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Method and circuit for setting and reading unique identification code of chip on silicon wafer in batch

An identification code and chip technology, applied in the field of chip programming, can solve the problems of increasing cost, trouble, and incompatibility with standard processes, and achieve the effects of extending life, reducing costs, and reducing deformation and wear.

Inactive Publication Date: 2010-06-23
SICHUAN KILOWAY ELECTRONICS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is also cumbersome to operate in terms of technology. Due to the insertion and modification of the mask process, it cannot be compatible with standard processes and increases the cost.

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  • Method and circuit for setting and reading unique identification code of chip on silicon wafer in batch
  • Method and circuit for setting and reading unique identification code of chip on silicon wafer in batch
  • Method and circuit for setting and reading unique identification code of chip on silicon wafer in batch

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Embodiment Construction

[0036] Observing the arrangement of the UID coded bit string within a certain range, it can be found that: in the UID coded bit string with m bits long and k continuous, the highest bit is defined as the k-1 bit and the lowest bit is the 0th bit. n, first obtain N by finding the logarithm of m with base 2 as N, N=Log(2)m, when N is an integer, n=N, when N is a decimal, n is rounded up to N, n= floor(N), at this time, taking the nth bit as the boundary, in the m unique identification code coded bit strings, the nth bit to the m-1th bit are the same, and the 0th bit to the n-1th bit It changes in increasing or decreasing order. In the coded bit string that defines the unique identification code, the 0th bit to the n-1th bit is the Low End Bit String (LBS), and the nth bit to the m-1th bit is the high-end bit string ( High End Bit String, referred to as HBS).

[0037] Such as image 3 As shown, a string of 128-bit unique identification codes, the lowest bit is the 0th bit, and the...

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Abstract

The invention discloses a method for setting unique identification code of chip on silicon wafer in batch which includes the steps: dividing the chip on the silicon wafer into a plurality of blocks; dividing the bit of the chips into LBS and HBS according to the quantity of chip in one block, setting LBS by taking the chips as unit and uniformly setting the numerical value of HBS of the chips in the blocks by taking blocks as unit; and setting the unique identification code. The invention also discloses a method for reading the unique identification code to respectively read the LBS and HBS of the unique identification code and combine the two into a complete unique identification code, or directly read the unique identification code when the HBS and LBS of the unique identification code in the chip are neighboring and ordered. The hardware structure of the invention divides one silicon wafer into a plurality of blocks; each chip in each block shares programmable interconnection, input / output solder pad, probe card and programmable equipment channel. The invention can improve high programming speed, reduce cost and improve yield by setting high-end bit string in the chips.

Description

Technical field [0001] The present invention relates to the technical field of chip programming, in particular to a method for setting chip unique identification codes in batches on a silicon chip, a method for reading the above-mentioned chip unique identification codes, and to realize the above-mentioned batch reading and writing of chip unique identification codes on a silicon chip Circuit. Background technique [0002] In current applications, many chips need to include chip identification codes, so it is often necessary to write identification codes in the chip. However, writing chip identification codes in the prior art requires setting the chips one by one, and the process is very cumbersome and takes up a lot of programming time. [0003] In the radio frequency identification technology, the technology of setting the chip identification code is especially needed. Radio Frequency Identification (RFID) technology is a technology for identifying and managing each RFID chip b...

Claims

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Application Information

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IPC IPC(8): G06K19/07H01L21/00
Inventor 毛军华彭泽忠刘敬术
Owner SICHUAN KILOWAY ELECTRONICS
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