TESTING EMBEDDED ARRAYS IN LARGE SCALE INTEGRATED CIRCUITS

摘要

An integrated circuit chip having an embedded array which is not directly accessible from the primary input/output chip pins is manufactured with additional test circuitry directly on the chip, such that the performance of the array may be physically tested from the input/output pins by an external chip tester while the array remains embedded. Because of the added test circuitry, tests are not limited to the original chip architecture, and a variety of array tests may be made by an external tester without redesigning the chip architecture.