Electronic circuit device

Details Electronic circuit device Electronic circuit device

2008-05-13

2008-05-13

Everhart, Caridad M. (Department: 2891)

Semiconductor device manufacturing: process

Chemical etching

Combined with the removal of material by nonchemical means

C257S693000, C257S697000, C257SE23070, C257SE23020

Reexamination Certificate

active

07371687

ABSTRACT:
An electronic circuit device has a high-density mount board (2), on which are disposed a microcomputer (3) and random access memory (7) which are connected to each other through an exclusive memory bus (12) for high-speed data transfer, a programmable device (8) which is a variable logic circuit represented by FPGA, and an electrically-rewritable nonvolatile memory (16) which can store the operation program of the microcomputer. The high-density mount board has external mounting pins on the bottom surface so that it can be mounted on a mother board in the same manner as a system on-chip multi-chip module. With an intended logic function being set on the programmable device, a hardware-based function to be realized by the electronic circuit device can be simulated. With an operation program being written to the nonvolatile memory, a software-based function to be realized can be simulated. Consequently, the device facilitates the debugging at early stages of system development, configures a prototype system, and contributes to the time reduction throughout the system development, prototype fabrication and large-scale production.

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International Search Report from the Japanese Patent Office, dated Apr. 3, 2001.

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