CN208609237U - Display shares scan-type control circuit with detection - Google Patents
Display shares scan-type control circuit with detection Download PDFInfo
- Publication number
- CN208609237U CN208609237U CN201821020732.7U CN201821020732U CN208609237U CN 208609237 U CN208609237 U CN 208609237U CN 201821020732 U CN201821020732 U CN 201821020732U CN 208609237 U CN208609237 U CN 208609237U
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- resistance
- led light
- pin
- processing chip
- detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a kind of displays to share scan-type control circuit with detection, including handling chip, it further include first resistor, second resistance, 6th resistance, 7th resistance, 8th resistance, second LED light, third LED light, 4th LED light and touch-switch, the cathode of the 4th LED light is connected on the pin one of processing chip after 8th resistance is connected with the 4th LED light, first resistor is connected between the pin one and VCC of processing chip, the other end of 8th resistance and the cathode of third LED light are connected on the pin three of processing chip, the cathode of the second LED light is connected on the pin two of processing chip after 6th resistance is connected with the second LED light, the other end of second resistance is connected on the pin three of processing chip after second resistance is connected with touch-switch.The structure setting of the utility model is reasonable, and instruction is carried out foot position with detection and is shared, the packaging pin of matching treatment chip can be effectively reduced, reduces use cost, stability in use is good and practical.
Description
Technical field
The utility model belongs to control circuit technical field, and in particular to it is a kind of display with detect share scan-type control electricity
Road.
Background technique
When product is controlled and detected using single-chip microcontroller, often the quantity of foot position needs reasonable arrangement, is otherwise easy to appear
Superfluous situation, while will also result in the wasting of resources, if each detection is used alone with display, using 10 foot positions
When, the packaging pin for handling chip at least obtains 14, cost is considerably increased, so applicability and practicability are restricted.
Utility model content
The purpose of the utility model is to provide a kind of structure setting, reasonable and practical display and detection share scanning
Formula control circuit.
The technical solution for realizing the utility model aim is that a kind of show shares scan-type control circuit, including place with detection
Chip is managed, further includes first resistor, second resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second LED light, the 3rd LED
Lamp, the 4th LED light and touch-switch, the cathode of the 4th LED light is connected to processing after the 8th resistance is connected with the 4th LED light
On the pin one of chip, the other end of the 7th resistance is connected to processing chip after the 7th resistance is connected with third LED light
On pin two, the first resistor is connected between the pin one and VCC of processing chip, the other end of the 8th resistance and the
The cathode of three LED light is connected on the pin three of processing chip, the second LED light after the 6th resistance is connected with the second LED light
Cathode be connected to processing chip pin two on and the 6th resistance the other end be connected to processing chip pin three on, second
After resistance is connected with touch-switch the other end of second resistance be connected to processing chip pin three on and touch-switch it is another
End ground connection.
The utility model has the effect of positive: the structure setting of the utility model is reasonable, and instruction is carried out with detection
Foot position shares, and so as to effectively reduce the packaging pin of matching treatment chip, so as to reduce use cost, uses stabilization
Property it is good and practical.
Detailed description of the invention
In order to be more likely to be clearly understood the content of the utility model, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model, in which:
Fig. 1 is the electrical block diagram of the utility model.
Specific embodiment
(embodiment 1)
Fig. 1 shows a kind of specific embodiment of the utility model, and wherein Fig. 1 is that the circuit structure of the utility model shows
It is intended to.
See Fig. 1, it is a kind of to show and detect in shared scan-type control circuit, including processing chip IC the present embodiment, to place
Manage chip model it is not restricted, can meet demand, further include first resistor R1, second resistance R2, the 6th resistance R6,
7th resistance R7, the 8th resistance R8, the second LED light LED2, third LED light LED3, the 4th LED light LED4 and touch-switch SW1,
The cathode of the 4th LED light LED4 is connected to the pin of processing chip IC after the 8th resistance R8 connects with the 4th LED light LED4
On one L3, the other end of the 7th resistance R7 is connected to processing chip IC after the 7th resistance R7 connects with third LED light LED3
Two L1 of pin on, the first resistor R1 be connected to processing chip IC pin one L3 and VCC between, the 8th resistance R8
The other end and the cathode of third LED light LED3 be connected on three L2 of pin of processing chip IC, the 6th resistance R6 and the
Two LED light LED2 series connection after the second LED light LED2 cathode be connected to processing chip IC two L1 of pin on and the 6th resistance R6
The other end be connected to processing chip IC three L2 of pin on, second resistance R2 after second resistance R2 connects with touch-switch SW1
The other end be connected to processing chip IC three L2 of pin is upper and the other end of touch-switch SW1 is grounded.
The one-way conduction of light emitting diode is utilized in the circuit, and when circuit carries out instruction function, 3 foot positions of IC are made
For output pin use, when as detection function, 3 foot positions of IC are used as input pin.When LED2 to be lighted,
L1, L2, L3 control are output pin, and L1 is low level, and L2 and L3 are high level；When LED3 to be lighted, L1, L2, L3 control
It is made as output pin, L1 is high level, and L2 and L3 are low level；When LED4 to be lighted, L1, L2, L3 control are output pin,
L1 and L2 is high level, and L3 is low level；When needing to detect touch-switch SW1, L1, L2, L3 are controlled as input pin
Detection, sets L1 to draw high state, in the case where pressing due to key SW1, L1 foot position will become low level, be examined at this time
It surveys whether L1 foot position becomes low level, that is, can determine whether key SW1 has operation, simultaneously because the conduction of diode, in L1
It is set as drawing high under state, the state of drawing high must be all arranged in L2 and L3 foot simultaneously, otherwise will appear the case where LED is lighted；
When needing with the presence or absence of detection external power supply VCC, it is only necessary to L1, L2, L3 are controlled and detected for input pin, directly detection L3's
Foot position whether high level, i.e., known to whether there is external power supply VCC.
By above 5 kinds of situations, it is scanned formula rotation processing, it can accomplish to share control.It needs to control every kind simultaneously
The phenomenon that time of situation processing is reasonable, and the scan frequency of indicator light need to be greater than 40Hz, just be not in flashing light on naked eyes, together
When, the detection time of key has to be larger than certain frequency, can just carry out the state for detecting key and carry out judging whether key
Effectively.Therefore the time of scanning must be provided with rationally.
The structure setting of the utility model is reasonable, and instruction is carried out foot position with detection and is shared, so as to effectively reduce
The packaging pin of matching treatment chip, so as to reduce use cost, stability in use is good and practical.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.And the obvious changes or variations that these connotations for belonging to the utility model are extended out still fall within it is practical
Novel protection scope.
Claims (1)
1. a kind of display shares scan-type control circuit, including processing chip with detection, it is characterised in that: further include the first electricity
It resistance, second resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second LED light, third LED light, the 4th LED light and touches out
It closes, the cathode of the 4th LED light is connected on the pin one of processing chip after the 8th resistance is connected with the 4th LED light, described
The other end of the 7th resistance is connected on the pin two of processing chip after 7th resistance is connected with third LED light, first electricity
Resistance is connected between the pin one and VCC of processing chip, and the other end of the 8th resistance and the cathode of third LED light are connected to
On the pin three for handling chip, the cathode of the second LED light is connected to processing chip after the 6th resistance is connected with the second LED light
Pin two on and the 6th resistance the other end be connected to processing chip pin three on, after second resistance is connected with touch-switch
The other end of second resistance is connected on the pin three of processing chip and the other end of touch-switch ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020732.7U CN208609237U (en) | 2018-06-29 | 2018-06-29 | Display shares scan-type control circuit with detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821020732.7U CN208609237U (en) | 2018-06-29 | 2018-06-29 | Display shares scan-type control circuit with detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208609237U true CN208609237U (en) | 2019-03-15 |
Family
ID=65667237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821020732.7U Expired - Fee Related CN208609237U (en) | 2018-06-29 | 2018-06-29 | Display shares scan-type control circuit with detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208609237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471869A (en) * | 2019-08-19 | 2019-11-19 | 深圳市双翼科技股份有限公司 | A kind of GPIO mouthfuls of peripheral circuit substrate, applied to circuit of PON and attaching method thereof |
| CN110662325A (en) * | 2018-06-29 | 2020-01-07 | 广东金莱特电器股份有限公司 | Display and detection common scanning type control circuit |
-
2018
- 2018-06-29 CN CN201821020732.7U patent/CN208609237U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110662325A (en) * | 2018-06-29 | 2020-01-07 | 广东金莱特电器股份有限公司 | Display and detection common scanning type control circuit |
| CN110471869A (en) * | 2019-08-19 | 2019-11-19 | 深圳市双翼科技股份有限公司 | A kind of GPIO mouthfuls of peripheral circuit substrate, applied to circuit of PON and attaching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190315 Termination date: 20190629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |