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Ninth Asian Test Symposium (ATS'00)
BIST TPG for SRAM cluster interconnect testing at board level
Taipei, Taiwan
December 04-December 06
ISBN: 0-7695-0887-1
Chen-Huan Chiang, Lucent Technols., Princeton, NJ, USA
S.K. Gupta, Lucent Technols., Princeton, NJ, USA
A Built-In Self-Test (BIST) methodology and a test pattern generation (TPG) architecture for testing static random access memory (SRAM) interconnect at board level via IEEE 1149.1 Boundary Scan (BS) Architecture are presented. Due to the expense and complexity of BS circuitry the widely-used SRAMs on most modern telecommunication circuit boards seldom contain BS architecture. (We call such non-boundary scan ICs cluster-ICs.) Hence, a methodology that tests the large numbers of board-level interconnects at the control, address, and data lines of cluster SRAMs is necessary. This is especially essential for board-level interconnect BIST which is used not only for manufacturing testing but also for system testing after integration. Newly identified prohibited conditions, which enable re-arrangement and merger of tests, are incorporated into test conditions for SRAM cluster interconnects. These improvements have been exploited to develop an efficient test procedure that is suitable for BIST. The proposed BIST methodology generates TPGs that (i) guarantee the avoidance of multi-driver conflicts when testing via BSA, (ii) guarantee the detection of all testable SRAM cluster interconnect faults, (iii) have low area overhead, and (iv) have short test lengths.
Index Terms:
built-in self test; SRAM chips; logic testing; printed circuit testing; automatic test pattern generation; integrated circuit interconnections; boundary scan testing; SRAM cluster interconnect testing; BIST TPG; test pattern generation; static random access memory; board-level interconnects; test pattern generation architecture; IEEE 1149.1 boundary scan architecture; prohibited conditions; testable SRAM cluster interconnect fault detection
Citation:
Chen-Huan Chiang, S.K. Gupta, "BIST TPG for SRAM cluster interconnect testing at board level," ats, pp.58, Ninth Asian Test Symposium (ATS'00), 2000
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