Method for protecting static electricity for multi-purpose chip
An electrostatic protection, multi-purpose technology, applied in emergency protection circuit devices, emergency protection circuit devices, circuits, etc. for limiting overcurrent/overvoltage, can solve the problems of increasing chip area, increasing static leakage, etc. The effect of large chip area, reducing leakage and improving current protection capability
Active Publication Date: 2015-04-01
VERISILICON MICROELECTRONICS SHANGHAI +3
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Problems solved by technology
In order to meet the electrostatic protection requirements of the system, more electrostatic protection circuits need to be added, but adding more electrostatic protection circuits not only increases the chip area, but also increases the static leakage
Method used
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[0040] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0041] see Figure 1 to Figure 5 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...
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The invention provides a method for protecting static electricity for a multi-purpose chip. The method comprises the following steps: distributing idle I / Os (Input / Output) to various encapsulated effective I / Os, setting each idle I / O as a tri-state I / O by a system, and encapsulating the tri-state I / Os with the effective I / Os to improve the electrostatic protection capability of the effective I / Os, wherein each effective I / O comprises an effective I / O pin, an effective power pin and an effective ground pin. According to the method for protecting the static electricity for the multi-purpose chip, the idle I / Os in the multi-purpose chip are effectively utilized, specifically, the idle I / O are set as electrostatic protection circuits to be encapsulated with the effective I / Os, so that the current protection capability of the chip is improved, electric leakage is reduced and the area of the chip is not increased.
Description
technical field [0001] The invention relates to the field of integrated circuit design, in particular to an electrostatic protection method for a multipurpose chip. Background technique [0002] Electrostatic Discharge (ESD) protection is very important for integrated circuits, and many studies have been conducted in the field of integrated circuit design. Electrostatic discharge may occur no matter in the normal use, transportation and storage of electronic equipment, or in the process of producing and assembling various integrated circuit components. These electrostatic discharges, which are difficult to predict and prevent correctly, will damage integrated circuits, generate defective rates, and even cause serious losses. Special attention is paid to the design of electrostatic discharge protection circuits in the current design and manufacture of integrated circuits. The electrostatic discharge protection circuit is usually connected to the pin and connected in paralle...
Claims
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IPC IPC(8): H01L27/02H02H9/04
Inventor 费伟斌肖艳周柏毓邹峰
Owner VERISILICON MICROELECTRONICS SHANGHAI