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.:
Date of Patent:
Oct. 01, 1996
Filed:
Jun. 06, 1995
Keiji Terada, Tenri, JP;
Hidetake Tanaka, Gose, JP;
Sharp Kabushiki, Osaka, JP;
Abstract
An IC card according to the present invention includes a plurality of flash memories sharing data buses and address buses corresponding to addresses except for a decode address, and a card interface for receiving an external address signal, an external data signal, and an external control signal and for controlling access to and from the external signals. The card interface includes a test circuit for applying a signal potential to a plurality of control signal output terminals for placing the plurality of flash memories in a write enabled state, the signal potential being applied by using an active signal, and the IC card also includes a signal input pad for inputting the active signal to the test circuit.