Test Integration for SOC Supporting Very Low-Cost Testers

To reduce test cost for SOC products, it is important to reduce the cost of testers. When using low-cost testers which have a limited test bandwidth to perform testing, built-in- self-test (BIST) is necessary to reduce the data volume to be transmitted between the tester and the device-under-test (DUT). We enhance the SOC test integration tool, STEAC, so that it can support SOCs containing BISTed cores which are to be tested by low-cost testers. A test chip is implemented to verify the proposed technique. Experimental results show that the enhanced STEAC successfully works with the HOY wireless test system and other low-cost testers.