CN204087194U - A kind of AVR single chip emulator - Google Patents
A kind of AVR single chip emulator Download PDFInfo
- Publication number
- CN204087194U CN204087194U CN201420151219.7U CN201420151219U CN204087194U CN 204087194 U CN204087194 U CN 204087194U CN 201420151219 U CN201420151219 U CN 201420151219U CN 204087194 U CN204087194 U CN 204087194U
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- CN
- China
- Prior art keywords
- chip microcomputer
- emulator
- chip
- serial communication
- communication module
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- 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.)
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Abstract
The utility model discloses a kind of AVR single chip emulator, comprising: single-chip microcomputer, serial communication module, indicating circuit, 10 pin jtag interface and supply modules.Described single-chip microcomputer is used for test target single-chip microcomputer, described serial communication module is used to refer to the running status of emulator for single-chip microcomputer and the data communication of computing machine, described indicating circuit, described 10 pin jtag interfaces are used for linking objective single-chip microcomputer, and described supply module is used for as emulator provides working power.Single-chip microcomputer carries out data communication by serial communication module and computing machine, can according to computing machine at sequence of threads, test emulation is carried out to the target AVR single chip be connected on emulator 10 pin jtag interface.The utility model can carry out emulation testing to AVR series monolithic on the market, and circuit is simple, with low cost, reliable.
Description
Technical field
The utility model relates to the communication technology and singlechip technology field, particularly a kind of AVR single chip emulator.
Background technology
The single-chip microcomputer of AVR is extensively applied to the every field such as computer peripheral, industrial time controlling, instrument and meter, communication apparatus, household electrical appliance, on stream, AVR single chip emulator compares other developing instruments, there is the advantage of on-line debugging program, programmer can be facilitated to find out leak in program, shorten the construction cycle.But in recent years, the emulator circuit that AVR single chip producer provides is complicated, easily breaks down, and expensive, adds system development costs.
Utility model content
In order to solve the problem, the utility model provides a kind of AVR single chip emulator.
The technical solution adopted in the utility model is: a kind of AVR single chip emulator, comprise single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4), supply module (5), described single-chip microcomputer is used for test target single-chip microcomputer, described serial communication module is used to refer to the running status of emulator for single-chip microcomputer and the data communication of computing machine, described indicating circuit, described 10 pin jtag interfaces are used for linking objective single-chip microcomputer, and described supply module is used for as emulator provides working power.Serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4) are connected with single-chip microcomputer (1), single-chip microcomputer (1) controls serial communication module (2), indicating circuit (3) and 10 pin jtag interfaces (4), described supply module (5) is connected, for emulator systems provides operating voltage with single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4).
Compared with prior art, the utility model has the advantage of: designed AVR single chip emulator have employed simpler operating circuit, enhance the reliability of circuit working, extend the time between failures of emulator, thus reduce the cost of development of system, shorten the development time of programmer.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model circuit theory diagrams;
In figure, 1 be single-chip microcomputer, 2 be serial communication module, 3 for indicating circuit, 4 be that 10 pin jtag interfaces, 5 are for supply module.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.The utility model is only the description to the utility model embodiment, does not have any restriction to scope of the present utility model.
Embodiment 1
As shown in Figure 2, a kind of AVR single chip emulator, comprises single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4), supply module (5).Serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4) are connected with single-chip microcomputer (1), supply module (5) is connected, for emulator systems provides operating voltage with single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4).
In this embodiment, single-chip microcomputer (1) adopts ATmega169-8AI chip (U1), and outside adjunct circuit comprises: oscillatory circuit and reset circuit, and crystal oscillator frequency is 7.3728MHz.Single-chip microcomputer is by 5V Power supply, resetting pin (Pin9) is pulled to noble potential by R1 resistance, external interrupt 1 pin (Pin17) pulls down to electronegative potential by R2, internal oscillator amplifier input pin Pin12 and internal oscillator amplifier output pin Pin13 is connected respectively to the two ends of crystal oscillator, power pins (Pin10), internal reference voltage pin (Pin32), the positive pin of analog power (Pin30) and A/D switched pins (Pin38) are connected on single-chip microcomputer power supply, power supply ground pin (Pin11), power supply is received on the ground in analog electrical seedbed pin (Pin31).
In this example, serial communication module (2) adopts MAX232ACPE chip (U2), 5V is adopted to power, between Pin1 and Pin3, between Pin4 and Pin5, Pin16 and Pin2, Pin6 and Pin15, connect the ceramic disc capacitor of a 0.1uF respectively, T2OUT pin (Pin7) is connected on the Pin2 of DB9 interface (J2), R2IN pin (PIN8) is connected on the Pin3 of DB9 interface (J2), and the Pin5 of DB9 interface J2 receives the power supply of emulator systems on the ground.
In this example, indicating circuit (3) adopts highlighted green LED (D1) as power light, adopt red LED (D2) as emulator run indicator, the positive pole of D1 and D2 is received on 5V power supply, D1 negative pole is connected to power supply on the ground by current-limiting resistance R3 (resistance 1k), and D2 negative pole is connected on the Pin4 pin of single-chip microcomputer (1) ATmega169-8AI chip (U1) by current-limiting resistance R4 (resistance 1k).
In this example, 10 pin jtag interfaces (4) adopt 10 pin ox horn seats (J1), Pin1 receive be connected to single-chip microcomputer (1) ATmega169-8AI chip (U1) Pin8 pin on, Pin3 receive be connected to single-chip microcomputer (1) ATmega169-8AI chip (U1) Pin7 pin on, Pin5 receive be connected to single-chip microcomputer (1) ATmega169-8AI chip (U1) Pin2 pin on, Pin9 receive be connected to single-chip microcomputer (1) ATmega169-8AI chip (U1) Pin6 pin on, Pin7 and Pin4 is connected to power supply and just goes up, Pin2 and Pin10 is connected to power supply on the ground.
In this example, supply module (5) adopts MC33064P chip (U3), power input pin (Pin2) connects external input power, input voltage range is 5V ~ 6.5V, power supply ground (Pin3) receives the ground of emulator systems, and 5V power supply output pin (Pin1) is received on system 5V power supply.
Claims (5)
1. an AVR single chip emulator, comprise single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4), supply module (5), described serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4) are connected with single-chip microcomputer (1), described supply module (5) is connected, for emulator systems provides operating voltage with single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4).
2. a kind of AVR single chip emulator according to claim 1, is characterized in that: described single-chip microcomputer (1) controls serial communication module (2), indicating circuit (3) and 10 pin jtag interfaces (4).
3. a kind of AVR single chip emulator according to claim 1, is characterized in that: described serial communication module (2) receives the order from computing machine, and single-chip microcomputer test result is issued computing machine.
4. a kind of AVR single chip emulator according to claim 1, is characterized in that: the LED light that described indicating circuit (3) is different colours.
5. a kind of AVR single chip emulator according to claim 1, is characterized in that: described supply module (5) is connected with single-chip microcomputer (1), serial communication module (2), indicating circuit (3), 10 pin jtag interfaces (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151219.7U CN204087194U (en) | 2014-03-28 | 2014-03-28 | A kind of AVR single chip emulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420151219.7U CN204087194U (en) | 2014-03-28 | 2014-03-28 | A kind of AVR single chip emulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087194U true CN204087194U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420151219.7U Expired - Fee Related CN204087194U (en) | 2014-03-28 | 2014-03-28 | A kind of AVR single chip emulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590525A (en) * | 2016-02-24 | 2016-05-18 | 成都极地科技有限公司 | Simulation training radio station |
-
2014
- 2014-03-28 CN CN201420151219.7U patent/CN204087194U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590525A (en) * | 2016-02-24 | 2016-05-18 | 成都极地科技有限公司 | Simulation training radio station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150328 |
|
| EXPY | Termination of patent right or utility model |