Programmable logic array device using EPROM technology

摘要

The programmable logic array device basically comprises a programmable AND array (FIGS. 5, 11) having a plurality of memory cells (30, 31) arranged in addressable rows (40-45) and columns (32-38) and which can be individually programmed to contain logic data; an input circuit (FIG. 9) for receiving an input signal and for developing a buffered signal corresponding thereto; a first row driver (FIG. 10) responsive to the buffered signal and operative to interrogate a particular row of the memory cells and to cause the AND array to output signals corresponding to the data contained therein; first sensing circuitry (FIG. 12) for sensing the signals output by the AND array and for developing corresponding data signals which are the logical OR of signals output by the AND array; first output terminal circuitry; and first switching circuitry (FIG. 14) responsive to a control signal and operative to couple the data signal either into the storage circuitry or to the output terminal circuitry (FIG. 16). The device has the advantages generally of greater logic density and lower system power than standard family logic components.