CN103137209B - A kind of non-solder detects the system and method for paster RAM on road - Google Patents
A kind of non-solder detects the system and method for paster RAM on road Download PDFInfo
- Publication number
- CN103137209B CN103137209B CN201210593149.6A CN201210593149A CN103137209B CN 103137209 B CN103137209 B CN 103137209B CN 201210593149 A CN201210593149 A CN 201210593149A CN 103137209 B CN103137209 B CN 103137209B
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- ram
- interface
- circuit board
- tap
- type multi
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Abstract
Non-solder detects a system of paster RAM on road, comprise testing circuit board and the PC that testing software is housed, testing circuit board is connected with PC; Described testing circuit board comprises test circuit and pcb board, and test circuit is on PCB; Described test circuit comprises: power supply, single-chip microcomputer, RS232 communication chip and RS232 interface; Described pcb board is also provided with the surface subsides contact corresponding with tested RAM pin, this surface is pasted contact and is connected to the corresponding data I/O pin of single-chip microcomputer by track; Also comprise bayonet type multi-tap, this bayonet type multi-tap is fixed on surface corresponding to tested RAM pin and pastes contact position.The method of this systems axiol-ogy paster RAM is first connected with the RS232/USB interface of PC by RS232/USB interface by testing circuit board; Again paster RAM to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to RAM with PC, and judged result is directly shown.
Description
One, technical field
The present invention is for a kind of non-solder involved by integrated circuit detection field is at the system and method for road detection paster RAM.
Two, background technology
Conventional integrated circuit quality determining method is divided at present: Bu road is detected and detected on road.
Bu road detect refer to: at a glance encapsulation mark whether clear, writing trade mark and factory number whether various; Whether two inspection pins are smooth glossy, corrosion-free plug vestige; Three measure between VDD and GND of integrated circuit whether have diode effect with multimeter.
Detect on road and refer to: have a set of ripe circuit, with Shift Method, to-be-measured integrated circuit is welded in circuit, judge its performance quality.
There is following defect in above two kinds of methods: one, criterion is bad defines.Two, contact with pin and badly affect measurement result.Three, the bad existence of non-skid feature makes the risk of integrated circuit short circuit, damage device.Four, surface-mounted device welding trouble, not quick detachable.
Three, summary of the invention
For the defect of integrated circuit quality determining method in prior art, the present invention proposes a kind of without the need to welding surface-mounted device to be measured, the method that You Ke road is detected, and the method can the quality of intuitive judgment integrated circuit.
The present invention seeks to: solve the problem that paster RAM device can only be welded on fragile device in the limitation and unloading process detected in ripe circuit.
Technical solution of the present invention is as follows:
Non-solder detects a system of paster RAM on road, comprise testing circuit board and the PC that testing software is housed, testing circuit board is connected with PC;
Described testing circuit board comprises test circuit and pcb board, and test circuit is on PCB; Described test circuit comprises: power supply, single-chip microcomputer, RS232 communication chip and RS232 interface; Single-chip microcomputer connects RS232 interface by RS232 communication chip; RS232 interface on described PC is by the RS232 interface on cable connecting test circuit board;
Described pcb board is also provided with the surface subsides contact corresponding with tested RAM pin, this surface is pasted contact and is connected to the corresponding data I/O pin of single-chip microcomputer by track;
Also comprise bayonet type multi-tap, this bayonet type multi-tap is fixed on surface corresponding to tested RAM pin and pastes contact position, and when tested RAM is contained on bayonet type multi-tap, contact is pasted on pin and the described surface of tested RAM.
Described test circuit also comprises USB interface and USB conversion chip; Described USB interface connects RS232 communication chip by USB conversion chip.
Said system detects the method for paster RAM, is first be connected with the RS232 interface of PC by RS232 interface by testing circuit board; Again paster RAM to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to RAM with PC, and judged result is directly shown.
Or, be first testing circuit board is connected with the USB interface of PC by USB interface; Again paster RAM to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to RAM with PC, and judged result is directly shown.
Present invention utilizes programmable device and commonly use accessory bayonet type multi-tap, making non-solder detect surface-mounted device on road becomes possibility.
Four, accompanying drawing explanation
Fig. 1 is the technical program hardware principle schematic diagram,
Fig. 2 is the technical program software flow schematic diagram,
Five, embodiment
Below in conjunction with accompanying drawing and embodiment, the technical program is further illustrated as follows (in this example, being measured as the RAM of IS62C256AL model):
Non-solder detects a system of paster RAM on road, comprise testing circuit board and the PC that testing software is housed, testing circuit board is connected with PC;
Described testing circuit board comprises test circuit and pcb board, and test circuit is on PCB; Described test circuit comprises: power supply, single-chip microcomputer, RS232 communication chip and RS232 interface; Single-chip microcomputer connects RS232 interface by RS232 communication chip; RS232 interface on described PC is by the RS232 interface on cable connecting test circuit board;
Described pcb board is also provided with the surface subsides contact corresponding with IS62C256AL pin, this surface is pasted contact and is connected to the corresponding data I/O pin of single-chip microcomputer by track;
Also comprise bayonet type multi-tap, this bayonet type multi-tap is fixed on surface corresponding to IS62C256AL pin and pastes contact position, and when IS62C256AL is contained on bayonet type multi-tap, contact is pasted on pin and the described surface of IS62C256AL.
Described test circuit also comprises USB interface and USB conversion chip; Described USB interface connects RS232 communication chip by USB conversion chip.
Said system detects the method for paster RAM, is first be connected with the RS232 interface of PC by RS232 interface by testing circuit board; Again IS62C256AL to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to IS62C256AL with PC, and judged result is directly shown.
Or, be first testing circuit board is connected with the USB interface of PC by USB interface; Again IS62C256AL to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to IS62C256AL with PC, and judged result is directly shown.
In the technical program, PC end testing software, adopts the thinking of flow process instruction shown in Fig. 2 to write.
Claims (1)
1. non-solder detects a system of paster RAM on road, and it is characterized in that the PC comprising testing circuit board He testing software is housed, testing circuit board is connected with PC;
Described testing circuit board comprises test circuit and pcb board, and test circuit is on PCB; Described test circuit comprises: power supply, single-chip microcomputer, RS232 communication chip and RS232 interface; Single-chip microcomputer connects RS232 interface by RS232 communication chip; RS232 interface on described PC is by the RS232 interface on cable connecting test circuit board;
Described pcb board is also provided with the surface subsides contact corresponding with tested RAM pin, this surface is pasted contact and is connected to the corresponding data I/O pin of single-chip microcomputer by track;
Also comprise bayonet type multi-tap, this bayonet type multi-tap is fixed on surface corresponding to tested RAM pin and pastes contact position, and when tested RAM is contained on bayonet type multi-tap, contact is pasted on pin and the described surface of tested RAM;
Described test circuit also comprises USB interface and USB conversion chip; Described USB interface connects RS232 communication chip by USB conversion chip;
First testing circuit board is connected with PC by RS232 interface or USB interface; Again paster RAM to be measured is put into bayonet type multi-tap; Finally hold testing software to read and write operation and comparative result to RAM with PC, and judged result is directly shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593149.6A CN103137209B (en) | 2012-12-31 | 2012-12-31 | A kind of non-solder detects the system and method for paster RAM on road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210593149.6A CN103137209B (en) | 2012-12-31 | 2012-12-31 | A kind of non-solder detects the system and method for paster RAM on road |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103137209A CN103137209A (en) | 2013-06-05 |
| CN103137209B true CN103137209B (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210593149.6A Expired - Fee Related CN103137209B (en) | 2012-12-31 | 2012-12-31 | A kind of non-solder detects the system and method for paster RAM on road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103137209B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627491A (en) * | 2020-06-03 | 2020-09-04 | 恒银金融科技股份有限公司 | Flash memory testing module based on USB3.0 and testing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060535A (en) * | 1985-07-29 | 1992-04-22 | 约翰弗兰克制造公司 | Area of computer aided fault isolation in the circuit board testing |
| CN2671026Y (en) * | 2003-09-23 | 2005-01-12 | 南京师范大学 | Embedded observer and control system developing platform |
| CN101251801A (en) * | 2007-09-21 | 2008-08-27 | 深圳职业技术学院 | Microprocessor general-purpose development system |
-
2012
- 2012-12-31 CN CN201210593149.6A patent/CN103137209B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060535A (en) * | 1985-07-29 | 1992-04-22 | 约翰弗兰克制造公司 | Area of computer aided fault isolation in the circuit board testing |
| CN2671026Y (en) * | 2003-09-23 | 2005-01-12 | 南京师范大学 | Embedded observer and control system developing platform |
| CN101251801A (en) * | 2007-09-21 | 2008-08-27 | 深圳职业技术学院 | Microprocessor general-purpose development system |
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| Publication number | Publication date |
|---|---|
| CN103137209A (en) | 2013-06-05 |
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Granted publication date: 20151125 Termination date: 20201231 |