Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1992-07-23
1995-01-31
Westin, Edward P.
Electronic digital logic circuitry
Multifunctional or programmable
Array
34082583, 326 49, 327407, H03K 19177
Patent
active
053861540
ABSTRACT:
The logic cell of the current invention is useful in a field programmable logic device, particularly a device in which an interconnect structure is interconnected by antifuses, and logic cells are programmed using pass transistors. All input leads of the logic cell can be selectively inverted. The output signal from one logic cell can be cascaded as input to the adjacent cell for efficiently computing wide functions. An optional feedback path allows the cell to be optionally used for sequential functions without the delay caused by a feedback path through field programmed connections. Configuration units can serve the multiple purposes of selectively applying programming voltages to the interconnect structure, shifting in configuration information for configuring the interconnect structure, and capturing and shifting out states of the interconnect lines. A novel output buffer allows 3-state control from multiple sources. A novel reset circuit allows only the cells used as sequential elements to be reset, and only when reset would not cause contention with an input data signal.
REFERENCES:
patent: 3473160 (1969-10-01), Wahlstrom
patent: 4558236 (1985-12-01), Burrows
patent: 4612459 (1986-09-01), Pollachek
patent: 4706216 (1987-11-01), Carter
patent: 4758746 (1988-07-01), Birkner et al.
patent: 4933575 (1990-06-01), Aso
patent: 5019736 (1991-05-01), Furtek
patent: 5028821 (1991-07-01), Kaplinsky
patent: 5068549 (1991-11-01), Iwasaki
patent: 5151621 (1992-09-01), Goto
patent: 5191243 (1993-03-01), Shen et al.
patent: 5220213 (1993-06-01), Chan et al.
Birkner, J.; Chang, A.; Chua; H. T.; Chao, A.; Gordon, K.; Kleinman, B.; Kolze, P. and Wong, R.; "A Very High-Speed Field Programmable Gate Array Using Metal-to-Metal Antifuse Programmable Elements", QuickLogic Corporation, IEEE 1991 Custom Integrated Circuits Conf., May 12, 1991.
Goetting F. Erich
Parlour David B.
Trimberger Stephen M.
Sartamauro Jon
Westin Edward P.
Xilinx , Inc.
Young Edel M.
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