CN205644953U - Application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID - Google Patents
Application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID Download PDFInfo
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- CN205644953U CN205644953U CN201620457726.2U CN201620457726U CN205644953U CN 205644953 U CN205644953 U CN 205644953U CN 201620457726 U CN201620457726 U CN 201620457726U CN 205644953 U CN205644953 U CN 205644953U
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Abstract
The utility model discloses an application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID, it includes: main control chip SM108, this main control chip SM108's 1 foot be chip condition indication interface, 5 feet for infrared emission with study interface, 6 feet be power source, 7 feet be ground connection mouth, 8 feet be IIC data port for empty pin, 3 feet for programming high pressure input VPP, 4 feet as IIC clock interface, 2 feet, wherein, main control chip SM108's 1 foot connects in power VDD through pull -up resistance R1, and the current -limiting resistor R3, 5 foot that has connect of 4 feet has met infrared diode D1, and this infrared diode's input termination in power VDD, and 6 feet connect in power VDD, 7 foot ground connection, and 8 feet connect in power VDD through pull -up resistance R2. It is when possessing infrared remote control function, and the operational reliability is high, and has stronger job stabilization nature.
Description
Technical field
This utility model relates to a kind of based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108.
Background technology
There is the problem that peripheral circuit in application circuit is complex in traditional mobile phone, MID Universal study remote control circuit, it adds the component number of application circuit virtually, reduces reliability and stability.
Further, conventional mobile phone typically do not possess function of infrared remote control, the most only this function of the part such as Samsung, Semen setariae new architecture band.
Utility model content
The purpose of this utility model is to provide that a kind of it is while possessing function of infrared remote control based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108, and functional reliability is high, and has stronger job stability.
For solving above-mentioned technical problem, embodiment of the present utility model provides a kind of based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108, it is characterized in that, comprising: main control chip SM108,1 foot of this main control chip SM108 as IIC clock interface, 2 feet be empty pin, 3 feet be programming high input voltage VPP, 4 feet be chip status instruction interface, 5 feet be infrared emission and study interface, 6 feet be power interface, 7 feet be ground connection mouth, 8 feet be IIC data port；
Wherein, 1 foot of described main control chip SM108 is connected to power vd D by pull-up resistor R1,4 feet be connected to current-limiting resistance R3,5 feet are connected to infrared diode D1, and the input of this infrared diode is connected to power vd D, and 6 feet are connected to power vd D, 7 foot ground connection, 8 feet are connected to power vd D by pull-up resistor R2.
Further, described infrared diode D1 and main control chip 6 foot are connected to be connected on the circuit of power vd D the decoupling capacitance C1 of one end ground connection.
Further, described power vd D uses the 2.8V power supply on mobile phone board.
Further, the resistance of described pull-up resistor R1, R2 is identical, and value is 4.7K or 3K.
Further, the resistance of described current-limiting resistance is 0 or 10K-47K.
Further, it is in series with current-limiting resistance between 5 feet and the power vd D of described main control chip SM108.
This utility model have the advantages that its while possessing function of infrared remote control, functional reliability is high, and has stronger job stability.
Accompanying drawing explanation
Fig. 1 is based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108.
Fig. 2 is the theory diagram of main control chip SM108.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with specific embodiment, this utility model is expanded on further.
As shown in Figure 1, a kind of based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108, comprising: main control chip SM108,1 foot of this main control chip SM108 as IIC clock interface, 2 feet be empty pin, 3 feet be programming high input voltage VPP, 4 feet be chip status instruction interface, 5 feet be infrared emission and study interface, 6 feet be power interface, 7 feet be ground connection mouth, 8 feet be IIC data port, the pin illustrated in table 1 of this main control chip SM108.
Table 1
Wherein, 1 foot of described main control chip SM108 is connected to power vd D by pull-up resistor R1,4 feet be connected to current-limiting resistance R3,5 feet are connected to infrared diode D1, and the input of this infrared diode is connected to power vd D, and 6 feet are connected to power vd D, 7 foot ground connection, 8 feet are connected to power vd D by pull-up resistor R2.
Described infrared diode D1 and main control chip 6 foot are connected to be connected on the circuit of power vd D the decoupling capacitance C1 of one end ground connection.
Described power vd D uses the 2.8V power supply on mobile phone board.
Mobile phone master chip can be communicated with SM108 by IIC interface, can deliver to launch remote control circuit by infrared sight after SM108 encodes and modulates by IIC interface by the omnipotent data base (including TV, Set Top Box, DVS, air-conditioning, fan etc.) stored in mobile phone when launching, can also learn and reduce and launch the remote controller of the most all coded formats, the infrared reference carrier frequency that can learn can cover 0-85KHz, can support the study of the remote control equipments such as television set, Set Top Box, air-conditioning, electric fan, projector.
The manipulation of SM108 is completed by mobile phone by mobile phone A PP software.
Fig. 2 is the theory diagram of main control chip SM108, and it belongs to prior art, and not in this to go forth.
Function machine is applied
Application for function machine, owing to the GPIO mouth of function machine can be set to open-drain output or 2.8VCMOS output, and on mobile phone board, have 2.8V power supply, the VDD of SM108 directly connects 2.8V power supply and uses, the power supply of the pull-up resistor of SCK and SDA also meets 2.8V, it is 0 ohm that the current-limiting resistance of BUSY port can connect, and now, the resistance of pull-up resistor R1, R2 is 4.7K.
Intelligent machine is applied
For the application of intelligent machine, weak GPIO mouth can be set to open-drain output or 2.8VCMOS output, and has 2.8V power supply on mobile phone board, all of the port connection function of reference machine of SM108；
If GPIO mouth can not be arranged to open-drain output and can only export by 1.8VCMOS, then the vdd voltage scope of SM108 is 2.0V-2.5V, and the power supply of the pull-up resistor of SCK, SDA needs to receive 1.8V, BUSY port needs to connect the current-limiting resistance R3 of a 10K-47K, now, the resistance of pull-up resistor R1, R2 is 3K.
Transient current explanation
IR_LED it is directly connected between VDD and RMT, when launching, the maximum transient current of IR_LED is 250mA, therefore, the supply current ability of VDD should meet this requirement, if the supply current ability of user does not reaches this requirement, it is contemplated that the current-limiting resistance of 0-10 ohm of connecting again between VDD and RMT uses.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiment of the utility model, and in actual applications, can to it, various changes can be made in the form and details, without departing from spirit and scope of the present utility model.
Claims (6)
1. based on mobile phone, the application circuit of MID Universal study remote-controlled chip SM108, it is characterised in that its
Including: main control chip SM108,1 foot of this main control chip SM108 as IIC clock interface, 2 feet is
Empty pin, 3 feet are programming high input voltage VPP, 4 feet are chip status instruction interface, 5 feet are infrared emission
With study interface, 6 feet be power interface, 7 feet be ground connection mouth, 8 feet be IIC data port；
Wherein, 1 foot of described main control chip SM108 is connected to power vd D, 4 feet by pull-up resistor R1
Be connected to current-limiting resistance R3,5 feet are connected to infrared diode D1, and the input of this infrared diode is connected to electricity
Source VDD, 6 feet are connected to power vd D, 7 foot ground connection, and 8 feet are connected to power vd D by pull-up resistor R2.
The most according to claim 1 based on mobile phone, the application of MID Universal study remote-controlled chip SM108
Circuit, it is characterised in that described infrared diode D1 and main control chip 6 foot are connected to the line of power vd D
The decoupling capacitance C1 of one end ground connection it is connected on road.
The most according to claim 1 based on mobile phone, the application of MID Universal study remote-controlled chip SM108
Circuit, it is characterised in that described power vd D uses the 2.8V power supply on mobile phone board.
The most according to claim 1 based on mobile phone, the application of MID Universal study remote-controlled chip SM108
Circuit, it is characterised in that the resistance of described pull-up resistor R1, R2 is identical, value is 4.7K or 3K.
The most according to claim 1 based on mobile phone, the application of MID Universal study remote-controlled chip SM108
Circuit, it is characterised in that the resistance of described current-limiting resistance is 0 or 10K-47K.
The most according to claim 1 based on mobile phone, the application of MID Universal study remote-controlled chip SM108
Circuit, it is characterised in that be in series with current limliting between 5 feet and the power vd D of described main control chip SM108
Resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457726.2U CN205644953U (en) | 2016-05-18 | 2016-05-18 | Application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457726.2U CN205644953U (en) | 2016-05-18 | 2016-05-18 | Application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID |
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| CN205644953U true CN205644953U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620457726.2U Active CN205644953U (en) | 2016-05-18 | 2016-05-18 | Application circuit based on cell -phone, omnipotent study remote control chip SM108 of MID |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562307A (en) * | 2020-12-07 | 2021-03-26 | 深圳创维－Rgb电子有限公司 | IIC signal transmission system, IIC signal transmission method, and storage medium |
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2016
- 2016-05-18 CN CN201620457726.2U patent/CN205644953U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562307A (en) * | 2020-12-07 | 2021-03-26 | 深圳创维－Rgb电子有限公司 | IIC signal transmission system, IIC signal transmission method, and storage medium |
| CN112562307B (en) * | 2020-12-07 | 2022-04-12 | 深圳创维－Rgb电子有限公司 | IIC signal transmission system, IIC signal transmission method, and storage medium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201206 Shanghai City, Pudong New Area Chinese (Shanghai) Free Trade Zone Gold Road No. 58 room 1911 Patentee after: Shanghai sinomicon electronics Limited by Share Ltd Address before: 201206 Shanghai City, Pudong New Area Chinese (Shanghai) Free Trade Zone Gold Road No. 58 room 1911 Patentee before: SHANGHAI SINOMICON ELECTRONICS CO., LTD. |