H - Electricity – 03 – K
Patent
H - Electricity
03
K
328/128
H03K 19/177 (2006.01)
Patent
CA 1331638
MULTIPLE PAGE PROGRAMMABLE LOGIC ARCHITECTURE ABSTRACT OF THE DISCLOSURE 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.
614376
National Semiconductor Corporation
Smart & Biggar
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