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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5872994 B1

PDFFull Text
Date of Patent:
Feb. 16, 1999

Filed:

Nov. 12, 1996

Flash memory incorporating microcomputer having on-board writing function

Applicant:
Inventors:

Shin-Ichiro Akiyama, Tokyo, JP;

Sadahiro Yasuda, Tokyo, JP;

Yuichi Iizuka, Tokyo, JP;

Hiroaki Nishimoto, Kawasaki, JP;

Yuuichi Osada, Kawasaki, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:

Scully, Scott, Murphy and Presser

Primary Examiner:

Daniel H Pan

Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
39580043 ; 711165 ; 711105 ; 39518305 ; 36518533 ;
Abstract

In a microcomputer comprising internal buses, a serial communication interface, a flash memory, a RAM, a ROM for storing a writing program, an input/output port, a CPU, and a mode control unit for setting various operation modes and test modes in the microcomputer, a switching circuit is connected between the ROM and the internal buses and between the input/output port and the internal buses. The mode control unit operates the switching circuit in an emulation test mode so that the ROM is deactivated and the input/output port is activated. Then, the CPU reads a program from the serial communication interface and writes the program into the flash memory in accordance with a writing program from the input/output port.

Find Patent Forward Citations

Akiyama, Shin-Ichiro. (1999). Flash memory incorporating microcomputer having on-board writing function (U.S. Patent No. 5872994). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5872994

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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