Memory hard macro partition optimization for testing embedded memories
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United States of America Patent
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May 10, 2016
Grant Date -
Mar 28, 2013
app pub date -
Sep 23, 2011
filing date -
Sep 23, 2011
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Abstract
A memory hard macro designed to support multiple design for test (DFT) techniques having signal paths associated with the DFT techniques and the functional operation of the memory instance that share logic devices or components. The memory hard macro includes a functional input port and a functional output port, forming a functional memory data path, which includes input latches from the memory instance. The memory hard macro also includes a scan input port and a scan output port, forming a scan data path, which includes input latches from the array of data buffer circuits and output latches from the array of sense amplifiers. The memory hard macro further includes a BIST input port and a BIST output port, forming a BIST data path, which includes at least one input latch from the array of data buffer circuits and at least one output latch from the array of sense amplifiers.
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