JPS6473435A - Semiconductor integrated circuit device - Google Patents
Semiconductor integrated circuit deviceInfo
- 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
Links
Landscapes
- 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.
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)
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 |
-
1987
- 1987-09-16 JP JP62229536A patent/JPS6473435A/en active Pending
Cited By (7)
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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