CN205264196U - Multi -functional singlechip study board - Google Patents
Multi -functional singlechip study board Download PDFInfo
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- CN205264196U CN205264196U CN201620014196.4U CN201620014196U CN205264196U CN 205264196 U CN205264196 U CN 205264196U CN 201620014196 U CN201620014196 U CN 201620014196U CN 205264196 U CN205264196 U CN 205264196U
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Abstract
The utility model discloses a multi -functional singlechip study board, including module carrier board, module carrier board is fixed with the MCU module, the LED lamp module piece, buzzer module, independent button module, matrix button interface module, bluetooth interface module, PCF8563 clock module, infrared receiver module, reserve port module, photosensitive resistance comparator module, the programming module, + 3.3V power module, + 5V power interface module, temperature sensor module, DS1302 clock module, the DA digital analog conversion module, RGB module and liquid crystal display module. Multi -functional singlechip study board is equipped with a plurality of independences and ripe functional module, satisfies the demand of multiple different design nature experiments, improves the experimental technique level, and explorative expansion nature is strong, does benefit to the hardware ability of practice of strengthening the user, creativity and divergent thinking's cultivation.
Description
Technical field
The utility model relates to experiment teaching instrument apparatus field, relates in particular to a kind of multifunctional single-chip learning board.
Background technology
Along with developing rapidly of electronic technology, single-chip microcomputer is widely used in various intelligence systems and electronic instruction experiment, and this development board is the important content of electronic instruction experiment, and the study of single-chip microcomputer and exploitation become the compulsory course of numerous colleges and universities Electronics Specialties. But the modules of existing single-chip learning plate is fixedly connected with, make learner single-chip microcomputer hardware concatenation ability a little less than, be partial to software programming, ignored the importance of single-chip microcomputer hardware development design. And the functional module of existing single-chip learning plate is less, cannot contain the multiple application technology of single-chip microcomputer, its expansion and conventional efficient are lower.
Utility model content
The purpose of this utility model is to propose a kind of feature richness, module independence, expands the good multifunctional single-chip learning board of performance.
For reaching this object, the utility model by the following technical solutions:
A kind of multifunctional single-chip learning board, comprise module carrier plate, described module carrier plate is fixed with MCU module, LED lamp module, buzzer module, independent key-press module, matrix press-key interface module, blue tooth interface module, PCF8563 clock module, infrared receiving module, reserved port module, photo resistance comparator module, program burn writing module ,+3.3V power module ,+5V power supply interface module, temperature sensor module, DS1302 clock module, D/A D/A converter module, RGB module and LCD MODULE;
Described MCU module comprises singlechip chip and peripheral circuit, the RXD of described program burn writing module, TXD port corresponding RXD, the TXD port that is electrically connected to singlechip chip successively;
Described in two-way, temperature sensor module comprises temperature sensor U6, U7 and resistance R 91, the vdd terminal of described temperature sensor U6 and U7, one end of resistance R 91 and+the VCC end electrical connection of 3.3V power module, the GND end ground connection of described temperature sensor U6 and U7, the DQ end of described temperature sensor U6 and U7 is electrically connected with the other end of resistance R 91 and is drawn and be fixed on described module carrier plate by row's pin; Described D/A D/A converter module comprises resistance R 104, R105, R106 and capacitor C 31, C32, one end of described resistance R 104 is electrically connected with the PWM of singlechip chip end, one end of described resistance R 105, one end of capacitor C 31 are electrically connected with the other end of resistance R 104, one end of described resistance R 106 is electrically connected with the A/D of singlechip chip end, one end of described capacitor C 32, the other end of resistance R 105, the other end of resistance R 106 and the D/A of singlechip chip end are electrically connected, the equal ground connection of the other end of the other end of described capacitor C 31 and described capacitor C 32.
Preferably, described PCF8563 clock module comprises PCF8563 chip U10, diode D85, capacitor C 27, C28, polar capacitor C29, crystal oscillator Y3 and paster toggle switch S10, the positive pole of described diode D85 is electrically connected with the VCC end of+3.3V power module, the negative pole of described diode D85, the vdd terminal electrical connection of the positive pole of polar capacitor C29 and PCF8563 chip U10, the minus earth of described polar capacitor C29, one end of described capacitor C 27, one end of crystal oscillator Y3 is electrically connected with the OSCI end of PCF8563 chip U10, one end of described capacitor C 28, the other end of crystal oscillator Y3 is electrically connected with the OSCOCLK end of PCF8563 chip U10, the other end of described capacitor C 27, the other end of capacitor C 28, the VSS end ground connection of the negative pole of polar capacitor C29 and PCF8563 chip U10, the SCL end of described PCF8563 chip U10 is electrically connected with 1 port of paster toggle switch S10, the SDA end of described PCF8563 chip U10 is electrically connected with 2 ports of paster toggle switch S10, 4 ports of described paster toggle switch S10 are electrically connected with 9 ports of singlechip chip, 3 ports of described paster toggle switch S10 are electrically connected with 10 ports of singlechip chip, OUT end and the INT ' of described PCF8563 chip U10 hold unsettled.
Preferably, described program burn writing module comprises that program burn writing chip U2, USB_A female seat U3, polar capacitor C30, crystal oscillator Y1, burning interface U4, light emitting diode D65, diode D66, resistance R 63, R64, R65, R66, capacitor C 3, C4, C5, switch SW 1, programming outreach interface S1 and fuse PC1, described burning interface U4 is 4 pin single row pins, it is 4 pin double-row pins that described programming outreaches interface S1, the 3rd pin of described burning interface U4, the 4th pin successively corresponding and programming outreaches the 2nd pin of interface S1, the 4th pin electrical connection, the 1st pin that described programming outreaches interface S1 is electrically connected with the positive pole of diode D66, the negative pole of described diode D66 is electrically connected with the TXD end of program burn writing chip U2, described programming outreaches the 3rd pin of interface S1 and one end of resistance R 66 electrical connection, the other end of described resistance R 66 is electrically connected with the RXD end of program burn writing chip U2, one end of described crystal oscillator Y1, one end of capacitor C 3 is electrically connected with the XI end of program burn writing chip U2, the other end of described crystal oscillator Y1, one end of capacitor C 4 is electrically connected with the XO end of program burn writing chip U2, one end of described capacitor C 5 is electrically connected with the V3 end of program burn writing chip U2, the Data-end of described USB_A female seat U3 is electrically connected with the UD-end of program burn writing chip U2 by resistance R 63, the Data+ end of described USB_A female seat U3 is electrically connected with the UD+ end of program burn writing chip U2 by resistance R 64, the positive pole of described polar capacitor C30, one end of fuse PC1 is electrically connected with the VCC end of USB_A female seat U3, one end of described switch SW 1, one end of resistance R 65, the 1st pin of burning interface U4 is electrically connected with the VCC end of+3.3V power module, the other end of described resistance R 65 is electrically connected with the positive pole of light emitting diode D65, the other end of described fuse PC1, the VCC end of program burn writing chip U2, the other end of switch SW 1 is electrically connected with the output of+5V power supply interface module, the negative pole of described polar capacitor C30, capacitor C 3, the other end of C4 and C5, the GND end of program burn writing chip U2, the GND end of USB_A female seat U3, the equal ground connection of the 2nd pin of the negative pole of light emitting diode D65 and burning interface U4, other ports of described program burn writing chip U2 are unsettled, described programming outreaches interface S1 and is connected with the corresponding ports of described MCU module by jumping cap.
Preferably, described photo resistance comparator module is provided with two photo resistance comparison circuits, and each photo resistance comparison circuit comprises voltage comparator U11, photo resistance G4, potentiometer RP_4, resistance R 97, R98, light emitting diode D82 and capacitor C 11, one end of described resistance R 97, 1 port of potentiometer RP_4, the power end of voltage comparator U11, the positive pole of light emitting diode D82 is all electrically connected with the VCC end of+3.3V power module, one end of described photo resistance G4, one end of capacitor C 11, the IN-end of voltage comparator U11 is electrically connected with the other end of resistance R 97, the other end ground connection of described photo resistance G4, the 2 port ground connection of described potentiometer RP_4, 3 ports of described potentiometer RP_4 are electrically connected with the IN+ of voltage comparator U11 end, the other end ground connection of described capacitor C 11, the negative pole of described light emitting diode D82 is electrically connected with one end of resistance R 98, the other end of described resistance R 98 is electrically connected with the OUT end of voltage comparator U11, the earth terminal ground connection of described voltage comparator U11, the OUT end of described voltage comparator U11 is drawn and is fixed on described module carrier plate by row's pin.
Preferably, described DS1302 clock module comprises that DS1302 chip U5, button cell BT1, crystal oscillator Y2, capacitor C 9, C10, C16 and clock outreach interface P5, it is 6 pin double-row pins that described clock outreaches interface P5, the positive pole of described button cell BT1 is electrically connected with the VCC1 end of DS1302 chip U5, one end of described crystal oscillator Y2, one end of capacitor C 9 is electrically connected with the X1 end of DS1302 chip U5, the other end of described crystal oscillator Y2, one end of capacitor C 10 is electrically connected with the X2 end of DS1302 chip U5, the SCLK end of described DS1302 chip U5 is electrically connected with the 1st pin that clock outreaches interface P5, the I/O end of described DS1302 chip U5 is electrically connected with the 2nd pin that clock outreaches interface P5, RST ' the end of described DS1302 chip U5 is electrically connected with the 3rd pin that clock outreaches interface P5, described clock outreaches the 4th pin of interface P5, the 5th pin and the 6th pin be the 29th pin of corresponding and singlechip chip successively, the 30th pin and the electrical connection of the 31st pin, the VCC2 end of described DS1302 chip U5, one end of capacitor C 16 is electrically connected with the VCC end of+3.3V power module, the GND end of described DS1302 chip U5, capacitor C 9, the equal ground connection of negative pole of the other end of C10 and C16 and button cell BT1.
Preferably, the singlechip chip of described MCU module 2 is STC15W4K48S4 chip.
The program burn writing module of described multifunctional single-chip learning board is electrically connected to singlechip chip, realizes reception and the transmission of data. When use, other ports of the singlechip chip of described MCU module use row's pin to be electrically connected with the output of other modules, as used wherein one or more modules to use jumping cap that the respective pins of row's pin is connected, convenient and fast connection as required. Described multifunctional single-chip learning board is provided with multiple independent and ripe functional modules, the demand that meets multiple different designs experiment, improves experimental technique level, and explorative expansion is strong, be beneficial to the hardware ability of practice of strengthening user, the cultivation of creativity and divergent thinking.
Brief description of the drawings
Fig. 1 is the structural representation of one of them embodiment of the utility model;
Fig. 2 is the module frame chart of one of them embodiment of the utility model;
Fig. 3 is the temperature sensor module circuit diagram of one of them embodiment of the utility model;
Fig. 4 is the D/A D/A converter module circuit diagram of one of them embodiment of the utility model;
Fig. 5 is the PCF8563 clock module circuit diagram of one of them embodiment of the utility model;
Fig. 6 is the program burn writing module circuit diagram of one of them embodiment of the utility model;
Fig. 7 is the photo resistance comparator module circuit diagram of one of them embodiment of the utility model;
Fig. 8 is the DS1302 clock module circuit diagram of one of them embodiment of the utility model.
Wherein: module carrier plate 1; MCU module 2; LED lamp module 3; Buzzer module 4; Independent key-press module 5; Matrix press-key interface module 6; Blue tooth interface module 7; PCF8563 clock module 8; Infrared receiving module 9; Reserved port module 10; Photo resistance comparator module 11; Program burn writing module 12; + 3.3V power module 13; + 5V power supply interface module 14; Temperature sensor module 15; DS1302 clock module 16; D/A D/A converter module 17; RGB module 18; LCD MODULE 19; Voltage comparator U11; Photo resistance G4; Potentiometer RP_4; Resistance R 97, R98, R91,104, R105, R106, R63, R64, R65, R66; Light emitting diode D82, D65; Diode D85, D66; Capacitor C 11, C27, C28, C31, C32, C3, C4, C5, C9, C10, C16; PCF8563 chip U10; Polar capacitor C29, C30; Crystal oscillator Y1, Y2, Y3; Paster toggle switch S10; Temperature sensor U6, U7; Program burn writing chip U2; USB_A female seat U3; Burning interface U4; Switch SW 1; Programming outreaches interface S1; Fuse PC1; DS1302 chip U5; Button cell BT1; Clock outreaches interface P5.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
The multifunctional single-chip learning board of the present embodiment, as shown in Figure 1-2, comprise module carrier plate 1, described module carrier plate 1 is fixed with MCU module 2, LED lamp module 3, buzzer module 4, independent key-press module 5, matrix press-key interface module 6, blue tooth interface module 7, PCF8563 clock module 8, infrared receiving module 9, reserved port module 10, photo resistance comparator module 11, program burn writing module 12, + 3.3V power module 13, + 5V power supply interface module 14, temperature sensor module 15, DS1302 clock module 16, D/A D/A converter module 17, RGB module 18 and LCD MODULE 19,
Described MCU module 2 comprises singlechip chip and peripheral circuit, the RXD of described program burn writing module 12, TXD port corresponding RXD, the TXD port that is electrically connected to singlechip chip successively;
Temperature sensor module 15 described in two-way, as shown in Figure 3, comprise temperature sensor U6, U7 and resistance R 91, the vdd terminal of described temperature sensor U6 and U7, one end of resistance R 91 and+the VCC end electrical connection of 3.3V power module, the GND end ground connection of described temperature sensor U6 and U7, the DQ end of described temperature sensor U6 and U7 is electrically connected with the other end of resistance R 91 and is drawn and be fixed on described module carrier plate 1 by row's pin;
Described D/A D/A converter module 17, as shown in Figure 4, comprise resistance R 104, R105, R106 and capacitor C 31, C32, one end of described resistance R 104 is electrically connected with the PWM of singlechip chip end, one end of described resistance R 105, one end of capacitor C 31 is electrically connected with the other end of resistance R 104, one end of described resistance R 106 is electrically connected with the A/D of singlechip chip end, one end of described capacitor C 32, the other end of resistance R 105, the other end of resistance R 106 is electrically connected with the D/A of singlechip chip end, the equal ground connection of the other end of the other end of described capacitor C 31 and described capacitor C 32.
Described MCU module 2 is the control module of described multifunctional single-chip learning board, MCU is micro-control unit, that the frequency of central processing unit and specification are done to suitable reduction, and by perimeter interfaces such as internal memory, counter, USB, A/D conversions, even LCD drive circuit is all incorporated on one chip, form the computer of chip-scale, for doing various combination control in different application scenarios. Such as mobile phone, PC periphery, remote controller, to automotive electronics, industrial stepper motor, the control of robotic arm etc., all can see the figure of MCU.
The RXD of described program burn writing module 12, TXD port corresponding RXD, the TXD port that is electrically connected to singlechip chip successively, described RXD port is for receiving FPDP, and described TXD port is transmission FPDP, thereby realizes reception and the transmission of data. When use, other ports of the singlechip chip of described MCU module 2 use row's pin to be electrically connected with the output of other modules, as used wherein one or more modules to use jumping cap that the respective pins of row's pin is connected, convenient and fast connection as required.
In addition, the LED circuit for lamp that the employing high level on described LED lamp module 3 Wei62 roads drives, described buzzer module 4 provides prompting, the functions such as alarm, described matrix press-key interface module 6 is 4*4 matrix keyboard or 4*4 membrane keyboard, described in multichannel, RGB module 18 is for having the primitive colours lamp pearl circuit of three outputs, described+3.3V power module 13 and+5V power supply interface module 14 be that described multifunctional single-chip learning board is powered, described LCD MODULE 19 is provided with contrast adjustment potentiometer and can realizes character display function, be provided with described reserved port module 10 and can carry out Function Extension to described multifunctional single-chip learning board.
Described multifunctional single-chip learning board is provided with multiple independent and ripe functional modules, the demand that meets multiple different designs experiment, improves experimental technique level, and explorative expansion is strong, be beneficial to the hardware ability of practice of strengthening user, the cultivation of creativity and divergent thinking.
Described temperature sensor module 15 can meet the demand of multiple design experiment, such as air conditioner surroundings control, and warm equipment or machine in sensing building, and carry out process monitoring and control etc. The vdd terminal of described temperature sensor U6 and U7 is power input, and GND end is earth terminal, and DQ end is data I/O end. The DQ end of described temperature sensor U6 and U7 shares a bus and is connected and arranges pin and draw and be fixed on described module carrier plate 1, can realize the experiment of the multiple temperature sensors of monobus carry.
Described D/A D/A converter module 17 is for data signal is converted to analog signal, and one end of described resistance R 106 is electrically connected with the A/D of singlechip chip end, for described D/A D/A converter module 17 provides digital input signals; Be electrically connected with the PWM end of singlechip chip, for described D/A D/A converter module 17 provides high-speed pulse, the data signal of singlechip chip accesses described D/A D/A converter module 17 and is become analog signal and progressively adjusted required voltage D/A value according to the magnitude of voltage of A/D detection by pulse width modulation. Described D/A D/A converter module 17 utilizes described singlechip chip that high-speed pulse is provided, and without increasing extra analog-digital chip, simplified structure, reduces costs.
Preferably, described PCF8563 clock module 8, as shown in Figure 5, comprises PCF8563 chip U10, diode D85, capacitor C 27, C28, polar capacitor C29, crystal oscillator Y3 and paster toggle switch S10, the positive pole of described diode D85 is electrically connected with the VCC end of+3.3V power module, the negative pole of described diode D85, the vdd terminal electrical connection of the positive pole of polar capacitor C29 and PCF8563 chip U10, the minus earth of described polar capacitor C29, one end of described capacitor C 27, one end of crystal oscillator Y3 is electrically connected with the OSCI end of PCF8563 chip U10, one end of described capacitor C 28, the other end of crystal oscillator Y3 is electrically connected with the OSCOCLK end of PCF8563 chip U10, the other end of described capacitor C 27, the other end of capacitor C 28, the VSS end ground connection of the negative pole of polar capacitor C29 and PCF8563 chip U10, the SCL end of described PCF8563 chip U10 is electrically connected with 1 port of paster toggle switch S10, the SDA end of described PCF8563 chip U10 is electrically connected with 2 ports of paster toggle switch S10, 4 ports of described paster toggle switch S10 are electrically connected with 9 ports of singlechip chip, 3 ports of described paster toggle switch S10 are electrically connected with 10 ports of singlechip chip, OUT end and the INT ' of described PCF8563 chip U10 hold unsettled.
Described PCF8563 clock module 8 is provided with described PCF8563 chip U10, PCF8563 for PHILIPS Co. design produce a CMOS real-time clock and calendar, the most applicable low-power consumption application, also provides programmable clock out, interrupt output and brownout detector; By the two-way I of two lines2The all addresses of C bus serial transfer and data; Maximum bus speed is 400kbit/s, register address can write at every turn or read data byte after automatically increase progressively.
Described PCF8563 clock module 8 can provide multiple warning function, timer function, clock output function, interrupt output function and watchdog function. OSCI end, the OSCOCLK end of described PCF8563 chip U10 are respectively oscillator input, oscillator output end. The loop of described crystal oscillator Y3, capacitor C 27, C28 composition is oscillator, for described PCF8563 chip U10 provides clock signal. Described polar capacitor C29 plays energy storage and filter action. The SCL end of described PCF8563 chip, SDA end are respectively serial clock input, serial data I/O end. Described paster toggle switch S10 is 2 paster toggle switch, one end is electrically connected with SCL end and the SDA end of described PCF8563 chip U10, the other end is electrically connected with 9 and 10 ports of singlechip chip, if desired uses 8 needs of described PCF8563 clock module that described paster toggle switch S10 is beaten to ON and held.
Preferably, described program burn writing module 12, as shown in Figure 6, comprise that program burn writing chip U2, USB_A female seat U3, polar capacitor C30, crystal oscillator Y1, burning interface U4, light emitting diode D65, diode D66, resistance R 63, R64, R65, R66, capacitor C 3, C4, C5, switch SW 1, programming outreach interface S1 and fuse PC1, described burning interface U4 is 4 pin single row pins, it is 4 pin double-row pins that described programming outreaches interface S1, the 3rd pin of described burning interface U4, the 4th pin successively corresponding and programming outreaches the 2nd pin of interface S1, the 4th pin electrical connection, the 1st pin that described programming outreaches interface S1 is electrically connected with the positive pole of diode D66, the negative pole of described diode D66 is electrically connected with the TXD end of program burn writing chip U2, described programming outreaches the 3rd pin of interface S1 and one end of resistance R 66 electrical connection, the other end of described resistance R 66 is electrically connected with the RXD end of program burn writing chip U2, one end of described crystal oscillator Y1, one end of capacitor C 3 is electrically connected with the XI end of program burn writing chip U2, the other end of described crystal oscillator Y1, one end of capacitor C 4 is electrically connected with the XO end of program burn writing chip U2, one end of described capacitor C 5 is electrically connected with the V3 end of program burn writing chip U2, the Data-end of described USB_A female seat U3 is electrically connected with the UD-end of program burn writing chip U2 by resistance R 63, the Data+ end of described USB_A female seat U3 is electrically connected with the UD+ end of program burn writing chip U2 by resistance R 64, the positive pole of described polar capacitor C30, one end of fuse PC1 is electrically connected with the VCC end of USB_A female seat U3, one end of described switch SW 1, one end of resistance R 65, the 1st pin of burning interface U4 is electrically connected with the VCC end of+3.3V power module, the other end of described resistance R 65 is electrically connected with the positive pole of light emitting diode D65, the other end of described fuse PC1, the VCC end of program burn writing chip U2, the other end of switch SW 1 is electrically connected with the output of+5V power supply interface module, the negative pole of described polar capacitor C30, capacitor C 3, the other end of C4 and C5, the GND end of program burn writing chip U2, the GND end of USB_A female seat U3, the equal ground connection of the 2nd pin of the negative pole of light emitting diode D65 and burning interface U4, other ports of described program burn writing chip U2 are unsettled, described programming outreaches interface S1 and is connected with the corresponding ports of described MCU module 2 by jumping cap.
Described program burn writing module 12 can arrive described multifunctional single-chip learning board by control program programming by data wire. Described USB_A female seat is general series bus socket, controls programming program to single-chip microcomputer for transmitting. XI end, the XO end of described program burn writing chip U2 are respectively oscillator input, oscillator output end, are connected with the oscillator loop of described crystal oscillator Y3, capacitor C 27 and C28 composition. Because the VCC of described program burn writing chip U2 holds external+5V power supply, therefore the V3 of described program burn writing chip U2 holds by described capacitor C 5 ground connection, plays decoupling effect, eliminates the parasitic couplings between circuit network. The VCC end of described USB_A female seat U3 passes through fuse PC1, and external+5V power supply also passes through polar capacitor C30 ground connection; Described fuse PC1 is resettable fuse, prevents from that electric current is excessive to burn out described USB_A female seat U3; Described polar capacitor C30 plays energy storage filter action. The UD-end of described program burn writing chip U2 is electrically connected with the Data-of USB_A female seat U3 by resistance R 63, the UD+ end of described program burn writing chip U2 is electrically connected with the Data+ of USB_A female seat U3 by resistance R 64, thereby by serial data bus by program burn writing in described program burn writing chip U2, described resistance R 63 and R64 play metering function. Described switch SW 1 is the power switch of described multifunctional single-chip learning board, and light emitting diode D65 is power work indicator lamp. TXD end and RXD that one end that described programming outreaches interface S1 is connected to program burn writing chip U2 hold, the other end is connected to RXD end and the TXD end of singlechip chip, as need give as described in multifunctional single-chip learning board programming program need with jumping cap arranging the corresponding connection of pin. Described resistance R 66 and diode D66 can prevent that USB device from powering to singlechip chip, and described burning interface U4 is the serial ports connecting interface of described blue tooth interface module 7 and MCU module 2.
Preferably, described photo resistance comparator module 11 is provided with two photo resistance comparison circuits, each photo resistance comparison circuit, as shown in Figure 7, comprises voltage comparator U11, photo resistance G4, potentiometer RP_4, resistance R 97, R98, light emitting diode D82 and capacitor C 11, one end of described resistance R 97, 1 port of potentiometer RP_4, the power end of voltage comparator U11, the positive pole of light emitting diode D82 is all electrically connected with the VCC end of+3.3V power module, one end of described photo resistance G4, one end of capacitor C 11, the IN-end of voltage comparator U11 is electrically connected with the other end of resistance R 97, the other end ground connection of described photo resistance G4, the 2 port ground connection of described potentiometer RP_4, 3 ports of described potentiometer RP_4 are electrically connected with the IN+ of voltage comparator U11 end, the other end ground connection of described capacitor C 11, the negative pole of described light emitting diode D82 is electrically connected with one end of resistance R 98, the other end of described resistance R 98 is electrically connected with the OUT end of voltage comparator U11, the earth terminal ground connection of described voltage comparator U11, the OUT end of described voltage comparator U11 is drawn and is fixed on described module carrier plate 1 by row's pin.
Described photo resistance comparator module 11 is provided with two photo resistance comparison circuits, changes thereby realize output level height for detection of the light varience of surrounding environment, provides triggering signal. The resistance of described photo resistance G4 is with light varience, and the resistance that regulates described potentiometer RP_4 is the light sensation sensitivity of adjustable described photo resistance comparator module 11. Hold with IN-, the IN+ of voltage comparator U11 the voltage that is electrically connected more described photo resistance G4 and potentiometer RP_4 thereby one end of the photo resistance G4 of described photo resistance comparator module 11,3 ports of potentiometer RP_4 are corresponding successively: when the resistance of photo resistance G4 reduces because of light varience, thereby the IN+ terminal voltage that makes described voltage comparator U11 is greater than the voltage of IN-end, the OUT of described voltage comparator U11 end output high level voltage, otherwise OUT end output low level. Described light emitting diode D82 is electrified light emitting in the time that described voltage comparator U11 starts, and plays circuit working suggesting effect.
Preferably, described DS1302 clock module 16, as shown in Figure 8, comprises that DS1302 chip U5, button cell BT1, crystal oscillator Y2, capacitor C 9, C10, C16 and clock outreach interface P5, it is 6 pin double-row pins that described clock outreaches interface P5, the positive pole of described button cell BT1 is electrically connected with the VCC1 end of DS1302 chip U5, one end of described crystal oscillator Y2, one end of capacitor C 9 is electrically connected with the X1 end of DS1302 chip U5, the other end of described crystal oscillator Y2, one end of capacitor C 10 is electrically connected with the X2 end of DS1302 chip U5, the SCLK end of described DS1302 chip U5 is electrically connected with the 1st pin that clock outreaches interface P5, the I/O end of described DS1302 chip U5 is electrically connected with the 2nd pin that clock outreaches interface P5, RST ' the end of described DS1302 chip U5 is electrically connected with the 3rd pin that clock outreaches interface P5, described clock outreaches the 4th pin of interface P5, the 5th pin and the 6th pin be the 29th pin of corresponding and singlechip chip successively, the 30th pin and the electrical connection of the 31st pin, the VCC2 end of described DS1302 chip U5, one end of capacitor C 16 is electrically connected with the VCC end of+3.3V power module, the GND end of described DS1302 chip U5, capacitor C 9, the equal ground connection of negative pole of the other end of C10 and C16 and button cell BT1.
DS1302 is a kind of high-performance of releasing of dallas, u.s.a semiconductor company, has the low-power consumption real-time timepiece chip of the thin current charges ability of tiny stream, operating voltage is 2.5V～5.5V, adopt three-wire interface and CPU to carry out synchronous communication, and can adopt burst mode once to transmit clock signal or the RAM data of multiple bytes, there is the ram register for provisional store data of 31 × 8 DS1302 inside.
Described DS1302 clock module 16 is real-time clock module, can to year, month, day, Sunday, time, point and second carry out timing, there is leap year compensate function. X1 end, the X2 end of described DS1302 chip U5 are respectively oscillator input, oscillator output end. The loop of described crystal oscillator Y2, capacitor C 9 and C10 composition is oscillator, for described DS1302 chip U5 provides clock signal. The VCC2 end of described DS1302 chip U5 is main power source, external+3.3V power supply; The VCC1 end of described DS1302 chip U5 is stand-by power supply, external described button cell BT1; Thereby in the situation that main power source cuts out, also can keep the continuous operation of described DS1302 clock module 16. Described capacitor C 16 is electrically connected with the GND end of described DS1302 clock chip U5, plays decoupling filter action. Described clock outreaches one end of interface P5 and the SCLK of DS1302 clock chip U5 end, I/O end and RST end are electrically connected, the other end is electrically connected with the 29th, 30 and 31 pins of singlechip chip, as needs use 16 of described DS1302 clock modules to use to jump caps as described in clock outreach the respective pins connection of interface P5.
Preferably, the singlechip chip of described MCU module 2 is STC15W4K48S4 chip. Described STC15W4K48S4 chip is a kind of low-power consumption, high-performance enhancement mode 51 singlechip chips that macrocrystalline scientific & technical corporation design is produced, and has dexterous CPU and at system programmable Flash, for embedded Control application system provides solution flexibly and effectively.
Know-why of the present utility model has below been described in conjunction with specific embodiments. These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain. Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (6)
1. a multifunctional single-chip learning board, comprises module carrier plate, and described module carrier plate is fixed withMCU module, LED lamp module, buzzer module, independent key-press module, matrix press-key interface module,Blue tooth interface module, PCF8563 clock module, infrared receiving module, reserved port module, photo resistanceComparator module, program burn writing module ,+3.3V power module ,+5V power supply interface module, TEMPDevice module, DS1302 clock module, D/A D/A converter module, RGB module and LCD MODULE,It is characterized in that:
Described MCU module comprises singlechip chip and peripheral circuit, the RXD of described program burn writing module,TXD port is corresponding RXD, the TXD port that is electrically connected to singlechip chip successively;
Described in two-way, temperature sensor module comprises temperature sensor U6, U7 and resistance R 91, described temperatureThe vdd terminal of sensor U6 and U7, one end of resistance R 91 and+the VCC end of 3.3V power module is electrically connectedMeet the GND end ground connection of described temperature sensor U6 and U7, described temperature sensor U6 and U7'sDQ end is electrically connected with the other end of resistance R 91 and is drawn and be fixed on described module carrier plate by row's pin;Described D/A D/A converter module comprises resistance R 104, R105, R106 and capacitor C 31, C32, described inOne end of resistance R 104 is electrically connected with the PWM of singlechip chip end, one end of described resistance R 105, electricityThe one end that holds C31 is electrically connected with the other end of resistance R 104, one end of described resistance R 106 and monolithic movementThe A/D end electrical connection of sheet, one end of described capacitor C 32, the other end of resistance R 105, resistance R 106The D/A end of the other end and singlechip chip be electrically connected, the other end of described capacitor C 31 and described electric capacityThe equal ground connection of the other end of C32.
2. multifunctional single-chip learning board according to claim 1, is characterized in that: described PCF8563Clock module comprise PCF8563 chip U10, diode D85, capacitor C 27, C28, polar capacitor C29,Crystal oscillator Y3 and paster toggle switch S10; The VCC of the positive pole of described diode D85 and+3.3V power moduleEnd electrical connection, the negative pole of described diode D85, the positive pole of polar capacitor C29 and PCF8563 chip U10Vdd terminal electrical connection, the minus earth of described polar capacitor C29, one end of described capacitor C 27, crystalline substanceOne end of Y3 and the OSCI of the PCF8563 chip U10 end that shakes is electrically connected, one end of described capacitor C 28,The other end of crystal oscillator Y3 is electrically connected with the OSCOCLK end of PCF8563 chip U10, described capacitor C 27The negative pole of the other end, polar capacitor C29 of the other end, capacitor C 28 and PCF8563 chip U10VSS holds ground connection, the SCL end of described PCF8563 chip U10 and 1 port of paster toggle switch S10Electrical connection, SDA end and 2 ports of paster toggle switch S10 of described PCF8563 chip U10 are electrically connectedConnect, 4 ports of described paster toggle switch S10 are electrically connected with 9 ports of singlechip chip, described paster3 ports of toggle switch S10 are electrically connected with 10 ports of singlechip chip, described PCF8563 chip U10OUT end and INT ' hold unsettled.
3. multifunctional single-chip learning board according to claim 1, is characterized in that: described program is burntWriting module comprises program burn writing chip U2, USB_A female seat U3, polar capacitor C30, crystal oscillator Y1, burningRecord interface U4, light emitting diode D65, diode D66, resistance R 63, R64, R65, R66, electric capacityC3, C4, C5, switch SW 1, programming outreach interface S1 and fuse PC1; Described burning interface U4Be 4 pin single row pins, it is 4 pin double-row pins that described programming outreaches interface S1, described burning interfaceThe 3rd pin of U4, the 4th pin successively correspondence and programming outreach the 2nd pin, the 4th pin of interface S1Electrical connection, the 1st pin that described programming outreaches interface S1 is electrically connected with the positive pole of diode D66, described inThe negative pole of diode D66 is electrically connected with the TXD end of program burn writing chip U2, and described programming outreaches interfaceThe 3rd pin of S1 and one end of resistance R 66 electrical connection, the other end of described resistance R 66 and program burn writing coreThe RXD end electrical connection of sheet U2, one end of described crystal oscillator Y1, one end of capacitor C 3 and program burn writing coreThe XI end electrical connection of sheet U2, the other end of described crystal oscillator Y1, one end of capacitor C 4 and program burn writing chipThe XO end electrical connection of U2, one end of described capacitor C 5 is electrically connected with the V3 end of program burn writing chip U2,The Data-end of described USB_A female seat U3 is the UD-end electricity with program burn writing chip U2 by resistance R 63Connect, the Data+ end of described USB_A female seat U3 is the UD+ with program burn writing chip U2 by resistance R 64End electrical connection, the positive pole of described polar capacitor C30, one end of fuse PC1 and USB_A female seat U3VCC end electrical connection, one end of described switch SW 1, one end of resistance R 65, burning interface U4'sThe 1st pin is electrically connected with the VCC end of+3.3V power module, the other end of described resistance R 65 and luminous twoThe positive pole electrical connection of utmost point pipe D65, the other end of described fuse PC1, the VCC of program burn writing chip U2The other end of end, switch SW 1 is electrically connected with the output of+5V power supply interface module, described polar capacitorThe other end of negative pole, capacitor C 3, C4 and the C5 of C30, the GND of program burn writing chip U2 end, USB_AGND end, the negative pole of light emitting diode D65 and the equal ground connection of the 2nd pin of burning interface U4 of female seat U3,Other ports of described program burn writing chip U2 are unsettled, described programming outreach interface S1 by jump cap with described inThe corresponding ports of MCU module connects.
4. multifunctional single-chip learning board according to claim 1, is characterized in that: described photosensitive electricityResistance comparator module is provided with two photo resistance comparison circuits, and each photo resistance comparison circuit comprises voltage ratioCompared with device U11, photo resistance G4, potentiometer RP_4, resistance R 97, R98, light emitting diode D82 and electricityHold C11; The electricity of one end of described resistance R 97,1 port of potentiometer RP_4, voltage comparator U11The positive pole of source, light emitting diode D82 is all electrically connected with the VCC end of+3.3V power module, described photosensitiveThe IN-end of one end of resistance G4, one end of capacitor C 11, voltage comparator U11 is another with resistance R 97One end electrical connection, the other end ground connection of described photo resistance G4, the 2 port ground connection of described potentiometer RP_4,3 ports of described potentiometer RP_4 are electrically connected with the IN+ of voltage comparator U11 end, described capacitor C 11Other end ground connection, the negative pole of described light emitting diode D82 is electrically connected with one end of resistance R 98, described electricityThe resistance other end of R98 and the OUT of voltage comparator U11 end are electrically connected, described voltage comparator U11'sEarth terminal ground connection, the OUT end of described voltage comparator U11 is drawn by row's pin and is fixed on described moduleOn carrier board.
5. multifunctional single-chip learning board according to claim 1, is characterized in that: described DS1302Clock module comprises DS1302 chip U5, button cell BT1, crystal oscillator Y2, capacitor C 9, C10, C16Outreach interface P5 with clock; It is 6 pin double-row pins that described clock outreaches interface P5, described button cellThe positive pole of BT1 is electrically connected with the VCC1 end of DS1302 chip U5, one end of described crystal oscillator Y2, electric capacityOne end of C9 is electrically connected with the X1 end of DS1302 chip U5, the other end of described crystal oscillator Y2, electric capacityOne end of C10 is electrically connected with the X2 end of DS1302 chip U5, the SCLK of described DS1302 chip U5The 1st pin that end outreaches interface P5 with clock is electrically connected, the I/O of described DS1302 chip U5 hold and timeClock outreaches the 2nd pin electrical connection of interface P5, and the RST ' end of described DS1302 chip U5 outreaches with clockThe 3rd pin electrical connection of interface P5, described clock outreaches the 4th pin, the 5th pin and the of interface P56 pins are corresponding to be successively electrically connected with the 29th pin, the 30th pin and the 31st pin of singlechip chip, instituteState one end of VCC2 end, capacitor C 16 and the VCC end of+3.3V power module of DS1302 chip U5Electrical connection, the other end and the knob of GND end, capacitor C 9, C10 and the C16 of described DS1302 chip U5The equal ground connection of negative pole of button battery BT1.
6. multifunctional single-chip learning board according to claim 1, is characterized in that: described MCU mouldThe singlechip chip of piece is STC15W4K48S4 chip.
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| CN201620014196.4U CN205264196U (en) | 2016-01-05 | 2016-01-05 | Multi -functional singlechip study board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513470A (en) * | 2016-01-05 | 2016-04-20 | 华南理工大学广州学院 | Multifunctional one-chip microcomputer learning board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513470A (en) * | 2016-01-05 | 2016-04-20 | 华南理工大学广州学院 | Multifunctional one-chip microcomputer learning board |
| CN105513470B (en) * | 2016-01-05 | 2018-04-06 | 华南理工大学广州学院 | A kind of multifunctional single-chip learning board |
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