| Since Edison invented the electric light, people’s life because of electricity has undergone tremendous changes. In the modern society, the power is one of the most widely used energy for people, almost no people without access to electricity as energy equipment. Although the power greatly promoted the development of human society, to facilitate people’s life. But if handled improperly, will endanger the safety of human life。 Therefore a security needs in people’s lives, it is-leakage protector, the key component of leakage protector is leakage protection chip. So the research and design of leakage protection chip has become particularly important.With the development of the design of programmable microprocessor chip and integrated circuit manufacturing process, Feature size chip enters from the deep submicron to nanoscale. Microelectronic chip from large to very large scale integration, Integrated circuit system integration and complexity continues to increase test method for better, more effective to ensure the reliable operation of VLSI. The progress of advanced integrated circuit design and manufacturing technology makes the cycle of design and manufacture of VLSI is more and more short, low cost more and more:at the same time, IC test cost in the total cost of increasing the proportion of integrated circuit. At present, the cost of testing VLSI accounts for about35%of the total cost of the35%-55%chip, the testing time accounting for about half of the entire chip development cycle. The importance of integrated circuit testing is more and more prominent. In order to control the cost of the chip, has successively developed test method, the new general automatic test equipment (ATE), chip tester. This paper is to study the design of chip, and the special test instrument based on FM2148leakage protection mainly include: leakage protection principle, performance evaluation of leakage protector types, FM2148chip is introduced and its working principle, FM2148dedicated tester hardware dedicated tester FM2148scheme, software implementation, FM2148special testerFM2148dedicated tester uses MSP430F169as the main control MCU, test principle thesis contains FM2148specific parameters and realization method and function test, and introduces the implementation of FM2148tester software debugging analysis function and algorithm. Finally introduces the practical application of test instrument and the test data, the testing instrument has been put into mass production of the FM2148test, and achieved good results.FM2148leakage protection chip Shanghai Fudan Microelectronics group Limited by Share Ltd independent research and development, FM2148is the function of overload protection a high performance electric device chip protection. It not only has the A type and AC type leakage protection function, but also has the function of overload protection. |
