Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Patent
1988-03-17
1989-10-31
Miska, Vit W.
Horology: time measuring systems or devices
Time interval
Electrical or electromechanical
324 73AT, 371 221, G04F 800, G01R 1512, G06F 1114
Patent
active
048782092
ABSTRACT:
An apparatus and method for testing an access time of a macro embedded in a LSI chip. The apparatus includes a logical gate connected to the output latches of the macro, thereby controlling the access time of the macro, and a test latch for determining an on-chip delay time between a test signal for enabling the output latches and an input signal for enabling the macro. The method includes the steps of determining the on-chip delay time between the test signal and the input signal, thereby allowing the test signal to be synchronized with the input signal, supplying the synchronized test signal to the output latches for a manufacturer specified macro access time, and testing the latched output data from the macro.
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Bassett Robert W.
Griffin William R.
Murphy Susan A.
Petrovick, Jr. John G.
Varner James R.
International Business Machines - Corporation
Miska Vit W.
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