dft engineer

1 week ago

Irvine, United States Ethan Alexander Group Full time
Job DescriptionJob Description

DFT Engineer


Responsibilities

  • Define & document DFT requirements/Specifications for IP/Block and Chip level
  • Execute DFT Lint to identify scan DRC violations and resolution
  • Top level and hard macro block level scan insertion with high EDT compression ratio (Hybrid LBIST, EDT IP/ATPG, LPCT EDT, AC scan verification with high speed PLL, MBIST, and IJTAG)
  • Plan and Insert MBIST and memory repair (BISR) at RTL
  • Generate and port IJTAG ICL/PDL and STIL patterns for MBIST, ATPG, and JTAG tests
  • ATPG pattern verification on pre/post-route gate-level netlist including 0-delay and SDF
  • Work with backend team for the MBIST/Scan mode constraints generation, scan reorder, VCDs for IR drop analysis during DFT, ECO changes and formal verification (LEC), and timing closure
  • Support test engineer for pattern generation, tester debug and failure analysis.
  • Work with Test Engineering team during Silicon bring-up and creating flow/scripts necessary for debugging/diagnosing compression LPC ATPG patterns (stuck-at/at speed), MBIST patterns on ATE for development and production programs
  • Expert knowledge of Mentor Tessent toolchain

Job Requirements

  • Hands-on hierarchical DFT flow experience from RTL to netlist
  • Strong knowledge and experience with both JTAG (IEEE1149.1) and IJTAG (1687)
  • Experience in inserting EDT, wrapper cells and OCC
  • Experience in analyzing DFT DRC violations and fault coverage analysis
  • Expertise in ATPG. Debug and resolve ATPG DRC and chain trace issues
  • Gate level simulations and debug; both 0-delay and with SDF DFT
  • Expertise in using Cadence for scan stitching and Mentor Tessent tool suite for DFT implementation
  • Experience in debugging tester/ATE failures, silicon bring-up and yield and test time improvement
  • Experience in Perl/TCL scripting and good verbal/written communication skills
  • 7+ years of proven DFT execution experience on mixed-signal SoC with first-pass silicon success


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