ATPG Engineer

Project

Work done for a product or program.

• Generate stuck-at, transition delay, path delay, cell-aware and IDDQ pattern sets using Tessent TestKompress, TetraMAX or Modus.
• Close coverage gaps by analysing undetected and ATPG-untestable faults and driving netlist or constraint fixes with the DFT and design teams.
• Apply low-power ATPG constraints, switching-activity limits and staggered clocking to keep shift and capture power within IR-drop limits.
• Run timing-aware and small-delay-defect ATPG using SDF back-annotation to catch marginal delay defects that slip past transition patterns.
• Simulate generated patterns at gate level with SDF to prove zero mismatches before pattern release to the test floor.
• Convert and release patterns in STIL, WGL and tester-native formats with correct timing setups, pin maps and protocol sections.
• Optimise pattern count and pattern volume through compression tuning, pattern reordering and top-up pattern strategies.
• Support silicon debug by generating targeted diagnostic patterns and reduced pattern sets for failing devices.
• Maintain regression pipelines that regenerate and re-validate the full pattern suite after every netlist or ECO change.

Function

Work that keeps the discipline running: methods, tools, suppliers and people.

• Build and validate ATPG models for the design, including library models, black boxes and memory bypass models.

Project

1. Produce and hand over the role's key deliverables
   • Released pattern sets in STIL / WGL / tester-native format
   • Fault coverage and test coverage summary reports per fault model
   • Gate-level pattern simulation logs showing zero mismatches
   • ATPG-untestable fault analysis and coverage gap report
   • Pattern count, test time and tester memory utilisation summary
2. Develop the test solutionGeneral
   • Define the test plan and coverage targets
   • Write and debug the test program
   • Design or specify the test hardware
3. Release to productionGeneral
   • Correlate results across testers and sites
   • Optimise test time
   • Release the program under change control

Function

1. Maintain test infrastructureGeneral
   • Keep program libraries and standards current
   • Plan tester and hardware capacity
2. Improve methodsGeneral
   • Review escapes and adjust coverage
   • Develop data analysis tools