A 1.2GHz chip has scan chains of length 30,000 bits, 20,000 bits, 24,000 bits, 25,000 bits, and two of 12,000 bits. 500,000 test vectors are used for each scan chain. The tests are run at 50% of full speed.
What is the total test time?
Sol: 20.8 Secs
Interview Question - Scan Test
Written byMurugavel
Friday, October 26, 2007
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Murugavel
is a pioneering figure in the Global Semiconductor Blogging scene since 2004. A 24+ year Semicon Industry veteran, he has held various leadership positions at large product companies. He is currently the Product Director at an Automotive Semiconductor maker.
Murugavel earned his Master's degree in Electrical Engineering from Texas A&M University and his specialization was in Digital Signal Processing, and VLSI architectures for Digital Communications. He is very enthusiastic about AI, Automotive, Telecom, Industrial IoT, Smart Cities and other Future Technologies. This Blog has been his long time calling/passion and hobby where he writes about Technology.
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