Programmable device and method of testing programmable device
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United States of America Patent
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Nov 20, 1990
Grant Date -
N/A
app pub date -
Jul 19, 1988
filing date -
Jul 21, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A programmable device has a cell formation region having rows and columns of programmable cells arranged in a matrix arrangement, a real cell region within the cell formation region and constituted by the programmable cells which are to be actually programmed, a test bit region within the cell formation region and including a number of rows of the programmable cells so as to include all kinds of the programmable cells within the real cell region, and a test word region within the cell formation region and including a number of columns of the programmable cells so as to include all kinds of the programmable cells within the real cell region. All of the programmable cells within the real cell region can essentially be tested by testing the programmable cells within the test bit region and the test word region.
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