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Abstract

A programmable logic circuit includes a non-volatile, in-circuit programmable FPGA memory containing configuration data for programming an FPGA to perform one or more desired logic functions. The chips in the circuit may be packaged individually or may be mounted in die form on a multichip module. A method for programming an FPGA memory includes the steps of downloading a first set of data into an FPGA to program the FPGA to function as an FPGA memory programmer, and then downloading a second set of data into the FPGA, the second set of data being of a type for programming the FPGA to perform one or more logic functions. The second set of data, however, is not immediately loaded into the FPGA but instead is programmed into the FPGA memory in a manner controlled by the programming function of the FPGA. A method for programming an FPGA includes as a step the aforementioned method. A multichip module contains an FPGA die and FPGA memory die, either of which may be programmed in accordance with the methods described above.

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First Claim