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    • 1. 发明专利
    • PROGRAMMABLE LOGIC DEVICE
    • JPH0758630A
    • 1995-03-03
    • JP4195294
    • 1994-02-16
    • INMOS LTDUNIV OXFORD
    • ANTONII IAN SUTANSUFUIIRUDO
    • H01L21/82G11C15/04H03K19/177
    • PURPOSE: To obtain a programmable logic device having diversity by designating the address of the storing position which limits a look-up table and, at the same time, making the device usable as a logical function generator having the function decided by stored route, designating data. CONSTITUTION: A plurality of interconnected logic circuits are respectively provided with memory cell arrays which output data stored in response to address signals to data lines D and, when input data coincide with the stored data, output the data to a coincident line M. Each array is provided with a decoder 18 which operates as a RAM, a sense circuit 22, and a CAM access circuit 24 which operates as an associative memory CAM. In addition, a programmable logic device is constituted by additionally providing a program circuit which controls the selection of a RAM or CAM mode. Therefore, the programmable logic device has such diversity that the user of the device can obtain the optimum effect in different logical applications.