Invention Application
US20010030554A1 Programmable logic arrays 有权
可编程逻辑阵列

Programmable logic arrays
Abstract:
A programmable logic array (PLA) includes at least one AND plane including an array of transistors arranged in rows and columns. The transistors belonging to a same column may be connected in series with each other. Two end conduction terminals of the series connected transistors may be coupled to a supply voltage rail and to a reference, respectively. The transistors of the first and last rows of the array may have their control terminals coupled to respective opposite enabling/disabling potentials. Except for the first and last rows, first, second, and third control lines are associated with each row of the array. Except for the first and last rows, each transistor of each row may have its control terminal connected to one of the three control lines associated with its row. The PLA may alternatively include at least one OR plane.
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