Scheduling Tests for Stacked 3D Chips under Power Constraints
Author
Summary, in English
This paper addresses test application time (TAT)
reduction for core-based stacked 3D chips. In contrast to the
traditional method of testing non-stacked chips where the same
test schedule is applied both at wafer test and at final test, stacked
3D chips need a pre-bond test schedule for each individual chip
and a different post-bond test schedule where all chips are jointly
tested. We consider a system of core-based chips where each core
is tested with a dedicated Built-In Self-Test (BIST) engine and
define an algorithm that defines each pre-bond test schedule and
the post-bond test schedule such that the overall TAT is
minimized and power constraints are met. The cost due to the
number of BIST control-lines is also taken into account.
Experiments with the proposed algorithm show significant savings
in TAT.
reduction for core-based stacked 3D chips. In contrast to the
traditional method of testing non-stacked chips where the same
test schedule is applied both at wafer test and at final test, stacked
3D chips need a pre-bond test schedule for each individual chip
and a different post-bond test schedule where all chips are jointly
tested. We consider a system of core-based chips where each core
is tested with a dedicated Built-In Self-Test (BIST) engine and
define an algorithm that defines each pre-bond test schedule and
the post-bond test schedule such that the overall TAT is
minimized and power constraints are met. The cost due to the
number of BIST control-lines is also taken into account.
Experiments with the proposed algorithm show significant savings
in TAT.
Publishing year
2010
Language
English
Full text
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Document type
Conference paper
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Keywords
- Built in Self Test (BIST)
- Design for Test (DfT)
- Test scheduling
- Sessions
- Test time
- Test cost
- 3D Stacked Integrated Circuit (SIC)
- Through Silicon Via (TSV).
Conference name
Swedish SoC Conference 2010
Conference date
2010-05-03 - 2010-05-04
Conference place
Kolmården, Sweden
Status
Published
Research group
- Digital ASIC