Micro-Code BIST

Conclusions

A micro-code programmable BIST is the most flexible of self-test structures. The memory test patterns can easily be modified based on new fault modeling or to assist in the characterization of a new memory design. A micro-code BIST needs to be tailored to the memory design being tested and therefore a wide variety of micro-code instruction word styles exist. Many unique patterns and DFT features can be programmed with a microcoded memory BIST; some of those items include pause delay duration for retention testing or the number of times a given loop is executed. Each of these features enables a micro-code BIST to be highly flexible to support very challenging memory testing.

“...if ye keep in memory what I preached unto you ...”