Test and Diagnosis of Hard-to-Detect Faults in FinFET SRAMs

The Fin Field-Effect Transistor (FinFET) technology became the most promising approach to enable the downscaling of technological nodes below the 20 nm threshold. However, the introduction of new technology nodes for embedded memories such as SRAMs, especially for even smaller nodes such as 10 and 5 nm, gives rise to new manufacturing failure...

Detecting Random Read Faults to Reduce Test Escapes in FinFET SRAMs

Manufacturing defects in FinFET SRAMs can cause hard-to-detect faults such as Random Read Faults (RRFs). Detection of RRFs is not trivial, as they may not lead to incorrect outputs. Undetected RRFs become test escapes, which might lead to no-trouble-found devices and early in-field failures. Therefore, the detection of RRFs is of utmost...

Improving the Detection of Undefined State Faults in FinFET SRAMs

Manufacturing defects in FinFET SRAMs can cause hard-to-detect faults such as Undefined State Faults (USFs). Detection of USFs is not trivial, as they may not lead to incorrect functionality. Nevertheless, undetected USFs may have a severe impact on the memory's quality: they can cause random read outputs, which might lead to test escapes and no...

A DFT Scheme to Improve Coverage of Hard-to-Detect Faults in FinFET SRAMs

Manufacturing defects can cause faults in FinFET SRAMs. Of them, easy-to-detect (ETD) faults always cause incorrect behavior, and therefore are easily detected by applying sequences of write and read operations. However, hard-to-detect (HTD) faults may not cause incorrect behavior, only parametric deviations. Detection of these faults is of...