alternative embodiment, the second power supply group includes a second power supply terminal, and the voltage of the first power supply terminal is +5v. The second power end one end is connected with the first diode, the sixth resistor and the seventh resistor in sequence, one end of the seventh resistor is connected with the second diode and the Farad capacitor respectively, the other end of the Farad capacitor is connected with the grounding end, the other end of the second diode is connected with the third diode, the second capacitor and the first control module 10 respectively, the other end of the third diode is connected with the third power end, and the voltage of the third power end is +5V. The other end of the second capacitor is connected with the grounding end.
As an alternative embodiment, the communication circuit further includes:
and the crystal oscillator module 50 is connected with the second control module 30 and is used for calculating the system time of the second power supply group to the first control module 10 in the sleep state. The crystal oscillator module 50 is powered off in the whole machine the time error is satisfied after 168 hours.
As an alternative embodiment, the crystal oscillator module 50 includes a crystal oscillator, one end of the crystal oscillator is connected to the pin No. 9 of the second control module 30 and the third capacitor, the other end of the crystal oscillator is connected to the pin No. 8 of the second control module 30 and the fourth capacitor, the other ends of the third capacitor and the fourth capacitor are connected to the ground terminal, and the pin No. 7 of the second control module 30 is also connected to the ground terminal.
It is also an object of an embodiment of the utility model to provide an electronic device, including a communication circuit as described above. The electronic equipment does not need to additionally arrange a wake-up circuit, uses the signal on the communication circuit as a wake-up signal, and has simple structure and low use cost.
The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.
Claims (10)
1. A communication circuit having a wake-up function, comprising:
the first control module (10) is provided with a transmitting port, and the transmitting port is used for transmitting a level signal when the first control module (10) is powered on;
-a connection module (20) comprising a first connector and a second connector connected to each other, a first port of the first connector being connected to the transmission port of the first control module (10) for receiving the level signal transmitted by the transmission port of the first control module (10) and forwarding the level signal to the second connector;
the second control module (30) is provided with a receiving port and a wake-up port, the receiving port of the second control module (30) is connected with the second port of the second connector, and the wake-up port is connected with the second port of the second connector and is used for receiving the level signal so as to wake-up the second control module (30) from a sleep state to a working state;
and the power supply module (40) is connected with the second control module (30) and is used for supplying power to the second control module (30).
2. The communication circuit with wake-up function according to claim 1, wherein the first port and the second port of the first connector are connected to the first port and the second port of the second connector, respectively.
3. A communication circuit with wake-up function according to claim 2, characterized in that the transmitting port of the first control module (10) is connected with the second port of the first connector by a first resistor, and the receiving port of the first control module (10) is connected with the first port of the first connector by a second resistor;
the receiving port of the second control module (30) is connected with the second port of the second connector through a third resistor, the transmitting port of the second control module (30) is connected with the first port of the second connector through a fourth resistor, and the wake-up port of the second control module (30) is connected with the second port of the second connector through a fifth resistor.
4. A communication circuit with wake-up functionality according to claim 3, wherein the first connector and the second connector further comprise a power port and a ground port, respectively.
5. A communication circuit with wake-up function according to claim 1, characterized in that the power supply module (40) comprises a first power supply group and a second power supply group, both connected to the second control module (30), for powering the second control module (30) in an active state and in a sleep state, respectively.
6. The communication circuit with wake-up function of claim 5, wherein the first power pack comprises a first power terminal, and wherein an electrolytic capacitor and a first capacitor are connected in parallel between the first power terminal and a ground terminal.
7. The communication circuit with the wake-up function according to claim 5, wherein the second power supply group comprises a second power supply end, one end of the second power supply end is sequentially connected with the first diode, the sixth resistor and the seventh resistor, one end of the seventh resistor is respectively connected with the second diode and the faraday capacitor, the other end of the faraday capacitor is connected with the grounding end, the other end of the second diode is respectively connected with a third diode, the second capacitor and the first control module (10), the other end of the third diode is connected with the third power supply end, and the other end of the second capacitor is connected with the grounding end.
8. The communication circuit with wake-up function of claim 6, further comprising:
a crystal oscillator module connected with the second control module (30), for calculating the power supply time of the second power supply group to the first control module (10) in sleep state.
9. The communication circuit with the wake-up function according to claim 8, wherein the crystal oscillator module comprises a crystal oscillator, one end of the crystal oscillator is respectively connected with the second control module (30) and a third capacitor, the other end of the crystal oscillator is respectively connected with the second control module (30) and a fourth capacitor, and the other ends of the third capacitor and the fourth capacitor are respectively connected with a ground terminal.
10. An electronic device comprising a communication circuit as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321174688.6U CN220137677U (en) | 2023-05-15 | 2023-05-15 | Communication circuit with awakening function and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321174688.6U CN220137677U (en) | 2023-05-15 | 2023-05-15 | Communication circuit with awakening function and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220137677U true CN220137677U (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321174688.6U Active CN220137677U (en) | 2023-05-15 | 2023-05-15 | Communication circuit with awakening function and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN220137677U (en) |
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2023
- 2023-05-15 CN CN202321174688.6U patent/CN220137677U/en active Active
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