dft engineer

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