Asynchronous or synchronous load multifunction flip-flop

Details Asynchronous or synchronous load multifunction flip-flop Asynchronous or synchronous load multifunction flip-flop

1993-08-11

1995-04-25

Hudspeth, David R.

Electronic digital logic circuitry

Multifunctional or programmable

Sequential or with flip-flop

327218, H03K 19177

Patent

active

054101948

ABSTRACT:
According to the present invention hardware is provided in a user configurable logic integrated circuit chip to allow a user to select multiple storage functions such as D, T, JK, to receive multiple input signals and generate a storage input signal using a function such as OR or MUX, along with parallel load and asynchronous load options. A relatively small hardware area can offer these functions, which are commonly used, and can leave general purpose logic for other more complex functions, thus increasing the amount of logic which a user may implement in a given silicon area.

REFERENCES:
patent: 4758746 (1988-07-01), Birkner et al.
patent: 4758985 (1988-07-01), Carter
patent: 4857773 (1989-08-01), Takata et al.
patent: 5280202 (1994-01-01), Chan et al.
patent: 5317210 (1994-05-01), Patel
Xilinx Programmable Gate Array Data Book, 1992, available from Xilinx, Inc., 2100 Logic Drive, San Jose, Calif. 95124.

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