Electric fuse burning operation method and burning device

An electric fuse, reburning technology, applied in the field of memory, can solve the problems of occupying time, the time difference is very large, affecting the programming efficiency, etc., to achieve the effect of shortening the burning operation time

Active Publication Date: 2013-07-31
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, the problem is that due to the different process distributions of different Efuses, the time of burning operation is very different. In order to ensure the reliability of burning operation, the time of burning operation is usually selected to meet the worst Efuse unit, so as to ensure that the electric fuse can be Fuse completely, in this way, the process of burning operation will take up a lot of time, which seriously affects the programming efficiency

Method used

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  • Electric fuse burning operation method and burning device
  • Electric fuse burning operation method and burning device
  • Electric fuse burning operation method and burning device

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Embodiment Construction

[0038] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0040] Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the sectional view showing the structure of the device will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present in...

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Abstract

The invention provides an electric fuse burning operation method and a burning device. The method comprises the following steps of: shifting programming data in CLK (clock) low potential; judging whether a current electric fuse is needed to be burned or not to write the programming data; if so, performing the burning operation on the electric fuse in CLK high potential; verifying whether the electric fuse subjected to the burning operation is needed to be re-burned or not; and if so, performing the burning operation again on the electric fuse. The electric fuse burning operation method and the burning device can avoid spending more time on the electric fuse burning operation so as to improve programming efficiency.

Description

technical field [0001] The invention relates to the technical field of memory, in particular to a method and a programming device for electric fuse fusing operation. Background technique [0002] A one-time programmable (One Time Programmable, OTP) device refers to a one-time programmable memory with an internal program memory. The writing principle of the OTP device is similar to that of EPROM. When programming, the high voltage of the burning tool can be used to write the application code. The program memory and code option area of ​​standard OTP products are all empty, and the user can burn the application program code into the chip, and it can work normally according to the user's function, which provides great convenience and convenience for the user's development verification and mass production. flexibility. However, in order to save costs, the chip after programming and writing no longer provides erasing or rewriting functions. [0003] Unlike FALSH devices, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C17/18
Inventor 杨光军
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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