CN209625009U - A kind of microcontroller communication control circuit - Google Patents
A kind of microcontroller communication control circuit Download PDFInfo
- Publication number
- CN209625009U CN209625009U CN201920159336.0U CN201920159336U CN209625009U CN 209625009 U CN209625009 U CN 209625009U CN 201920159336 U CN201920159336 U CN 201920159336U CN 209625009 U CN209625009 U CN 209625009U
- Authority
- CN
- China
- Prior art keywords
- resistance
- connect
- triode
- connection
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Networks Using Active Elements (AREA)
Abstract
A kind of microcontroller communication control circuit, including single-chip microcontroller, transmission unit, receiving unit and connection unit；Single-chip microcontroller includes first singlechip and second singlechip, and transmission unit includes the first transmission unit and the second transmission unit, and receiving unit includes the first receiving unit and the second receiving unit；First transmission unit, the first receiving unit are connect with first singlechip, connection unit respectively, and the second transmission unit, the second receiving unit are connect with second singlechip, connection unit respectively.The utility model structure is simple, and when application can reduce PCB space.
Description
Technical field
The utility model belongs to field of circuit technology, specifically a kind of microcontroller communication control circuit.
Background technique
Currently, commonly using two or more single-chip microcontrollers in electronic circuit and mutually transmitting instruction or data.It is existing
Communication between two single-chip microcontrollers is that the signal receiving end for switching circuit two single-chip microcontrollers of control being made up of triode receives
Same control instruction is realized.But since this circuit structure is complicated, device is more, at high cost.Then using also
Light-coupled isolation, although signal has relatively high stability, cost is higher.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of microcontroller communication control circuits.
In order to solve the above-mentioned technical problem, the present invention takes following technical scheme:
A kind of microcontroller communication control circuit, including single-chip microcontroller, transmission unit, receiving unit and connection unit；
Single-chip microcontroller includes first singlechip and second singlechip, and transmission unit includes that the first transmission unit and second send list
Member, receiving unit include the first receiving unit and the second receiving unit；
First transmission unit, the first receiving unit are connect with first singlechip, connection unit respectively, the second transmission unit,
Second receiving unit is connect with second singlechip, connection unit respectively.
First transmission unit includes resistance R6, resistance R8, resistance R9, resistance R10 and triode Q2, triode Q2's
Base stage is connect with the one end resistance R9, the connecting pin the TXD1 connection of the resistance R9 other end and first singlechip, the current collection of triode Q2
Pole and resistance R6, resistance R8 access input power, the emitter ground connection of triode Q2, one end resistance R10 and three after being connected in series
The base stage of pole pipe Q2 connects, and the other end of resistance R10 is connect with connection unit again after connecting with the emitter of triode Q2.
The receiving unit includes resistance R7 and capacitor C4, and the one end resistance R7 is connected by conducting wire and the RXD1 of first singlechip
It is connect after connecing end connection, the other end and the connection of the one end capacitor C4 with connection unit, the other end ground connection of capacitor C4.
The emitter of the triode Q2 is also connected with capacitor C3, and capacitor C3 is connect with input power, and capacitor C3
It is connect with connection unit.
Second transmission unit includes resistance R1, resistance R2, resistance R3, resistance R5 and triode Q1, triode Q1's
Base stage is connect with the one end resistance R1, the connecting pin the TXD2 connection of the resistance R1 other end and second singlechip, the current collection of triode Q1
Pole and resistance R3, resistance R5 access input power, the emitter ground connection of triode Q1, the one end resistance R2 and three poles after being connected in series
The base stage of pipe Q1 connects, and the other end of resistance R2 is connect with connection unit again after connecting with the emitter of triode Q1.
The receiving unit includes resistance R4 and capacitor C2, and the one end resistance R4 is connected by the RXD2 of conducting wire and second singlechip
It is connect after connecing end connection, the other end and the connection of the one end capacitor C2 with connection unit, the other end ground connection of capacitor C2.
The emitter of the triode Q1 is also connected with capacitor C1, and capacitor C1 is connect with input power, and capacitor C1
It is connect with connection unit.
The utility model structure is simple, and device is few, at low cost.Easily design reduces PCB space.
Detailed description of the invention
Attached drawing 1 is the utility model circuit connection schematic illustration.
Specific embodiment
To further understand the features of the present invention, technological means and specific purposes achieved, function, below with reference to
Present invention is further described in detail with specific embodiment for attached drawing.
As shown in Fig. 1, the utility model is disclosed including single-chip microcontroller, transmission unit, receiving unit and connection unit 4；
Single-chip microcontroller includes first singlechip 7 and second singlechip 1, and transmission unit includes the first transmission unit 5 and the second transmission unit 3,
Receiving unit includes the first receiving unit 6 and the second receiving unit 2.
First transmission unit, the first receiving unit are connect with first singlechip, connection unit respectively, the second transmission unit,
Second receiving unit is connect with second singlechip, connection unit respectively.The circuit knot of first transmission unit and the second transmission unit
Structure is identical, and the circuit structure of the first receiving unit and the second receiving unit is identical.Using connection unit as intermediate symmetry setting first
Single-chip microcontroller and second singlechip, first singlechip and second singlechip all can serve as host or slave.
First transmission unit includes resistance R6, resistance R8, resistance R9, resistance R10 and triode Q2, triode Q2's
Base stage is connect with the one end resistance R9, the connecting pin the TXD1 connection of the resistance R9 other end and first singlechip, the current collection of triode Q2
Pole and resistance R6, resistance R8 access input power, the emitter ground connection of triode Q2, one end resistance R10 and three after being connected in series
The base stage of pole pipe Q2 connects, and the other end of resistance R10 is connect with connection unit again after connecting with the emitter of triode Q2.Resistance
R6 is pull-up resistor.
The receiving unit includes resistance R7 and capacitor C4, and the one end resistance R7 is connected by conducting wire and the RXD1 of first singlechip
It is connect after connecing end connection, the other end and the connection of the one end capacitor C4 with connection unit, the other end ground connection of capacitor C4.
The emitter of the triode Q2 is also connected with capacitor C3, and capacitor C3 is connect with input power, and capacitor C3
It is connect with connection unit.
Second transmission unit includes resistance R1, resistance R2, resistance R3, resistance R5 and triode Q1, triode Q1's
Base stage is connect with the one end resistance R1, the connecting pin the TXD2 connection of the resistance R1 other end and second singlechip, the current collection of triode Q1
Pole and resistance R3, resistance R5 access input power, the emitter ground connection of triode Q1, the one end resistance R2 and three poles after being connected in series
The base stage of pipe Q1 connects, and the other end of resistance R2 is connect with connection unit again after connecting with the emitter of triode Q1.Resistance R5
For pull-up resistor.
The receiving unit includes resistance R4 and capacitor C2, and the one end resistance R4 is connected by the RXD2 of conducting wire and second singlechip
It is connect after connecing end connection, the other end and the connection of the one end capacitor C2 with connection unit, the other end ground connection of capacitor C2.
The emitter of the triode Q1 is also connected with capacitor C1, and capacitor C1 is connect with input power, and capacitor C1
It is connect with connection unit.
First transmission unit and the second transmission unit are all correspondingly connected on the corresponding ports of connection unit, and first receives list
Member and the second receiving unit are equally correspondingly connected on the corresponding ports of connection unit.
If first singlechip 7 is host, second singlechip 4 is slave, when the TXD1 output of first singlechip is high electricity
Usually, triode Q2 is connected, and resistance R6 and resistance R8 junction level becomes low from height, passes through connection after capacitor C4 filtering
Unit 4 is connected to second singlechip 1 using the second filter capacitor C2 and resistance R4, and second singlechip receives low electricity at this time
It is flat, while first singlechip RXD1 also receives low level by resistance R7.
When the TXD1 of first singlechip output is low level, triode Q2 is not turned on, resistance R6 and the junction resistance R8
Level remains height, by connection unit 4 after capacitor C4 filtering, is connected to the using the second filter capacitor C2 and resistance R4
Two single-chip microcontrollers 1, second singlechip receives high level at this time, while first singlechip RXD1 also receives high electricity by resistance R7
It is flat.
If second singlechip 1 is host, first singlechip 7 is slave, when the TXD2 output of second singlechip is high electricity
Usually, triode Q1 is connected, and resistance R5 and resistance R3 junction level becomes low from height, single by connection after capacitor C2 filtering
Member 4, is connected to first singlechip 7 using the second filter capacitor C4 and resistance R7, and first singlechip receives low level at this time,
Second singlechip RXD2 also receives low level by resistance R4 simultaneously.
When the TXD2 of second singlechip output is low level, triode Q1 is not turned on, resistance R5 and the junction resistance R3
Level remains height, by connection unit 4 after capacitor C2 filtering, is connected to the using the first filter capacitor C4 and resistance R7
One single-chip microcontroller 7, first singlechip receives high level at this time, while second singlechip RXD2 also receives high electricity by resistance R4
It is flat.
In this practical circuit, host machine part and slave portion are in addition to single-chip microcontroller, only with 16 components, and host and slave
It only can complete to send and receive processing with three line connections, structure is simple, and design and the cost of raw material greatly reduces.
Reduce PCB design space.
It should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although ginseng
According to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned reality
Technical solution documented by example is applied to modify or equivalent replacement of some of the technical features, but it is all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (7)
1. a kind of microcontroller communication control circuit, which is characterized in that single including single-chip microcontroller, transmission unit, receiving unit and connection
Member；
Single-chip microcontroller includes first singlechip and second singlechip, and transmission unit includes the first transmission unit and the second transmission unit,
Receiving unit includes the first receiving unit and the second receiving unit；
First transmission unit, the first receiving unit are connect with first singlechip, connection unit respectively, the second transmission unit, second
Receiving unit is connect with second singlechip, connection unit respectively.
2. microcontroller communication control circuit according to claim 1, which is characterized in that first transmission unit includes electricity
The base stage for hindering R6, resistance R8, resistance R9, resistance R10 and triode Q2, triode Q2 is connect with the one end resistance R9, and resistance R9 is another
One end and the connecting pin TXD1 of first singlechip connect, and collector and resistance R6, resistance the R8 series connection of triode Q2 is followed by
Enter input power, the emitter ground connection of triode Q2, the one end resistance R10 is connect with the base stage of triode Q2, and resistance R10's is another
End is connect with connection unit again after connecting with the emitter of triode Q2.
3. microcontroller communication control circuit according to claim 2, which is characterized in that the receiving unit includes resistance R7
With capacitor C4, the one end resistance R7 is connected by the connection of the connecting pin RXD1 of conducting wire and first singlechip, the other end and the one end capacitor C4
It is connect after connecing with connection unit, the other end ground connection of capacitor C4.
4. microcontroller communication control circuit according to claim 3, which is characterized in that the emitter of the triode Q2 is also
It is connected with capacitor C3, capacitor C3 is connect with input power, and capacitor C3 is connect with connection unit.
5. microcontroller communication control circuit according to claim 1, which is characterized in that second transmission unit includes electricity
The base stage for hindering R1, resistance R2, resistance R3, resistance R5 and triode Q1, triode Q1 is connect with the one end resistance R1, and resistance R1 is another
End is connect with the connecting pin TXD2 of second singlechip, and the collector of triode Q1 accesses after being connected in series with resistance R3, resistance R5
Input power, the emitter ground connection of triode Q1, the one end resistance R2 connect with the base stage of triode Q1, the other end of resistance R2 and
It is connect again with connection unit after the emitter connection of triode Q1.
6. microcontroller communication control circuit according to claim 5, which is characterized in that the receiving unit includes resistance R4
With capacitor C2, the one end resistance R4 is connected by the connection of the connecting pin RXD2 of conducting wire and second singlechip, the other end and the one end capacitor C2
It is connect after connecing with connection unit, the other end ground connection of capacitor C2.
7. microcontroller communication control circuit according to claim 6, which is characterized in that the emitter of the triode Q1 is also
It is connected with capacitor C1, capacitor C1 is connect with input power, and capacitor C1 is connect with connection unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920159336.0U CN209625009U (en) | 2019-01-30 | 2019-01-30 | A kind of microcontroller communication control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920159336.0U CN209625009U (en) | 2019-01-30 | 2019-01-30 | A kind of microcontroller communication control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209625009U true CN209625009U (en) | 2019-11-12 |
Family
ID=68452495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920159336.0U Active CN209625009U (en) | 2019-01-30 | 2019-01-30 | A kind of microcontroller communication control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209625009U (en) |
-
2019
- 2019-01-30 CN CN201920159336.0U patent/CN209625009U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203466798U (en) | Serial-port switching device based on electronic switch | |
| CN202979095U (en) | Two-bus type fire-fighting telephone system | |
| CN203851126U (en) | Circuit realizing two-way communication by using single line | |
| CN110244630A (en) | Serial server based on programmable logic device online acquisition serial interface signal | |
| CN105472782B (en) | A kind of wireless communication terminal | |
| CN204760040U (en) | Serial ports burns record ware | |
| CN209625009U (en) | A kind of microcontroller communication control circuit | |
| CN210167853U (en) | Distribution automation terminal | |
| CN203178787U (en) | Switch control device and intelligent household system | |
| CN107517536A (en) | Breath light control circuit and electronic equipment | |
| CN103118143B (en) | Multiplex circuit of serial interface and Ethernet interface | |
| CN106372025B (en) | Bus type communicating circuit | |
| CN106597897B (en) | A kind of constant-current source multi-channel control interlock circuit | |
| CN110034989A (en) | CAN transmission circuit and CAN communication system | |
| CN105607542A (en) | Output interface equipment | |
| CN207097226U (en) | A kind of intelligent meter data recording system baud rate control circuit | |
| CN204231406U (en) | A kind of Multifunction cross of the quick-setting based on toggle switch is changed planes | |
| CN209543335U (en) | A kind of circuit of the address HRP-configured slave device I2C | |
| CN209593402U (en) | Passive isolated form RS232 serial communication circuit | |
| CN206686066U (en) | Frequency converter digital signal input end and frequency converter | |
| CN208238262U (en) | A kind of expansible communication system of gas instantaneous water heater compatibility | |
| CN206788242U (en) | A kind of communicator in single-phase broadband power line carrier kilowatt meter reading-out system | |
| CN203930380U (en) | A kind of switching signal wireless converter | |
| CN110535342A (en) | A kind of voltage-operated device and system | |
| CN206557281U (en) | electric energy efficiency monitoring terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |