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公开(公告)号:CA1048645A
公开(公告)日:1979-02-13
申请号:CA225123
申请日:1975-04-17
Applicant: IBM
Inventor: CHU WILLIAM M , SONODA GEORGE
IPC: G11C11/413 , G06F11/22 , G11C11/412 , G11C29/00 , G11C29/04 , G11C29/14 , G11C29/50 , G11C29/56 , G01R31/00 , G01R31/26
Abstract: TEST TECHNIQUE FOR SEMICONDUCTOR MEMORY ARRAY Disclosed is a technique for testing electronic storage arrays including bistable storage cells fabricated in accordance with integrated semiconductor technology. Also described is the testing of load devices in a flip flop storage cell which is connected to a pair of bit lines that are inaccessible for the direct application of test signals. Testing is performed by altering the time duration of signals applied to the memory cells under test.
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公开(公告)号:CA1042520A
公开(公告)日:1978-11-14
申请号:CA236362
申请日:1975-09-25
Applicant: IBM
Inventor: CHU WILLIAM M , LEE JAMES M
IPC: H03K5/04 , H02M3/07 , H02M3/155 , H03K3/356 , H03K5/13 , H03K5/15 , H03K17/14 , H03K17/28 , H03K17/687 , H03K19/003 , H03K19/096 , H03K1/17
Abstract: FET LOAD GATE COMPENSATOR An FET load gate compensator employing feedback to control the load gate voltage holds the circuit delay and power dissipation of an integrated circuit nearly constant. The integrated circuit chip is provided with several stages of inverters which act as a delay sensor to simulate the delay of the operational circuit on the chip. The time delay of the delay sensor on the integrated circuit chip is compared with an external clock reference by a delay comparator. The delay comparator generates an output voltage which is used to adjust the load gate voltage until the delay in the delay sensor is equal to the clock reference. Since the same load gate voltage is distributed in the rest of the operational circuits in the integrated circuit chip, the delay times of these circuits will track with that of the delay sensor and thus also tend to be held constant.
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公开(公告)号:FR2292382A1
公开(公告)日:1976-06-18
申请号:FR7536045
申请日:1975-11-17
Applicant: IBM
Inventor: CHU WILLIAM M , LEE JAMES M
IPC: H03K5/04 , H02M3/07 , H02M3/155 , H03K3/356 , H03K5/13 , H03K5/15 , H03K17/14 , H03K17/28 , H03K17/687 , H03K19/003 , H03K19/096
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公开(公告)号:FR2276661A1
公开(公告)日:1976-01-23
申请号:FR7516532
申请日:1975-05-21
Applicant: IBM
Inventor: CHU WILLIAM M , SONODA GEORGE
IPC: G11C11/413 , G06F11/22 , G11C11/412 , G11C29/00 , G11C29/04 , G11C29/14 , G11C29/50 , G11C29/56
Abstract: Disclosed is a technique for testing electronic storage arrays including bistable storage cells fabricated in accordance with integrated semiconductor technology. Also described is the testing of load devices in a flip flop storage cell which is connected to a pair of bit lines that are inaccessible for the direct application of test signals. Testing is performed by altering the time duration of signals applied to the memory cells under test.
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公开(公告)号:DE2527486A1
公开(公告)日:1976-01-15
申请号:DE2527486
申请日:1975-06-20
Applicant: IBM
Inventor: CHU WILLIAM M , SONODA GEORGE
IPC: G11C11/413 , G06F11/22 , G11C11/412 , G11C29/00 , G11C29/04 , G11C29/14 , G11C29/50 , G11C29/56 , G11C7/00
Abstract: Disclosed is a technique for testing electronic storage arrays including bistable storage cells fabricated in accordance with integrated semiconductor technology. Also described is the testing of load devices in a flip flop storage cell which is connected to a pair of bit lines that are inaccessible for the direct application of test signals. Testing is performed by altering the time duration of signals applied to the memory cells under test.
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公开(公告)号:CA1017812A
公开(公告)日:1977-09-20
申请号:CA202288
申请日:1974-06-12
Applicant: IBM
Inventor: CHU WILLIAM M , LEE JAMES M , LUCKETT GARY C
IPC: H03K3/356
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公开(公告)号:AU8067975A
公开(公告)日:1976-11-04
申请号:AU8067975
申请日:1975-04-30
Applicant: IBM
Inventor: CHU WILLIAM M , SONODA GEORGE
IPC: G11C11/413 , G06F11/22 , G11C11/412 , G11C29/00 , G11C29/04 , G11C29/14 , G11C29/50 , G11C29/56 , G01R31/28 , G11C11/34
Abstract: Disclosed is a technique for testing electronic storage arrays including bistable storage cells fabricated in accordance with integrated semiconductor technology. Also described is the testing of load devices in a flip flop storage cell which is connected to a pair of bit lines that are inaccessible for the direct application of test signals. Testing is performed by altering the time duration of signals applied to the memory cells under test.
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公开(公告)号:DE2541131A1
公开(公告)日:1976-05-26
申请号:DE2541131
申请日:1975-09-16
Applicant: IBM
Inventor: CHU WILLIAM M , LEE JAMES M
IPC: H03K5/04 , H02M3/07 , H02M3/155 , H03K3/356 , H03K5/13 , H03K5/15 , H03K17/14 , H03K17/28 , H03K17/687 , H03K19/003 , H03K19/096
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