Patent ID: 6271587
Filing Date: 2001-08-07
Classification: G11C,H01L

Abstract:
An integrated circuit comprising first and second identical layers of circuitry, each layer comprising:a substrate having a plurality of components thereon;circuit selection circuitry comprising circuitry for enabling said integrated circuit to perform a predetermined function, said circuitry including a circuit selection terminal for receiving a signal that enables said predetermined function;N input pads labeled with a value k that runs from 1 to N, where N>1; andN output pads labeled with a value k that runs from 1 to N, each input pad being connected to a corresponding one of said output pads, such that there is a one-to-one mapping between said input pads and said output pads, said label of each input pad being different from said label of said output pad to which that input pad is connected,wherein said input pad labeled k on said second layer is connected to said output pad labeled k on said first layer for k=1 to N.