CN102841534A - Clock circuit - Google Patents
Clock circuit Download PDFInfo
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- CN102841534A CN102841534A CN 201110171327 CN201110171327A CN102841534A CN 102841534 A CN102841534 A CN 102841534A CN 201110171327 CN201110171327 CN 201110171327 CN 201110171327 A CN201110171327 A CN 201110171327A CN 102841534 A CN102841534 A CN 102841534A
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- clock chip
- clock
- pin
- power supply
- work power
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- Oscillators With Electromechanical Resonators (AREA)
- Electric Clocks (AREA)
Abstract
The present invention discloses a clock circuit, which comprises a clock chip. A first pin of a crystal oscillator is connected with an oscillator input terminal of the clock chip. A third resistor is connected between a work power supply pin of the clock chip and a battery. A second resistor is connected between a second communication port of the clock chip and a second work power supply. A first resistor is connected between a first communication port of the clock chip and the second work power supply. A second pin of the crystal oscillator is connected with an oscillator output terminal of the clock chip. An ordinary capacitor and an electrolysis capacitor are connected between the work power supply pin of the clock chip and the ground in a cross cover manner. A diode is connected between the work power supply pin of the clock chip and a first work power supply in a reverse connection manner. The clock circuit of the present invention has characteristics of simple structure and convenient use, and can be used in situations requiring Beijing time display, wherein the situations comprise real-time system control, water heaters, clock calendars, facsimile apparatuses, instrument instrumentation controllers.
Description
Technical field
The present invention relates to a kind of application circuit, concrete relate to a kind of clock circuit.
Background technology
Clock circuit is used very extensively, like the clock circuit of the clock circuit of the clock circuit of computer, electronic watch and MP3, MP4.Clock circuit generally is made up of crystal oscillator, brilliant shake control chip and electric capacity.Existing clock circuit is varied of a great variety, but most complex structure, function is complicated; And only need under the application scenario of function singleness at some, adopting the driving circuit of complicated circuit construction often, cost can increase so on the one hand; In addition on the one hand; After circuit structure was in a single day complicated, its labile factor was behind so just reducing product percent of pass virtually also increasing.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of clock circuit simple in structure, cheap, easy to use.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of clock circuit; Comprise clock chip; First pin of crystal oscillator connects the oscillator input end of said clock chip; Be connected the 3rd resistance between the working power pin of said clock chip and the battery, be connected second resistance between second communication port of said clock chip and second working power, be connected first resistance between first communication port of said clock chip and second working power; The 3rd pin ground connection of said crystal oscillator; Second pin of said crystal oscillator connects the oscillator output end of said clock chip; Common electric capacity of cross-over connection and electrochemical capacitor between the working power pin of said clock chip and the ground, reversal connection diode between the working power pin of said clock chip and first working power.
The course of work of clock circuit of the present invention is following:
Said crystal oscillator is that said clock chip provides system clock, and said clock chip will generate required clock frequency, and then externally will show the time.
The present invention has the following advantages:
Clock circuit of the present invention simple in structure, easy to use.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the circuit theory diagrams of clock circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technology implementation process of the present invention is further specified.
Referring to shown in Figure 1; A kind of clock circuit; Comprise clock chip IC1, first pin of crystal oscillator Y1 connects the oscillator input end OSCI of said clock chip IC1, is connected the 3rd resistance R 3 between the working power pin VDD of said clock chip IC1 and the battery BT1; Be connected second resistance R 2 between the second communication port SDA of said clock chip IC1 and the second working power V2, be connected first resistance R 1 between the first communication port SCL of said clock chip IC1 and the second working power V2; The 3rd pin ground connection of said crystal oscillator Y1; Second pin of said crystal oscillator Y1 connects the oscillator output end OSCO of said clock chip IC1; Common electric capacity C1 of cross-over connection and electrochemical capacitor E1 between the working power pin VDD of said clock chip IC1 and the ground, reversal connection diode D1 between the working power pin VDD of said clock chip IC1 and first working power.
The foregoing description just is to let the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this in order technical conceive of the present invention and characteristics to be described, to be its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (1)
1. clock circuit; Comprise clock chip (IC1); It is characterized in that: first pin of crystal oscillator (Y1) connects the oscillator input end (OSCI) of said clock chip (IC1); Be connected the 3rd resistance (R3) between the working power pin (VDD) of said clock chip (IC1) and the battery (BT1); Be connected second resistance (R2) between second communication port (SDA) of said clock chip (IC1) and second working power (V2), be connected first resistance (R1) between first communication port (SCL) of said clock chip (IC1) and second working power (V2); The 3rd pin ground connection of said crystal oscillator (Y1); Second pin of said crystal oscillator (Y1) connects the oscillator output end (OSCO) of said clock chip (IC1); Common electric capacity of cross-over connection (C1) and electrochemical capacitor (E1) between the working power pin (VDD) of said clock chip (IC1) and the ground, reversal connection diode (D1) between the working power pin (VDD) of said clock chip (IC1) and first working power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110171327 CN102841534A (en) | 2011-06-23 | 2011-06-23 | Clock circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110171327 CN102841534A (en) | 2011-06-23 | 2011-06-23 | Clock circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102841534A true CN102841534A (en) | 2012-12-26 |
Family
ID=47369006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110171327 Pending CN102841534A (en) | 2011-06-23 | 2011-06-23 | Clock circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102841534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716981A (en) * | 2013-12-30 | 2014-04-09 | 惠州Tcl家电集团有限公司 | PCB for stabilizing clock signals and wiring method for PCB |
-
2011
- 2011-06-23 CN CN 201110171327 patent/CN102841534A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716981A (en) * | 2013-12-30 | 2014-04-09 | 惠州Tcl家电集团有限公司 | PCB for stabilizing clock signals and wiring method for PCB |
| CN103716981B (en) * | 2013-12-30 | 2017-11-17 | 惠州Tcl家电集团有限公司 | The PCB and its wiring method of stable clock signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |