Multiple page programmable logic architecture

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

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307243, 307468, 364716, H03K 19177

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active

049423193

ABSTRACT:
A PLA is organized into a plurality of pages of programmable logic arrays, including means for selecting an appropriate set of one or more of the plurality of pages of programmable logic arrays, including means for selecting an appropriate set of one or more of the plurality of pages for operation at any given time. Means are provided for switching pages when necessary in response to input signals including, if desired, signals fed back from the output leads of the PLA, or internal leads within the PLA. By having only a selected one or more of the pages of the PLA operable at any given time, the number of product and sum terms functioning at any given time is significantly less than the total number of product and sum terms available in the device, thereby minimizing power consumption. Furthermore, by utilizing a paged architecture, speed is increased and power consumption reduced since the number of leads connected to, and thus the capacitance of, the product and/or sum term lines is reduced.

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