Method and apparatus to generate mask programmable device

Details Method and apparatus to generate mask programmable device Method and apparatus to generate mask programmable device

1996-06-26

1999-07-20

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

326 41, H03K 19173, H03K 19177

Patent

active

059260351

ABSTRACT:
The present invention concerns a mask-programmed cell comprising an input, an output and a transistor. The transistor has a first terminal and a second terminal. The cell may be configured in a first of three possible states when (a) the cell input is coupled to the first terminal via a first of two mask-programmed interconnects, and (b) the second terminal is coupled to the output. The cell may be configured in a second of three possible states when (a) a complement of the cell input is coupled to the first terminal via a second of the two mask-programmed interconnects, and (b) the second terminal is coupled to the output. The cell may be configured in a third of the three possible states when either the second terminal or the output is coupled to a predetermined level signal.

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