摘要:
A method to reduce logic built in self test manufacturing test time of integrated circuits, comprising: loading a plurality of test seeds in bulk into a locally accessible on-chip memory array locally disposed on an integrated circuit, each of the plurality of test seeds is associated with a set of LBIST control information; sending the plurality of test seeds from the locally accessible on-chip memory array repetitively into a pseudo-random pattern generator one at a time during an LBIST operation being under the control from the set of LBIST control information; generating random bit streams serially into a plurality of parallel shift registers of the integrated circuit through the use of the plurality of test seeds; and performing a logic built-in self test on a plurality of logic blocks in the integrated circuit to detect defects within the integrated circuit.
摘要:
The disclosure relates to the making of the source and drain access regions of a field-effect transistor, these two regions being differentiated. The control region is defined by means of a three-layer mask of metal, resin and metal. A resin mask protects the drain access region, thus enabling the implantation of the source access region. After the dissolving of the resins, the drain access region is implanted.