CN218568196U - Wireless remote control coding chip and application circuit thereof - Google Patents

Abstract

The utility model discloses a wireless remote control coding chip and application circuit thereof, include: a substrate and an internal circuit disposed within the substrate; the internal circuit includes: the device comprises a reset unit, a selection unit, an oscillation unit, a composite key unit, a coding unit and a coding output and detection unit; the reset unit is used for providing a reset signal; the selection unit is used for controlling the power-on mode of the oscillation unit; the oscillating unit is used for directly electrifying and starting or starting the composite key unit to output a clock signal to the coding unit; the composite key unit is used for starting the oscillation unit when a key is pressed down; the encoding unit is used for receiving the clock signal and outputting an encoding signal to the encoding output and detection unit; the code output and detection unit is used for outputting a code signal. The utility model discloses a last electric mode of selection unit control oscillation unit reaches the effect that both can be suitable for 3 pin encapsulation and also can be suitable for 5 pin encapsulation.

Description

Wireless remote control coding chip and application circuit thereof

Technical Field

The utility model relates to a chip design technical field, in particular to wireless remote control coding chip and application circuit thereof.

Background

With the development of electronic industry technology, remote control products are more and more widely applied in daily life of people, the existing remote control forms are also various, and the application fields are very wide. The remote control device has a larger application in toy remote control, household appliance remote control and the like.

The wireless remote control coding chip of the remote control toy has two packaging modes of 3 pins and 5 pins, the existing wireless remote control coding chip cannot be simultaneously suitable for packaging the 3 pins and the 5 pins, and the utilization rate of the chip is not high.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a wireless remote control coding chip and an application circuit thereof are provided to solve the problems that the existing wireless remote control coding chip can not be simultaneously suitable for packaging of 3 pins and 5 pins and the utilization rate of the chip is not high.

The utility model discloses a following technical scheme realizes: a wireless remote control encoding chip, comprising: a substrate and an internal circuit disposed within the substrate;

the internal circuit includes: the device comprises a reset unit, a selection unit, an oscillation unit, a composite key unit, a coding unit and a coding output and detection unit;

the reset unit is used for providing a reset signal for the wireless remote control coding chip;

the selection unit is respectively connected with the oscillation unit and the compound key unit and is used for controlling the power-on mode of the oscillation unit;

the oscillating unit is used for being directly powered on and started or the composite key unit is used for starting to output a clock signal to the coding unit;

the output end of the composite key unit is connected with the code output and detection unit through the oscillation unit and the coding unit in sequence, and the composite key unit is used for starting the oscillation unit when a key is pressed down;

the encoding unit is used for receiving a clock signal and outputting an encoding signal to the encoding output and detection unit;

the code output and detection unit is used for outputting a code signal to an external circuit.

The utility model discloses a further setting, code output and detection circuitry include: the device comprises a first field effect transistor, a second field effect transistor, a first resistor, a comprehensive processing unit, a port detection end, a power input end and a power output end;

a first grid electrode of the first field effect transistor is connected with a first output end of the comprehensive processing unit, a first source electrode of the first field effect transistor is connected with a power supply input end, and a first drain electrode of the first field effect transistor is connected with a first input end of the comprehensive processing unit and the port detection end;

a second grid electrode of the second field effect transistor is connected with a second output end of the comprehensive processing unit, a second source electrode of the second field effect transistor is grounded, and a second drain electrode of the second field effect transistor is connected with the power supply output end;

one end of the port detection end is connected with the power supply output end, and the other end of the port detection end is connected with the first input end;

one end of the first resistor is connected with the port detection end, and the other end of the first resistor is connected with the power output end.

In a further configuration of the present invention, the wireless remote control encoding chip is packaged by SOT23 or SOT 23-5.

In a further aspect of the invention, the encoded signal is a 1000Hz or 250Hz encoded signal. The utility model discloses a further setting still includes: the device comprises a power supply pin, a grounding pin, an output pin, a first key input pin and a second key input pin;

the power supply pin, the grounding pin, the output pin, the first key input pin and the second key input pin are respectively arranged on the substrate and are connected with the internal circuit;

and the oscillating unit is started by the composite key unit to output a clock signal to the coding unit.

The utility model discloses a further setting still includes: a power pin, a ground pin, and an output pin; the power supply pin, the grounding pin and the output pin are respectively arranged on the substrate and are connected with the internal circuit;

and the oscillating unit is directly electrified to start outputting a clock signal to the encoding unit.

The utility model discloses a further setting, still be provided with the signal indication pin on the base member, the signal indication pin with internal circuit connects.

An application circuit of a wireless remote control coding chip comprises: the encoding signal generating circuit is connected with the encoding signal transmitting circuit;

the code signal generating circuit comprises the wireless remote control code chip;

the wireless remote control coding chip is electrically connected with the coding signal transmitting circuit.

The utility model discloses a further setting, the coding signal produces the circuit and includes: the wireless remote control coding chip, the first switch, the second switch, the first diode, the second resistor, the third resistor, the first capacitor and the external power supply input end;

wherein, wireless remote control coding chip still includes: a power pin, a ground pin, and an output pin;

the power supply pin, the grounding pin and the output pin are respectively arranged on the substrate and are connected with the internal circuit;

the oscillating unit is directly electrified to start outputting a clock signal to the encoding unit;

the external power supply input by the external power supply input end is divided into two paths, one path is connected with the power supply pin through the first switch and the third resistor in sequence, and the other path is connected with the output pin through the second switch and the second resistor in sequence;

the anode of the first diode is respectively connected with the second resistor and the second switch, and the cathode of the first diode is respectively connected with the first switch and the third resistor;

one end of the first capacitor is connected with the power supply pin, and the other end of the first capacitor is connected with the grounding pin;

the ground pin is grounded.

The utility model discloses a further setting, the coding signal produces the circuit and includes: the wireless remote control coding chip, the first switch, the second switch, the first capacitor and the external power supply input end;

wherein, wireless remote control coding chip still includes: the device comprises a power supply pin, a grounding pin, an output pin, a first key input pin and a second key input pin;

the power supply pin, the grounding pin, the output pin, the first key input pin and the second key input pin are respectively arranged on the substrate and are connected with the internal circuit;

the oscillating unit is started by the composite key unit to output a clock signal to the coding unit;

the external power supply input end is connected with the power supply pin;

one end of the first switch is connected with the first key pin, and the other end of the first switch is grounded;

one end of the second switch is connected with the second key pin, and the other end of the second switch is grounded;

one end of the first capacitor is connected with the power supply pin, and the other end of the first capacitor is connected with the grounding pin.

The utility model has the advantages that:

the utility model discloses a wireless remote control coding chip includes: a base and an internal circuit of the base; the internal circuit includes: the device comprises a reset unit, a selection unit, an oscillation unit, a composite key unit, a coding unit and a coding output and detection unit; the selection unit is used for controlling the power-on mode of the oscillation unit; the oscillating unit is used for being directly powered on to start or starting the composite key unit to output a clock signal to the coding unit. The utility model discloses a selection unit control oscillation unit directly goes up the electricity and starts or by compound button unit start-up output clock signal, reaches the effect that both can be suitable for 3 pin encapsulation and also can be suitable for 5 pin encapsulation.

Drawings

Fig. 1 is a schematic block diagram of the wireless remote control encoding chip of the present invention.

Fig. 2 is a schematic circuit diagram of the code output and detection unit of fig. 1.

Fig. 3 is a schematic diagram of an external structure of a wireless remote control encoding chip according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram of an external structure of a wireless remote control encoding chip according to a second embodiment of the present invention.

Fig. 5 is a schematic diagram of an external structure of a wireless remote control encoding chip according to a third embodiment of the present invention.

Fig. 6 is a schematic circuit diagram of an application circuit of a wireless remote control encoding chip according to a first embodiment of the present invention.

Fig. 7 is a schematic circuit diagram of an application circuit of a wireless remote control encoding chip according to a second embodiment of the present invention.

FIG. 8 is a schematic diagram of encoded signals at 1000Hz and 250 Hz.

Description of the main elements

100. A wireless remote control coding chip; 200. an encoded signal generating circuit; 300. an encoded signal transmitting circuit; 10. a substrate; 11. a power supply pin; 12. a ground pin; 13. an output pin; 14. a first key pin; 15. a second key pin; 16. a signal indication pin; 20. an internal circuit; 21. a reset unit; 22. a selection unit; 23. an oscillation unit; 24. a composite key unit; 25. an encoding unit; 26. a code output and detection unit; 261. a comprehensive processing unit; 262. a port detection end; a1, a first input end; b1, a first output end; b2, a second output end; r1, a first resistor; r2 and a second resistor; r3, a third resistor; p1, a first field effect transistor; g1, a first grid; s1, a first source electrode; d1, a first drain electrode; n1, a second field effect transistor; g2, a second grid; s2, a second source electrode; d2, a second drain electrode; s1, a first switch; s2, a second switch; s3, controlling a switch by using a resistor; D. a first diode; c1, a first capacitor; VDD, power supply input; OUT, a power supply output end; GND and ground

Detailed Description

The utility model provides a wireless remote control coding chip and application circuit thereof is suitable for chip design technical field, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right to refer to the drawing below and to lift the example the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description and claims, the terms "a" and "an" can mean "one or more" unless the context specifically states otherwise.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Fig. 1 is a schematic block diagram of a wireless remote control encoding chip 100 according to the present invention, please refer to fig. 1, the wireless remote control encoding chip 100 includes a substrate 10 and an internal circuit 20 disposed in the substrate 10. The internal circuit 20 includes: a reset unit 21, a selection unit 22, an oscillation unit 23, a composite key unit 24, an encoding unit 25, and an encoding output and detection unit 26. The selection unit 22 is respectively connected to the oscillation unit 23 and the composite key unit 24, and the output end of the composite key unit 24 is sequentially connected to the code output and detection unit 26 through the oscillation unit 23 and the coding unit 25.

The reset unit 21 is configured to provide a reset signal for the wireless remote control encoding chip 100; the selection unit 22 is used for controlling the power-on mode of the oscillation unit 23; the oscillating unit 23 is used for directly powering on and starting or starting the composite key unit 24 to output a clock signal to the encoding unit 25; the composite key unit 24 is used for starting the oscillating unit 23 when a key is pressed; the encoding unit 25 is configured to receive a clock signal and output an encoded signal to the encoding output and detection unit 26; the code output and detection unit 26 is used for outputting a code signal to an external circuit. Wherein, the encoding unit 25 outputs the encoded signal to the encoding output and detection unit 26, and meanwhile, the encoding output and detection unit 26 also outputs the encoded output detection signal to the encoding unit 25; the code output and detection unit 26 realizes a function of driving an external circuit.

Wherein, the selection unit 22 is respectively connected with the oscillation unit 23 and the compound key unit 24. The oscillating unit 23 has two power-up modes. When the wireless remote control coding chip 100 is packaged in a 3-pin package, the selection unit 22 directly powers on the control oscillation unit 23 to start outputting a clock signal to the coding unit 25. When the wireless remote control coding chip is installed in a 5-pin package, and when a key is pressed down, the selection unit 22 controls the composite key unit 24 to start the oscillation unit 23 to output a clock signal to the coding unit 25. Through the control of the selection unit 22, the oscillation unit 23 may be directly powered on to start outputting the clock signal, or the oscillation unit 23 may also be started by the composite key unit 24 to output the clock signal, so that the chip may achieve the effect of being suitable for both 3-pin packaging and 5-pin packaging.

FIG. 8 is a schematic diagram of encoded signals at 1000Hz and 250 Hz. Referring to fig. 1 and 8, the encoded signal is a 1000Hz or 250Hz encoded signal.

Fig. 2 is a schematic circuit diagram of the encoding output and detection unit 26 of the wireless remote control encoding chip 100. Referring to fig. 2, the code output and detection unit 26 includes: the circuit comprises a first field effect transistor P1, a second field effect transistor N1, a first resistor R1, a comprehensive processing unit 261, a port detection end 262, a power input end VDD and a power output end OUT.

The first field effect tube P1 is a P-channel field effect tube, and the second field effect tube N1 is an N-channel field effect tube. A first gate g1 of the first field effect transistor P1 is connected to a first output terminal B1 of the integrated processing unit 261, a first source s1 of the first field effect transistor P1 is connected to the power input terminal VDD, and a first drain d1 of the first field effect transistor P1 is connected to the integrated processing unit input terminal A1 and the port detection terminal 262; the second gate g2 of the second field effect transistor N1 is connected to the second output terminal B2 of the comprehensive processing unit 261, the second source s2 of the second field effect transistor N1 is grounded GND, and the second drain d2 of the second field effect transistor N1 is connected to the power output terminal OUT. One end of the port detection terminal 262 is connected to the power output terminal OUT, and the other end of the port detection terminal 262 is connected to the first input terminal A1. One end of the first resistor R1 is connected to the port detection terminal 262, and the other end of the first resistor R1 is connected to the power output terminal OUT.

Referring to fig. 2 and 8, the code output and detection unit 26 further includes: and the resistance control switch S3 is used for controlling whether the first resistor R1 is connected into the circuit or not. When the wireless remote control coding chip 100 is packaged in a 3-pin package, the port detection end 262 functions to perform port detection, the resistance control switch S3 is closed, and the first resistor R1 is not enabled by short circuit; when the wireless remote control coding chip 100 is packaged by 5 pins, the port detection end 262 does not work, the resistor control switch S3 is turned off, the first resistor R1 is connected into a circuit, and the first resistor R1 is enabled.

Next, the structure of the wireless remote control encoding chip 100 will be described by using a specific embodiment.

Example one

Fig. 3 is a schematic diagram of an external structure of the wireless remote control encoding chip 100 according to the first embodiment of the present invention. Referring to fig. 1 to 3, the wireless remote control encoding chip 100 of the present embodiment is a pin package, and the wireless remote control encoding chip 100 further includes, in addition to the substrate 10: a power supply pin 11, a ground pin 12, an output pin 13, a first key pin 14, and a second key pin 15. The power supply pin 11, the ground pin 12, the output pin 13, the first key pin 14, and the second key pin 15 are respectively disposed on the base 10 and connected to the internal circuit 20. Wherein, the oscillation unit 23 starts to output the clock signal to the encoding unit 25 by the composite key unit 24. In this embodiment, when the first key pin 14 or the second key pin 15 receives a key signal, the selection unit 22 controls the composite key unit 24 to start the oscillation unit 23 to output a clock signal to the encoding unit 25. The composite key unit 24 is connected to the first key pin 14 and the second key pin 15, and the code output and detection unit 26 is connected to the output pin 13. The code output and detection unit 26 outputs a driving signal to an external circuit through the output pin 13 to drive the external circuit. In this embodiment, the port detection end 262 does not function; the resistance control switch S3 is switched off, the first resistor R1 is not short-circuited, and the first resistor R1 is switched into the circuit.

The package of the wireless remote control encoding chip 100 may be an SOT23 or SOT23-5 package, in this embodiment, the package of the SOT23 is not limited thereto.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 8 in combination. The working process of the wireless remote control coding chip 100 of the first embodiment is as follows: when the first key pin 14 or the second key pin 15 receives a key signal, the selection unit 22 controls the composite key unit 24 to start the oscillation unit 23, the oscillation unit 23 outputs a clock signal to the encoding unit 25, and the encoding unit 25 receives the clock signal and generates an encoding signal. The code outputting and detecting unit 26 outputs a code detecting signal to the encoding unit 25 according to the key state, and meanwhile, the encoding unit 25 outputs a code signal to the code outputting and detecting unit 26. The code output and detection unit 26 receives the code signal and outputs the code signal to the external circuit through the output pin 13. When the first key pin 14 receives a key signal, the code output and detection unit 26 outputs a 1000Hz code signal; when the second key pin 15 receives a key signal, the code output and detection unit 26 outputs a 250Hz code signal.

Fig. 6 is a schematic circuit diagram of an application circuit of the wireless remote control encoding chip 100 according to the first embodiment of the present invention. Referring to fig. 6, the application circuit of the wireless remote control encoding chip 100 includes an encoding signal generating circuit 200 and an encoding signal transmitting circuit 300; the wireless remote control coding chip 100 is electrically connected with the coding signal transmitting circuit 200, and the coding signal generating circuit 200 is connected with the coding signal transmitting circuit 300 through a coding signal output end. Because the application circuit of the present application is mainly improved by the code signal generating circuit 200, and the technology of the code signal transmitting circuit 300 has been described in detail in the prior art, wherein the code signal transmitting circuit 300 can be designed by the user, and is not described herein again.

Referring to fig. 6, in the present embodiment, the encoding signal generating circuit 200 includes: the wireless remote control encoding chip 100, the first switch S1, the second switch S2, the first capacitor C2, and an external power input terminal (represented by a power terminal in fig. 6).

Please refer to fig. 3 and fig. 6 in combination. The external power supply input end is connected with the power supply pin 11; one end of the first switch S1 is connected to the first key pin 14, and the other end of the first switch S1 is grounded to GND; one end of the second switch S2 is connected to the second key pin 15, and the other end of the second switch S2 is grounded to GND; one end of the first capacitor C1 is connected to the power pin 11, and the other end of the first capacitor C1 is connected to the ground pin 12; the ground pin 12 is grounded to GND, and the first capacitor C1 is grounded to GND through the ground pin 12.

Please refer to fig. 3, fig. 6 and fig. 8 in combination. The working process of the application circuit of the wireless remote control coding chip 100 of the first embodiment is as follows: when the first switch S1 and the second switch S2 are both turned off, the wireless remote control encoding chip 100 is in a power-off state, and the wireless remote control encoding chip 100 outputs a pull-down low level; when the first switch S1 is turned on and the second switch S2 is turned off, the wireless remote control encoding chip 100 outputs and outputs an encoding signal of 1000 Hz; when the first switch S1 is turned off and the second switch S2 is turned on, the wireless remote control encoding chip 100 outputs an encoding signal of 200 Hz.

The encoded signal generating circuit 200 of the present embodiment is compared with the prior art. The number of parts in a peripheral circuit is reduced, the circuit is simplified, the stability and consistency of frequency are improved, and the accuracy of code output is ensured, so that the quality of a product adopting the chip is ensured.

Example two

Fig. 4 is a schematic diagram of an external structure of the wireless remote control encoding chip 100 according to a second embodiment of the present invention. The utility model discloses the second embodiment provides wireless remote control code chip 100 is 3 pin encapsulation wireless remote control code chip 100. Referring to fig. 1, 2 and 4, the wireless remote control encoding chip 100 is a 3-pin package. The wireless remote control encoding chip 100 further includes, in addition to the base 10: power pin 11, ground pin 12, output pin 13. The power supply pin 11, the ground pin 12, and the output pin 13 are respectively provided on the base 10 and connected to the internal circuit 20. Wherein, the oscillating unit 23 directly outputs the clock signal to the encoding unit 25. The code output and detection unit 26 outputs a driving signal to an external circuit through the output pin 13 to drive the external circuit. In the present embodiment, the port detection terminal 262 functions to perform port detection and detect a pull-up resistor; and the resistance control switch S3 is closed, and the first resistor R1 is short-circuited and is not connected into the circuit.

The package of the wireless remote control encoding chip 100 may be an SOT23 or SOT23-5 package, in this embodiment, an SOT23-5 package, but is not limited thereto.

Please refer to fig. 1, fig. 2, fig. 4 and fig. 8 in combination. The working process of the wireless remote control coding chip 100 of the second embodiment is as follows:

the selection unit 22 controls the oscillation unit 23 to directly power on to output a clock signal to the encoding unit 25, and the encoding unit 25 receives the clock signal and generates an encoding signal. The port detection end 262 of the encoding output and detection unit 26 detects whether a pull-up resistor exists at a port, the encoding output and detection unit 26 outputs an encoding detection signal to the encoding unit 25 according to a detection result, and meanwhile, the encoding unit 25 outputs an encoding signal to the encoding output and detection unit 26. The code output and detection unit 26 receives the code signal and outputs the code signal to the external circuit through the output pin 13. When the port detection end 262 detects the pull-up resistor, the encoding output and detection unit 26 outputs an encoding signal of 250 Hz; when the port detection terminal 262 does not detect the pull-up resistor, the encoding output and detection unit 26 outputs an encoding signal of 1000 Hz.

Fig. 7 is a schematic circuit diagram of an application circuit of the wireless remote control encoding chip 100 according to the second embodiment of the present invention. Referring to fig. 7, the application circuit of the wireless remote control encoding chip 100 includes the encoding signal generating circuit 200 and the encoding signal transmitting circuit 300; the code signal generating circuit 200 is connected to the code signal transmitting circuit 300.

Referring to fig. 7 in conjunction with fig. 4, in the present embodiment, the encoding signal generating circuit 200 includes: the wireless remote control encoding chip 100, the first switch S1, the second switch S2, the first diode D, the second resistor R2, the third resistor R3, the first capacitor C1, and an external power input terminal (represented by a power terminal in fig. 7).

An external power supply input by an external power supply input end is divided into two paths, one path is connected with the power supply pin 11 through the first switch S1 and the third resistor R3 in sequence, and the other path is connected with the output pin 13 through the second switch S2 and the second resistor R2 in sequence; the anode of the first diode D is arranged between the second resistor R2 and the second switch S2, and the cathode of the first diode D is arranged between the first switch S1 and the third resistor R3; one end of the first capacitor C1 is connected to the power pin 11, and the other end of the first capacitor C1 is connected to the ground pin 12; the grounding pin 12 is grounded GND; the second resistor R2 is a pull-up resistor.

Please refer to fig. 4, fig. 7 and fig. 8 in combination. The working process of the application circuit of the wireless remote control coding chip 100 of this embodiment is as follows: when the first switch S1 and the second switch S2 are both turned off, the wireless remote control encoding chip 100 is in a power-off state, and the wireless remote control encoding chip 100 outputs a pull-down low level; when the first switch S1 is turned on and the second switch S2 is turned off, the second resistor R2 is suspended and not connected to the circuit, the port detection end 262 does not detect the pull-up resistor, and the wireless remote control encoding chip 100 outputs an encoding signal of 1000 Hz; when the first switch S1 is turned off and the second switch S2 is turned on, the second resistor R2 is connected to the circuit, and the wireless remote control encoding chip 100 outputs an encoding signal of 1000 Hz.

Example 3

Fig. 5 is a schematic diagram of an external structure of a wireless remote control encoding chip 100 according to a third embodiment of the present invention. Referring to fig. 1 and fig. 5, the wireless remote control encoding chip 100 of the present embodiment is substantially the same as the wireless remote control encoding chip 100 of the first embodiment, except that: a signal indication pin 16 is further disposed on the base body 10, and the signal indication pin 16 is connected to the internal circuit 20. The signal indication pin 16 is used for making a signal output indication, and when a key signal is input, the signal indication pin 16 outputs a high-level signal; when no key signal is input, the signal instructs the pin 16 to output a low level signal.

To sum up, the utility model provides a pair of wireless remote control coding chip and application circuit thereof has following beneficial effect:

controlling a power-on mode of the oscillating unit through the selecting unit; the oscillation unit is directly electrified to start or the composite key unit starts to output a clock signal to the coding unit, so that the effect of being suitable for 3-pin packaging and 5-pin packaging is achieved;

the utility model discloses a wireless remote control coding chip of 5 pin encapsulation compares the coded signal production circuit among the current chip application circuit. The number of parts in a peripheral circuit is reduced, the circuit is simplified, the stability and consistency of frequency are improved, and the accuracy of code output is ensured, so that the quality of a product adopting the chip is ensured.

Claims (10)

1. A wireless remote control encoding chip, comprising: the utility model provides a base and set up the internal circuit in the base, characterized in that, the internal circuit includes: the device comprises a reset unit, a selection unit, an oscillation unit, a composite key unit, a coding unit and a coding output and detection unit;

the reset unit is used for providing a reset signal for the wireless remote control coding chip;

the selection unit is respectively connected with the oscillation unit and the composite key unit and is used for controlling the power-on mode of the oscillation unit;

the oscillating unit is used for being directly powered on and started or the composite key unit is used for starting to output a clock signal to the coding unit;

the output end of the composite key unit is connected with the code output and detection unit through the oscillation unit and the coding unit in sequence, and the composite key unit is used for starting the oscillation unit when a key is pressed down;

the encoding unit is used for receiving a clock signal and outputting an encoding signal to the encoding output and detection unit;

the code output and detection unit is used for outputting a code signal to an external circuit.

2. The wireless remote control encoding chip of claim 1, wherein the encoding output and detection circuit comprises: the device comprises a first field effect transistor, a second field effect transistor, a first resistor, a comprehensive processing unit, a port detection end, a power supply input end and a power supply output end;

a first grid electrode of the first field effect transistor is connected with a first output end of the comprehensive processing unit, a first source electrode of the first field effect transistor is connected with a power supply input end, and a first drain electrode of the first field effect transistor is connected with a first input end of the comprehensive processing unit and the port detection end;

a second grid electrode of the second field effect transistor is connected with a second output end of the comprehensive processing unit, a second source electrode of the second field effect transistor is grounded, and a second drain electrode of the second field effect transistor is connected with the power supply output end;

one end of the port detection end is connected with the power supply output end, and the other end of the port detection end is connected with the first input end;

one end of the first resistor is connected with the port detection end, and the other end of the first resistor is connected with the power output end.

3. The wireless remote control coding chip of claim 1, wherein the package of the wireless remote control coding chip is an SOT23 package or an SOT23-5 package.

4. The wireless remote control coding chip of claim 1, wherein the coded signal is a 1000Hz or 250Hz coded signal.

5. The wireless remote control encoding chip of claim 1, further comprising: the device comprises a power supply pin, a grounding pin, an output pin, a first key input pin and a second key input pin;

the power supply pin, the grounding pin, the output pin, the first key input pin and the second key input pin are respectively arranged on the substrate and are connected with the internal circuit;

and the oscillating unit is started by the composite key unit to output a clock signal to the coding unit.

6. The wireless remote control encoding chip of claim 1, further comprising: a power pin, a ground pin, and an output pin; the power supply pin, the grounding pin and the output pin are respectively arranged on the substrate and are connected with the internal circuit;

and the oscillating unit is directly electrified to start outputting a clock signal to the encoding unit.

7. The wireless remote control coding chip of claim 5, wherein a signal indication pin is further disposed on the substrate, and the signal indication pin is connected to the internal circuit.

8. An application circuit of a wireless remote control coding chip is characterized by comprising: the encoding signal generating circuit is connected with the encoding signal transmitting circuit;

the code signal generating circuit comprises the wireless remote control code chip as claimed in any one of claims 1 to 4;

the wireless remote control coding chip is electrically connected with the coding signal transmitting circuit.

9. The circuit for applying a wireless remote control coding chip according to claim 8, wherein the coding signal generating circuit comprises: the wireless remote control coding chip, the first switch, the second switch, the first diode, the second resistor, the third resistor, the first capacitor and the external power supply input end;

wherein, wireless remote control coding chip still includes: a power pin, a ground pin, and an output pin;

the power supply pin, the grounding pin and the output pin are respectively arranged on the substrate and are connected with the internal circuit;

the oscillating unit is directly electrified to start outputting a clock signal to the encoding unit;

the external power supply input by the external power supply input end is divided into two paths, one path is connected with the power supply pin sequentially through the first switch and the third resistor, and the other path is connected with the output pin sequentially through the second switch and the second resistor;

the anode of the first diode is respectively connected with the second resistor and the second switch, and the cathode of the first diode is respectively connected with the first switch and the third resistor;

one end of the first capacitor is connected with the power supply pin, and the other end of the first capacitor is connected with the grounding pin;

the ground pin is grounded.

10. The circuit for applying a wireless remote control coding chip according to claim 8, wherein the coding signal generating circuit comprises: the wireless remote control coding chip, the first switch, the second switch, the first capacitor and the external power supply input end;

wherein, wireless remote control coding chip still includes: the device comprises a power supply pin, a grounding pin, an output pin, a first key input pin and a second key input pin;

the power supply pin, the grounding pin, the output pin, the first key input pin and the second key input pin are respectively arranged on the substrate and are connected with the internal circuit;

the oscillation unit is started by the composite key unit to output a clock signal to the coding unit;

the external power supply input end is connected with the power supply pin;

one end of the first switch is connected with the first key pin, and the other end of the first switch is grounded;

one end of the second switch is connected with the second key pin, and the other end of the second switch is grounded;

one end of the first capacitor is connected with the power supply pin, and the other end of the first capacitor is connected with the grounding pin.

Images