CN206272589U - A kind of digital sound MCU circuits for improving reset function - Google Patents
A kind of digital sound MCU circuits for improving reset function Download PDFInfo
- Publication number
- CN206272589U CN206272589U CN201621477435.6U CN201621477435U CN206272589U CN 206272589 U CN206272589 U CN 206272589U CN 201621477435 U CN201621477435 U CN 201621477435U CN 206272589 U CN206272589 U CN 206272589U
- Authority
- CN
- China
- Prior art keywords
- triode
- mcu
- resistance
- powers
- colelctor electrode
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
The utility model discloses a kind of digital sound MCU circuits for improving reset function, resistance R601 one end connection MCU+5V powers, the base stage of other end connecting triode Q601；The anode connection MCU+5V of diode D601 powers, the emitter stage of negative electrode connecting triode Q601；The base stage and the base stage of triode Q603 of the colelctor electrode difference connecting triode Q602 of triode Q601；The positive electrode of the emitter stage connection discharge tube C601 of triode Q601, the emitter stage of connecting triode Q602 and the emitter stage of triode Q603 connect the negative electrode of discharge tube C601 respectively；The colelctor electrode connection MCU of triode Q602 powers+3.3V, and the colelctor electrode connection MCU of triode Q603 powers+1.8V.The utility model simple structure, shortens MCU power down times, reduces the electricity in the critical point of MCU and occurs crashing or the abnormal probability of partial function, it is to avoid occurs crashing or the abnormal phenomenon of partial function.
Description
Technical field
The utility model is related to the MCU field of circuit technology of digital sound, more particularly, to a kind of improvement reset function
Digital sound MCU circuits.
Background technology
In the circuit structure of the high definition digital sound playback equipment such as CD audio, digital radio receiver now in the art, commonly use
MCU circuits there was only reset circuit, there is no discharge circuit, so cause MCU power down times long, go up again electricity run into MCU reset
Critical point probability becomes big, and the MCU unsuccessful phenomenons of reset often occur, can cause to crash or partial function is abnormal, therefore
It is necessary to be improved.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of digital sound for improving reset function
MCU circuits are rung, its simple structure shortens MCU power down times, it is to avoid occur crashing or the abnormal phenomenon of partial function.
To achieve these goals, the technical scheme that the utility model is used is.
A kind of digital sound MCU circuits for improving reset function, including MCU and charge/discharge control circuit, MCU+5V power and
Earth terminal connects the power connection end of MCU respectively, and charge/discharge control circuit connection discharge tube C601, charge/discharge control circuit is provided with diode
D601, resistance R601, triode Q601, Q602 and Q603, resistance R601 one end connection MCU+5V powers, the other end connects three poles
The base stage of pipe Q601；The anode connection MCU+5V of diode D601 powers, the emitter stage of negative electrode connecting triode Q601；Triode
The base stage and the base stage of triode Q603 of the colelctor electrode difference connecting triode Q602 of Q601；The emitter stage connection of triode Q601
The positive electrode of discharge tube C601, the emitter stage of connecting triode Q602 and the emitter stage of triode Q603 connect discharge tube respectively
The negative electrode of C601；The colelctor electrode connection MCU of triode Q602 powers+3.3V, and the colelctor electrode connection MCU of triode Q603 powers
+1.8V。
Being accessed in further technical scheme, between the triode Q601 and triode Q602/Q603 has a resistance R603,
The colelctor electrode of the first end connecting triode Q601 of resistance R603, the triode Q602's that second end of resistance R603 connects respectively
The base stage of base stage and triode Q603.
In further technical scheme, the powering access of connect between+3.3V of the colelctor electrode and MCU of the triode Q602 has one
Powering accesses of connect between+1.8V of colelctor electrode and the MCU of resistance R604, triode Q603 have a resistance R605.
After said structure, the utility model is compared to the prior art advantageously：The utility model structure
Simply, shorten MCU power down times, reduce the electricity in the critical point of MCU and occur crashing or the abnormal probability of partial function, keep away
Exempt from deadlock or the abnormal phenomenon of partial function occur.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is circuit block diagram of the present utility model.
Fig. 3 is circuit workflow diagram of the present utility model.
Fig. 4 is the discharge curve of the MCU circuits for not adding discharge circuit.
Fig. 5 is the discharge curve of MCU circuits of the present utility model.
Specific embodiment
As described below is only preferred embodiment of the present utility model, does not therefore limit protection model of the present utility model
Enclose.
A kind of embodiment, the digital sound MCU circuits of improvement reset function, is shown in that Fig. 1 to Fig. 5 shows, one kind improves reset work(
Can digital sound MCU circuits, including MCU and charge/discharge control circuit, MCU+5V power connect MCU respectively with earth terminal connect electricity
End, charge/discharge control circuit connection discharge tube C601, charge/discharge control circuit is provided with diode D601, resistance R601, triode
Q601, Q602 and Q603, resistance R601 one end connection MCU+5V powers, the base stage of other end connecting triode Q601；Diode
The anode connection MCU+5V of D601 powers, the emitter stage of negative electrode connecting triode Q601；The colelctor electrode of triode Q601 connects respectively
Connect the base stage of triode Q602 and the base stage of triode Q603；The positive electricity of the emitter stage connection discharge tube C601 of triode Q601
Pole, the emitter stage of connecting triode Q602 and the emitter stage of triode Q603 connect the negative electrode of discharge tube C601 respectively；Three poles
The colelctor electrode connection MCU of pipe Q602 powers+3.3V, and the colelctor electrode connection MCU of triode Q603 powers+1.8V.Triode Q601
Being accessed between triode Q602/Q603 has a resistance R603, the colelctor electrode of the first end connecting triode Q601 of resistance R603,
The base stage of the triode Q602 that second end of resistance R603 connects respectively and the base stage of triode Q603.The current collection of triode Q602
Powering access of connect between+3.3V of pole and MCU has a resistance R604, and the colelctor electrode and MCU of triode Q603 are powered between+1.8V
Series connection access has a resistance R605.
Digital sound complete machine powering starts, and MCU+5V powers during beginning to ramp up 5V by 0V, while passing through diode
D601 charges to discharge tube C601, and being charged when voltage is charged to 5V-0.7V (D601 pressure drops) stops.Triode Q601 emitter stages electricity
Force down in base voltage, triode Q601 cut-offs, triode Q602 and Q603 cut-off.When whole machine power down, what MCU+5V powered
Voltage begins to decline, and when 4.3V-0.6V is dropped to, the voltage on discharge tube C601 is triode Q601 emitter junction pressure drops, three
Pole pipe Q601 emitter junctions are in the conduction state, and the electric energy of discharge tube C601 storages is supplied to three poles by the triode Q601 for turning on
Pipe Q602 and 603, triode Q602 and 603 forward bias, the conductings of triode Q602 and 603, respectively by resistance R604 and 605
It is rapid to bleed off the MCU+3.3V and MCU+1.8V that power that power, reach the purpose of the rapid power down of MCU, discharge curve such as Fig. 5 institutes
Show.
Above content is only preferred embodiment of the present utility model, for one of ordinary skill in the art, according to this reality
With new thought, will change in specific embodiments and applications, this specification content should not be construed as
To limitation of the present utility model.
Claims (3)
1. a kind of digital sound MCU circuits for improving reset function, including MCU and charge/discharge control circuit, MCU+5V powers and connects
Ground terminal connects the power connection end of MCU respectively, and charge/discharge control circuit connection discharge tube C601 is characterised by：Charge/discharge control circuit is set
There are diode D601, resistance R601, triode Q601, Q602 and Q603, resistance R601 one end connection MCU+5V powers, the other end
The base stage of connecting triode Q601；The anode connection MCU+5V of diode D601 powers, the transmitting of negative electrode connecting triode Q601
Pole；The base stage and the base stage of triode Q603 of the colelctor electrode difference connecting triode Q602 of triode Q601；Triode Q601's
The positive electrode of emitter stage connection discharge tube C601, the emitter stage of connecting triode Q602 and the emitter stage of triode Q603 connect respectively
Connect the negative electrode of discharge tube C601；The colelctor electrode connection MCU of triode Q602 powers+3.3V, and the colelctor electrode of triode Q603 connects
MCU is met to power+1.8V.
2. it is according to claim 1 it is a kind of improve reset function digital sound MCU circuits, it is characterised in that：Described three
Being accessed between pole pipe Q601 and triode Q602/Q603 has a resistance R603, the first end connecting triode Q601 of resistance R603
Colelctor electrode, the base stage and the base stage of triode Q603 of the triode Q602 that second end of resistance R603 connects respectively.
3. it is according to claim 2 it is a kind of improve reset function digital sound MCU circuits, it is characterised in that：Described three
The powering access of connect between+3.3V of the colelctor electrode and MCU of pole pipe Q602 has a resistance R604, the colelctor electrode of triode Q603 with
Powering accesses of connect between+1.8V of MCU have a resistance R605.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477435.6U CN206272589U (en) | 2016-12-30 | 2016-12-30 | A kind of digital sound MCU circuits for improving reset function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477435.6U CN206272589U (en) | 2016-12-30 | 2016-12-30 | A kind of digital sound MCU circuits for improving reset function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272589U true CN206272589U (en) | 2017-06-20 |
Family
ID=59048218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621477435.6U Expired - Fee Related CN206272589U (en) | 2016-12-30 | 2016-12-30 | A kind of digital sound MCU circuits for improving reset function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206272589U (en) |
-
2016
- 2016-12-30 CN CN201621477435.6U patent/CN206272589U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204103466U (en) | A kind of metal-oxide-semiconductor type solar recharging protective circuit | |
| CN101179185B (en) | USB interface short-circuit protection circuit and power supply with USB interface short-circuit protection function | |
| CN206595713U (en) | A kind of surge protection circuit | |
| CN206272589U (en) | A kind of digital sound MCU circuits for improving reset function | |
| CN204118791U (en) | The control protection electric circuit of portable power source | |
| CN207074888U (en) | A kind of LED display power supply backup circuit | |
| CN203708096U (en) | Power supply protection circuit and power supply | |
| CN103280865A (en) | Charging port with over-voltage protection | |
| CN203882882U (en) | External relay drive circuit | |
| CN206850491U (en) | Super capacitor charge and discharge power detection circuit | |
| CN201733130U (en) | Power supply management module circuit | |
| CN202503331U (en) | Circuit and battery for reducing self-consumption of battery management chip | |
| CN205862296U (en) | A kind of single-chip microcomputer under-voltage reset circuit | |
| CN104836316A (en) | Current-adjustable constant current charging circuit | |
| CN204597774U (en) | A kind of negative voltage transition circuit | |
| CN203911544U (en) | Reverse power delivery preventive mobile base-station transceiver | |
| CN205753603U (en) | A kind of photovoltaic voltage stabilizing charging circuit | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN205050070U (en) | Computer power supply circuit | |
| CN203151458U (en) | Switch driving circuit | |
| CN204179633U (en) | A kind of short-circuit protection circuit of LED power | |
| CN204465110U (en) | Quick charger circuit | |
| CN203941495U (en) | A kind of off-line feed circuit for microprocessor chip | |
| CN103560159B (en) | Protection circuit for photovoltaic cell group | |
| CN109245748A (en) | A kind of power-off self-start circuit |
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: 20170620 Termination date: 20211230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |