Invention Grant
US6001662A Method and system for providing a reusable configurable self-test controller for manufactured integrated circuits 失效
为制造集成电路提供可重复使用的可配置自检控制器的方法和系统

Method and system for providing a reusable configurable self-test
controller for manufactured integrated circuits
Abstract:
A method and system for manufacturing integrated circuit devices having multiple memory units embedded therein. Initially, a single reusable configurable test circuit is fabricated within an integrated circuit device. A number and type of each memory unit embedded within the integrated circuit device are then identified. Finally, the single reusable configurable test circuit is configured, in response to the identifying of a number and type of each memory unit, such that only one test circuit is required for use with multiple integrated circuit devices having multiple diverse memory units embedded therein. The single reusable configurable test circuit can be placed within or outside a fixed core of the integrated circuit device. In addition, the single reusable configurable test circuit can include array built-in self test (ABIST) controller which includes a hierarchical memory configuration that includes a state machine, address counter, compare register and data pattern generator.
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