JPS6473435A - Semiconductor integrated circuit device - Google Patents

Semiconductor integrated circuit device

Info

Publication number
JPS6473435A
JPS6473435A JP62229536A JP22953687A JPS6473435A JP S6473435 A JPS6473435 A JP S6473435A JP 62229536 A JP62229536 A JP 62229536A JP 22953687 A JP22953687 A JP 22953687A JP S6473435 A JPS6473435 A JP S6473435A
Authority
JP
Japan
Prior art keywords
area
logical
signal
storage area
card
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62229536A
Other languages
Japanese (ja)
Inventor
Naomiki Mitsuishi
Kiyoshi Matsubara
Hiroshi Takamori
Yoshiyuki Ozawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62229536A priority Critical patent/JPS6473435A/en
Publication of JPS6473435A publication Critical patent/JPS6473435A/en
Pending legal-status Critical Current

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  • Storage Device Security (AREA)

Abstract

PURPOSE:To prevent miswrite, and to lighten the burden of a software for data control by dividing a non-volatile storage device into plural areas, and inhibiting access to the individual area. CONSTITUTION:The storage area M1 of the non-volatile storage device EEPROM is made to be the area for a cash card, and the storage area M2 is to be the area for a medical card, and the storage area M3 is to be a common area. A CPU discriminates a use purpose, and in the case of use as the cash card, it accesses a control register CR, and sets a signal S1 at logical '1', and clears the signal S2 to logical '0'. Besides, in the case of the use as the medical card, it accesses the control register CR, and clears the signal S1 to logical '0', and sets the signal S2 at logical '1'. On the other hand, the storage area M3 to be used as the common area is constantly kept selectable. Thus, when it is used as the cash card, the possibility of the miswrite to the storage area M2 to be used as the medical card, etc. can be made small.
JP62229536A 1987-09-16 1987-09-16 Semiconductor integrated circuit device Pending JPS6473435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62229536A JPS6473435A (en) 1987-09-16 1987-09-16 Semiconductor integrated circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62229536A JPS6473435A (en) 1987-09-16 1987-09-16 Semiconductor integrated circuit device

Publications (1)

Publication Number Publication Date
JPS6473435A true JPS6473435A (en) 1989-03-17

Family

ID=16893708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62229536A Pending JPS6473435A (en) 1987-09-16 1987-09-16 Semiconductor integrated circuit device

Country Status (1)

Country Link
JP (1) JPS6473435A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402683A2 (en) * 1989-06-14 1990-12-19 Digital Equipment Corporation Method and apparatus for updating firmware resident in an electrically erasable programmable read-only memory
US5511183A (en) * 1992-05-12 1996-04-23 Fujitsu Limited Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipments
JPWO2006080063A1 (en) * 2005-01-27 2008-06-19 スパンション エルエルシー Semiconductor device, address allocation method and verify method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402683A2 (en) * 1989-06-14 1990-12-19 Digital Equipment Corporation Method and apparatus for updating firmware resident in an electrically erasable programmable read-only memory
US5210854A (en) * 1989-06-14 1993-05-11 Digital Equipment Corporation System for updating program stored in eeprom by storing new version into new location and updating second transfer vector to contain starting address of new version
US5511183A (en) * 1992-05-12 1996-04-23 Fujitsu Limited Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipments
US5767647A (en) * 1992-05-12 1998-06-16 Fujitsu Limited Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipment
US5982120A (en) * 1992-05-12 1999-11-09 Fujitsu Limited Library apparatus having a motor driving control including abnormal motor and excess current detecting circuits
JPWO2006080063A1 (en) * 2005-01-27 2008-06-19 スパンション エルエルシー Semiconductor device, address allocation method and verify method
JP4944763B2 (en) * 2005-01-27 2012-06-06 スパンション エルエルシー Semiconductor device, address allocation method and verify method

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