06118720 is referenced by 6 patents and cites 32 patents.

A look-up-table-based programmable logic device is provided with memory circuitry which can be operated either as random access memory ("RAM") or to perform product term ("p-term") logic. Each individual row of the memory is separately addressable for writing data to the memory or, in RAM mode, for reading data from the memory. Alternatively, multiple rows of the memory are addressable in parallel to read p-terms from the memory. The memory circuitry of the invention is particularly useful as an addition to look-up-table-type programmable logic devices because the p-term capability of the memory circuitry provides an efficient way to perform wide fan-in logic functions which would otherwise require trees of multiple look-up tables.

Title
Programmable logic array device with random access memory configurable as product terms
Application Number
34050
Publication Number
6118720
Application Date
November 19, 1999
Publication Date
September 12, 2000
Inventor
Francis B Heile
Santa Clara
CA, US
Agent
Fish & Neave
Agent
Robert R Jackson
Assignee
Altera Corporation
CA, US
IPC
G11C 8/00
H03K 19/77
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