CN109660231A - A kind of high-precision low-power consumption clock generation method - Google Patents
A kind of high-precision low-power consumption clock generation method Download PDFInfo
- Publication number
- CN109660231A CN109660231A CN201811548582.1A CN201811548582A CN109660231A CN 109660231 A CN109660231 A CN 109660231A CN 201811548582 A CN201811548582 A CN 201811548582A CN 109660231 A CN109660231 A CN 109660231A
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- Prior art keywords
- clock
- low
- power consumption
- frequency
- high precision
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/012—Modifications of generator to improve response time or to decrease power consumption
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/06—Clock generators producing several clock signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
- H03K5/135—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals by the use of time reference signals, e.g. clock signals
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microcomputers (AREA)
Abstract
The invention discloses a kind of high-precision low-power consumption clock generation methods, comprising the following steps: S1, note high precision clock frequency are F1, low accuracy clock frequency is F2, define identical time T；S2, using high precision clock timing T, the clock number of generation is N1=T/F1；S3, using low accuracy clock timing T, the clock number of generation is N2=T/F2；S4, N1/F1=N2/F2 is obtained using N1=T/F1, N2=T/F2, to calculate F2=(N2*F1)/N1；S5, using F2 as clock frequency, low frequency clock circuit is timed.High precision and low-power consumption can be achieved the purpose that using the clock circuit that method of the invention generates, and without adding external devices in whole process, it is easy to operate, using convenient, at low cost, it can be widely applied on various single-chip microcontrollers.
Description
Technical field
The invention belongs to singlechip technology field, in particular to a kind of high-precision low-power consumption clock generation method.
Background technique
Single-chip microcontroller internal clocking is generally divided into high-speed, high precision clock and the low accuracy clock of low speed.When using high-speed, high precision
Power consumption is high when clock, is generally used to do single-chip microcontroller master clock or timing；And power consumption is very low when using low speed low accuracy clock, generally
Use is monitored for doing system.When some system should high precision clock require power consumption very low again when, become contradiction.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind can generate high precision and low-power consumption when
Clock, and without adding external devices in whole process, using convenient, high-precision low-power consumption clock generation method at low cost.
The purpose of the present invention is achieved through the following technical solutions: a kind of high-precision low-power consumption clock generation method,
The following steps are included:
S1, note high precision clock frequency are F1, low accuracy clock frequency is F2, define identical time T；
S2, using high precision clock timing T, the clock number of generation is N1=T/F1；
S3, using low accuracy clock timing T, the clock number of generation is N2=T/F2；
S4, N1/F1=N2/F2 is obtained using N1=T/F1, N2=T/F2, so that F2=(N2*F1)/N1 is calculated,
In, N2, F1, N1 are known parameters；
S5, using clock frequency F2 obtained in step S4 as clock frequency, low frequency clock circuit is timed,
Obtain the clock of high precision low-power consumption.
The beneficial effects of the present invention are: high precision and low function can be reached using the clock circuit that method of the invention generates
The purpose of consumption, and without adding external devices in whole process, it is easy to operate, using convenient, at low cost, it can be widely applied
In on various single-chip microcontrollers.
Detailed description of the invention
Fig. 1 is the flow chart of high-precision low-power consumption clock generation method of the invention.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, a kind of high-precision low-power consumption clock generation method, comprising the following steps:
S1, note high precision clock frequency are F1, low accuracy clock frequency is F2, define identical time T；
S2, using high precision clock timing T, the clock number of generation is N1=T/F1；
S3, using low accuracy clock timing T, the clock number of generation is N2=T/F2；
S4, N1/F1=N2/F2 is obtained using N1=T/F1, N2=T/F2, so that F2=(N2*F1)/N1 is calculated,
In, N2, F1, N1 are known parameters；
S5, using clock frequency F2 obtained in step S4 as clock frequency, low frequency clock circuit is timed,
Obtain the clock of high precision low-power consumption.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill disclosed the technical disclosures can make according to the present invention and various not depart from the other each of essence of the invention
The specific variations and combinations of kind, these variations and combinations are still within the scope of the present invention.
Claims (1)
1. a kind of high-precision low-power consumption clock generation method, which comprises the following steps:
S1, note high precision clock frequency are F1, low accuracy clock frequency is F2, define identical time T；
S2, using high precision clock timing T, the clock number of generation is N1=T/F1；
S3, using low accuracy clock timing T, the clock number of generation is N2=T/F2；
S4, N1/F1=N2/F2 is obtained using N1=T/F1, N2=T/F2, to calculate F2=(N2*F1)/N1, wherein
N2, F1, N1 are known parameters；
S5, using clock frequency F2 obtained in step S4 as clock frequency, low frequency clock circuit is timed, is obtained
The clock of high precision low-power consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548582.1A CN109660231A (en) | 2018-12-18 | 2018-12-18 | A kind of high-precision low-power consumption clock generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548582.1A CN109660231A (en) | 2018-12-18 | 2018-12-18 | A kind of high-precision low-power consumption clock generation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109660231A true CN109660231A (en) | 2019-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811548582.1A Pending CN109660231A (en) | 2018-12-18 | 2018-12-18 | A kind of high-precision low-power consumption clock generation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109660231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568750A (en) * | 2019-09-04 | 2019-12-13 | 西安矽力杰半导体技术有限公司 | Timing circuit and timing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236531A (en) * | 1996-09-06 | 1999-11-24 | 艾利森电话股份有限公司 | Method and apparatus for generating timing signals in a wireless communication unit |
| CN101072029A (en) * | 2006-05-12 | 2007-11-14 | 捷顶微电子（上海）有限公司 | Multiple precision clock generating circuit on single chip and its realizing method |
-
2018
- 2018-12-18 CN CN201811548582.1A patent/CN109660231A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236531A (en) * | 1996-09-06 | 1999-11-24 | 艾利森电话股份有限公司 | Method and apparatus for generating timing signals in a wireless communication unit |
| CN101072029A (en) * | 2006-05-12 | 2007-11-14 | 捷顶微电子（上海）有限公司 | Multiple precision clock generating circuit on single chip and its realizing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568750A (en) * | 2019-09-04 | 2019-12-13 | 西安矽力杰半导体技术有限公司 | Timing circuit and timing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190419 |