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Exploring high resolution test pattern to improve the cache failure analysis / Ong Chein Ee

Exploring high resolution test pattern to improve the cache failure analysis_ Ong Chein Ee_E3_2017_MFAR
Biasanya, hanya asas lulus/gagal algoritma ujian digunakan untuk membuat ujian terhadap susunatur dalam pemproses. Tetapi, asas lulus/gagal algoritma ujian tidak dapat mengenal pasti lokasi kegagalan susunatur apabila digunakan dalam analisis kegagalan (AK) untuk mencari punca kegagalan. Resolusi corak algoritma ujian memainkan peranan yang penting dalam AK supaya dapat mengenal pasti setiap bit yang gagal dalam susunatur. Tesis ini membincangkan konsep untuk membuat corak ujian resolusi tinggi melalui Memory Build in Self-Test (MBIST). Cara penggunaan MBIST ialah dengan memasukkan elemen Capture Test Vector (CTV) dalam corak ujian untuk menambahbaik resolusi corak ujian. Pada masa yang sama, kepentingan corak ujian resolusi tinggi telah ditunjukkan dalam kes kajian yang sebenar. Corak ujian tersebut telah digunakan di dalam Automated Test Equipment (ATE) untuk melakukan ujian terhadap pemproses. Satu pemproses telah menjalani proses Focused Ion Beam (FIB) bagi memusnahkan memori bit dalam lokasi susunatur untuk membuktikan corak ujian tersebut dapat berfungsi dengan betul. Akhir sekali, corak ujian resolusi tinggi tersebut digunakan dalam kes sebenar sebagai bukti corak ujian tersebut mempunyai kebolehan untuk meningkatkan kecekapan AK. Teknik AK dan aplikasi corak ujian resolusi tinggi dalam proses susunatur memperbaiki telah dibentangkan dari peringkat pengujian sehingga perigkat pemusnahan AK. Keputusan kes ini telah membuktikan konsep yang dicadangkan untuk membolehkan corak ujian resolusi tinggi adalah berkesan dan dapat mempertingkatkan kecekapan AK dengan secara tidak langsung mempertingkatkan kadar kejayaan untuk menemui punca kegagalan. Typically, only pass/fail basis test algorithm is being used to test the cache array in silicon devices. But the pass/fail basis test algorithm is insufficient to identify the failing characteristic of the cache array when it comes to the failure analysis (FA) and debug stage to find out the root cause of the failing mechanism. The resolution of test algorithm plays an important role in helping FA process to identify every single failing bits in cache array. In this dissertation, the concept of bringing up the Memory Build in Self-Test (MBIST) high resolution test pattern is discussed. The utilization of MBIST engine by insertion of the Capture Test Vector (CTV) element into the test algorithm is the main concept in increasing the resolution test pattern. At the same time, the importance of high resolution test pattern in FA process is being shown in a real case study. The generated high resolution test pattern is integrated for Automated Test Equipment (ATE) usage so that the test pattern can be applied in real silicon device testing. Then, a silicon device is edited using Focused Ion Beam (FIB) to destroy the memory bits in cache array for proving the test pattern is functioning properly. Finally, the high resolution test pattern is being used in real case application for proving the high resolution test pattern have the capability in improving FA efficiency in identifying the failing bits. The FA technique and application of using high resolution test pattern in debugging the cache failure are shown from the testing stage until the destructive FA stage. The finding in real case FA proved the concept of bring up the MBIST high resolution test pattern is working properly. It is able to increase the effectiveness of failure analysis and failure isolation process which indirectly increase the success rate for finding the root cause
Contributor(s):
Ong, Chein Ee - Author
Primary Item Type:
Thesis
Language:
English
Subject Keywords:
Memory build in self-test (MBIST) ; Capture Test Vector (CTV) ; Focused ion beam (FIB)
Sponsor - Description:
Pusat Pengajian Kejuruteraan Elektrik & Elektronik -
First presented to the public:
8/1/2017
Original Publication Date:
3/30/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 110
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-03-30 10:01:09.78
Date Last Updated
2020-05-29 17:18:31.32
Submitter:
Mohd Fadli Abd. Rahman

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Exploring high resolution test pattern to improve the cache failure analysis / Ong Chein Ee1 2018-03-30 10:01:09.78