Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1993-07-02
1995-03-21
Westin, Edward P.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326 21, H03K 19177
Patent
active
053999223
ABSTRACT:
A macrocell for use in a programmable logic device (PLD) providing for enhanced logic capability and reduced setup time. The preferred embodiment of the macrocell includes two look-up tables, for increased fan-in, and two flip-flops that increase fan-out, thereby doubling logic capability of the PLD without unacceptably increasing device size. Doubling the register count makes this PLD particularly suitable for applications employing high density sequential logic. Furthermore, a second register can be used for receiving fast input signals form an input to the PLD to reduce setup time.
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Optimized Reconfigurable Cell Array (ORCA) Series Field-Programmable Gate Arrays, AT&T Microelectronics Advance Data Sheet, Feb. 1993 (pp. 1-32).
Balicki Janusz K.
Kiani Khusrow
Li Ken
Nouban Behzad
Altera Corporation
Driscoll Benjamin D.
Westin Edward P.
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