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

1999-06-02

2000-09-12

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 39, 326 41, 326 47, G06F 738

Patent

active

061182990

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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Digital Design Principles and Practices, by John F. Wakerly, 1989, pp 214-217.
S. Babar Raza, U.S.S.N. 08/669,713, Method and Apparatus to Generate Mask Programmable Device, Filed: Jun. 26, 1996.
S. Babar Raza, U.S.S.N. 08/669,715, Method and Apparatus to Generate Mask Programmable Device, Filed: Jun. 26, 1996.
Wakerly, John, Digital Design Principles and Practices, Sep., 1989, pp. 213-217.

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