Device and method for testing integrated circuit dice in an...

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing

Reexamination Certificate

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Details

C324S763010, C326S038000, C365S200000, C365S201000

Reexamination Certificate

active

07730372

ABSTRACT:
An IC module, such as a Multi-Chip Module (MCM), includes multiple IC dice, each having a test mode enable bond pad, such as an output enable pad. A fuse incorporated into the MCM's substrate connects each die's test mode enable bond pad to one of the MCM's no-connection (N/C) pins, and a resistor incorporated into the substrate connects the test mode enable bond pads to one of the MCM's ground pins. By applying a supply voltage to the test mode enable bond pads through the N/C pin, a test mode is initiated in the dice. Once testing is complete, the fuse may be blown, and a ground voltage applied to the test mode enable bond pads through the ground pins so the resistor disables the test mode in the dice and initiates an operational mode. As a result, dice packaged in IC modules may be tested after packaging.

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NN8607696 (Test Circuit for Detecting and Measuring a Defect-Induced Increase in the Word Line Potential of Semiconductor Arrays; IBM Technical Disclosure Bulletin: vol. #29, pp. 696-698; Jul. 1, 1986.

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