CN107610734A - EEPROM power supply circuit and EEPROM - Google Patents
EEPROM power supply circuit and EEPROM Download PDFInfo
- Publication number
- CN107610734A CN107610734A CN201710919951.2A CN201710919951A CN107610734A CN 107610734 A CN107610734 A CN 107610734A CN 201710919951 A CN201710919951 A CN 201710919951A CN 107610734 A CN107610734 A CN 107610734A
- Authority
- CN
- China
- Prior art keywords
- eeprom
- power supply
- circuit
- diode
- supply circuit
- 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.)
- Granted
Links
Landscapes
- Semiconductor Integrated Circuits (AREA)
Abstract
The invention discloses the power supply circuit of EEPROM a kind of and EEPROM, the power supply circuit of the EEPROM includes Clock Signal pin, data signal pin and grounding pin, and power supply circuit includes the first diode and electric capacity；Clock Signal pin electrically connects with the positive pole of the first diode and the clock signal input terminal of internal circuit respectively；Data signal pin electrically connects with the data signal input of the internal circuit；One end of the electric capacity electrically connects with the negative pole of first diode and the power input of the internal circuit respectively, and power output end of the other end respectively with the grounding pin and the internal circuit electrically connects.The present invention provides one kind in the case where reducing by a power line, realizes the internal circuit offer working power to EEPROM, so as to reduce the risk being easily disturbed because power line is oversize, and is easy to the EEPROM that user connected up power supply circuit and EEPROM.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to a kind of EEPROM (Electrically Erasable
Programmable Read and-Write Memory, electricallyerasable ROM (EEROM)) power supply circuit and EEPROM.
Background technology
As shown in figure 1, existing EEPROM includes supply lines and IIC (Inter-Integrated Circuit, integrates electricity
Road bus) connection 4 altogether.Wherein, supply lines includes power line and ground wire, and power line and EEPROM control source are drawn
Pin VCC is electrically connected, and provides 3.3V DC voltage, the grounding pin GND of ground wire and EEPROM to EEPROM by power line
Point connection.Connection includes the clock of clock signal input lines and data-signal input line, clock signal input lines and EEPROM
Signal pins SCL is electrically connected, and data-signal input line electrically connects with EEPROM data signal pin SDA, Clock Signal pin
SCL and data signal pin SDA is electrically connected by a resistance with external power supply 3.3V respectively.But due to actual mechanical process
In, the power line being connected with EEPROM is often longer, easily produces interference to EEPROM working condition.
The content of the invention
The technical problem to be solved in the present invention be in order to overcome power line existing for the EEPROM of prior art often longer,
The defects of disturbing easily is produced, and it is an object of the present invention to provide a kind of EEPROM power supply circuit and EEPROM to EEPROM working condition.
The present invention is that solve above-mentioned technical problem by following technical proposals：
The present invention provides a kind of EEPROM power supply circuit, and the EEPROM includes Clock Signal pin, data-signal draws
Pin and grounding pin, the power supply circuit include the first diode and electric capacity；
The Clock Signal pin respectively with the positive pole of first diode and the EEPROM internal circuit when
Clock signal input part electrically connects；
The data signal pin electrically connects with the data signal input of the internal circuit of the EEPROM；
One end of the electric capacity is electric with the negative pole of first diode and the power input of the internal circuit respectively
Connection, power output end of the other end respectively with the grounding pin and the internal circuit electrically connect.
It is preferred that the power supply circuit also includes the second diode；
The positive pole of second diode electrically connects with the data signal pin, and negative pole is negative with first diode
Pole electrically connects.
It is preferred that the Clock Signal pin, the data signal pin are electrically connected by a resistance and external power supply respectively
Connect.
It is preferred that the span of the resistance is 1K Ω~10K Ω.
It is preferred that the external power supply is 3.3V dc source.
It is preferred that first diode and second diode are Schottky diode.
It is preferred that the internal circuit of the EEPROM includes communicating circuit and storage circuit；
The input of the communicating circuit respectively with the clock signal input terminal of the internal circuit of the EEPROM and described
The data signal input electrical connection of EEPROM internal circuit, and the communicating circuit electrically connects with the storage circuit；
The negative pole of the storage circuit electrically connects with the grounding pin.
The present invention also provides a kind of EEPROM, and the EEPROM includes above-mentioned EEPROM power supply circuit.
The positive effect of the present invention is：
The present invention EEPROM power supply circuit, by by EEPROM Clock Signal pin respectively with internal circuit when
The positive pole of clock signal input part and the first diode electrically connects, by the EEPROM data signal pin number with internal circuit respectively
Electrically connected according to the positive pole of signal input part and the second diode；By by one end of electric capacity respectively with the negative pole of the first diode and
The negative pole electrical connection of two diodes, the other end electrically connect with grounding pin, realize the charging process to itself, are reducing by an electricity
In the case of the line VCC of source, the internal circuit to EEPROM provides working power, is easily disturbed so as to reduce because power line is oversize
The problem of, and it is easy to user to be connected up, meet the actual requirement of user.
Brief description of the drawings
Fig. 1 is the electrical block diagram of EEPROM in the prior art；
Fig. 2 is the electrical block diagram of the EEPROM of embodiments of the invention 1 power supply circuit；
Fig. 3 is the EEPROM of embodiments of the invention 2 electrical block diagram.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.
As shown in Fig. 2 the electrical block diagram of the EEPROM of presently preferred embodiments of the present invention power supply circuit.
In the EEPROM of the present embodiment power supply circuit, the EEPROM includes Clock Signal pin SCL, data-signal draws
Pin SDA, grounding pin GND and internal circuit 1.
The power supply circuit includes the first diode D1, the second diode D2With electric capacity C.
Wherein, the first diode D1With the second diode D2It is Schottky diode, for ensureing by the
One diode D1Clock signal and pass through the second diode D2Data-signal one-way transmission, avoid signals reverse from transmitting out
Now mutual interference；Meanwhile to flowing through the first diode D1With the second diode D2High-frequency direct-current power supply enter
Row rectification is handled, then after electric capacity C filtering obtains relatively stable direct current and supply electricity to EEPROM internal circuit 1 powering.
The Clock Signal pin SCL respectively with the positive pole of the first diode D1 and the internal circuit of the EEPROM
1 clock signal input terminal b electrical connections；The data signal pin SDA positive pole with the second diode D2 and institute respectively
State the data signal input a electrical connections of EEPROM internal circuit 1.Distinguish first diode in one end of the electric capacity C
D1Negative pole and the second diode D2Negative pole electrical connection, the other end electrically connects with grounding pin GND, for the electricity
Hold C to be charged, so as to provide working power to EEPROM internal circuit 1.The power input c of internal circuit 1 with it is described
Electric capacity C one end electrical connection, power output end d electrically connect with the other end of the electric capacity C.
Wherein, the Clock Signal pin SCL passes through resistance R1Electrically connected with external power supply；The data signal pin
SDA passes through resistance R2Electrically connected with external power supply.Resistance R1With resistance R2Resistance span be 1K Ω~10K Ω, specific resistance
Value is depending on practical situations.The external power supply is 3.3V dc source.
The internal circuit 1 of the EEPROM includes communicating circuit 11 and storage circuit 12.The input of the communicating circuit 11
Hold the data-signal with the clock signal input terminal b and the EEPROM of the internal circuit of the EEPROM internal circuit respectively
Input a is electrically connected, and communicating circuit 11 electrically connects with the storage circuit 12, wherein, the communicating circuit 11 and the storage
Bidirectional data transfers can be carried out between circuit 12, i.e., with readable writeable function.The negative pole of the storage circuit 12 with it is described
Grounding pin GND is electrically connected.
Wherein, EEPROM of the invention does not include power pins, without individually being supplied EEPROM by power pins
Electricity.
The operation principle of the EEPROM of present invention power supply circuit is as follows：
The present invention is different from EEPROM of the prior art needs to use 4 lines when normal communication works, i.e., power line,
Ground wire, clock signal input lines and data-signal input line, but only with 3 lines：Ground wire, clock signal input lines and
Data-signal input line, realize in the case where reducing by a power line, by the way that EEPROM Clock Signal pin SCL is distinguished
Electrically connected with the clock signal input terminal b and the first diode D1 of internal circuit 1 positive pole, by EEPROM data signal pin
Positive poles of the SDA respectively with the data signal input a and the second diode D2 of internal circuit 1 electrically connects；By electric capacity C one end point
Not with the first diode D1Negative pole and the second diode D2Negative pole electrical connection, the other end electrically connects with grounding pin GND, enters
The row charging process of itself, the internal circuit to EEPROM provide working power, so as to reduce because power line is oversize easily by dry
The risk disturbed, and it is easy to user to be connected up, meet the actual requirement of user.
Embodiment 2
As shown in figure 3, the present embodiment also provides a kind of EEPROM, the EEPROM includes above-mentioned EEPROM power supply electricity
Road.
Although the foregoing describing the embodiment of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of principle and essence from the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen within modification.
Claims (8)
1. a kind of EEPROM power supply circuit, the EEPROM includes Clock Signal pin, data signal pin and grounding pin,
Characterized in that, the power supply circuit includes the first diode and electric capacity；
The Clock Signal pin is believed with the clock of the positive pole of first diode and the internal circuit of the EEPROM respectively
The electrical connection of number input；
The data signal pin electrically connects with the data signal input of the internal circuit of the EEPROM；
One end of the electric capacity electrically connects with the negative pole of first diode and the power input of the internal circuit respectively,
Power output end of the other end respectively with the grounding pin and the internal circuit electrically connects.
2. EEPROM as claimed in claim 1 power supply circuit, it is characterised in that the power supply circuit also includes the two or two pole
Pipe；
The positive pole of second diode electrically connects with the data signal pin, the negative electricity of negative pole and first diode
Connection.
3. EEPROM as claimed in claim 1 power supply circuit, it is characterised in that the Clock Signal pin, the data
Signal pins are electrically connected by a resistance with external power supply respectively.
4. EEPROM as claimed in claim 3 power supply circuit, it is characterised in that the span of the resistance be 1K Ω~
10KΩ。
5. EEPROM as claimed in claim 3 power supply circuit, it is characterised in that the external power supply is 3.3V direct current
Source.
6. EEPROM as claimed in claim 2 power supply circuit, it is characterised in that first diode and the described 2nd 2
Pole pipe is Schottky diode.
7. EEPROM as claimed in claim 1 power supply circuit, it is characterised in that the internal circuit of the EEPROM includes logical
Interrogate circuit and storage circuit；
The input of the communicating circuit respectively with the clock signal input terminal of the internal circuit of the EEPROM and described
The data signal input electrical connection of EEPROM internal circuit, and the communicating circuit electrically connects with the storage circuit；
The negative pole of the storage circuit electrically connects with the grounding pin.
8. a kind of EEPROM, it is characterised in that the EEPROM is included such as the EEPROM any one of claim 1-7
Power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919951.2A CN107610734B (en) | 2017-09-30 | 2017-09-30 | Power supply circuit of EEPROM and EEPROM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919951.2A CN107610734B (en) | 2017-09-30 | 2017-09-30 | Power supply circuit of EEPROM and EEPROM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107610734A true CN107610734A (en) | 2018-01-19 |
| CN107610734B CN107610734B (en) | 2020-12-25 |
Family
ID=61068035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710919951.2A Active CN107610734B (en) | 2017-09-30 | 2017-09-30 | Power supply circuit of EEPROM and EEPROM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107610734B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079285A (en) * | 2013-03-29 | 2014-10-01 | 国基电子（上海）有限公司 | Signal line receiving circuit, signal line power supply circuit and signal line power supply system |
| CN204189163U (en) * | 2014-11-04 | 2015-03-04 | 广州明美电子有限公司 | A kind of based on I2C bus from machine feed circuit and device |
| CN204316130U (en) * | 2014-12-25 | 2015-05-06 | 江苏理工学院 | Based on the battery feed circuit of GSM/GPRS module |
| CN106788370A (en) * | 2017-02-07 | 2017-05-31 | 湖南国科微电子股份有限公司 | Electronic device |
| CN107196770A (en) * | 2017-07-28 | 2017-09-22 | 深圳市瑞艾特科技有限公司 | The system being powered by signal wire |
-
2017
- 2017-09-30 CN CN201710919951.2A patent/CN107610734B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079285A (en) * | 2013-03-29 | 2014-10-01 | 国基电子（上海）有限公司 | Signal line receiving circuit, signal line power supply circuit and signal line power supply system |
| CN204189163U (en) * | 2014-11-04 | 2015-03-04 | 广州明美电子有限公司 | A kind of based on I2C bus from machine feed circuit and device |
| CN204316130U (en) * | 2014-12-25 | 2015-05-06 | 江苏理工学院 | Based on the battery feed circuit of GSM/GPRS module |
| CN106788370A (en) * | 2017-02-07 | 2017-05-31 | 湖南国科微电子股份有限公司 | Electronic device |
| CN107196770A (en) * | 2017-07-28 | 2017-09-22 | 深圳市瑞艾特科技有限公司 | The system being powered by signal wire |
Non-Patent Citations (2)
| Title |
|---|
| 张庆龙: "《HT48R系列单片机控制与网络传输应用》", 31 December 2006 * |
| 王红明: "《液晶彩色电视机维修从入门到精通 图解版》", 30 September 2015 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107610734B (en) | 2020-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105491730B (en) | A kind of LED lamp with USB interface string control system | |
| CN104239240A (en) | Electronic device with universal serial bus (USB) interface with integration function | |
| CN104505890B (en) | Mobile terminal | |
| CN103618353A (en) | Battery monitoring circuit | |
| CN204810286U (en) | Discernment supply circuit and ethernet power supply unit, system | |
| CN206524658U (en) | Portable power source pin multiplexing circuit | |
| CN103546114B (en) | Circuit according to pull-up voltage in the pull-up Voltage Cortrol bus of equipment and method thereof | |
| CN204680875U (en) | Quick charge data wire | |
| CN106611924A (en) | Communication device, switching device and communication system | |
| CN204651614U (en) | A kind of data wire with charging instruction | |
| CN203933099U (en) | A kind of portable power source device | |
| US20150185817A1 (en) | Charging circuit for usb interface | |
| CN107610734A (en) | EEPROM power supply circuit and EEPROM | |
| CN202421457U (en) | Motor over-current detection circuit | |
| CN103780279A (en) | Indoor energy efficiency management terminal communication module | |
| CN208028617U (en) | The embedded power supply and electric furniture of electric furniture | |
| CN204304165U (en) | Usb adapter | |
| CN209401012U (en) | A kind of USB interface power control | |
| CN103107591B (en) | A kind of electric supply installation of portable digital equipment and method | |
| CN203708369U (en) | Control circuit shared by MHL interface and HDMI interface, and display device | |
| CN209486164U (en) | Microcontroller power supply low-voltage detection circuit without A D interface and internal reference voltage | |
| CN207490566U (en) | For the mobile power of fan for cooling clothes | |
| CN205942601U (en) | Electronic equipment interface communication reduces device of consumption | |
| CN207397258U (en) | A kind of test nine kinds of needles turns SFP interface circuits | |
| CN105306039A (en) | Input/output circuit for interface of public address system and fire-fighting automation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |