Programmable logic device including verify circuit for macro-cel

Details Programmable logic device including verify circuit for macro-cel Programmable logic device including verify circuit for macro-cel

1990-12-26

1992-04-14

Gossage, Glenn

Static information storage and retrieval

Read/write circuit

Including specified plural element logic arrangement

365185, 36518907, 365 63, 307465, 307468, 34082587, 34082591, G11C 1606, H03K 190944

Patent

active

051053888

ABSTRACT:
A programmable logic device includes an input/output buffer, a logic array, switches for switching signal lines provided between the logic array and the input/output buffer and feedback lines between an input and an output of the logic array so as to alter the logic operation. Switching operations of the switches such as an open/close operation and a selection operation, are determined by the data stored in a plurality of non-volatile memory elements arranged in a matrix of rows and columns, the non-volatile memory elements being respectively associated with the switches. The contents of the memory elements are read out and stored in registers. The data contents of the non-volatile memory elements as thus stored in the registers are applied to control terminals of the switches.

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