JPH04137080A - Ic memory card - Google Patents

Ic memory card

Info

Publication number
JPH04137080A
JPH04137080A JP25737890A JP25737890A JPH04137080A JP H04137080 A JPH04137080 A JP H04137080A JP 25737890 A JP25737890 A JP 25737890A JP 25737890 A JP25737890 A JP 25737890A JP H04137080 A JPH04137080 A JP H04137080A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
voltage
pp
cc
cut
circuit
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
JP25737890A
Inventor
Kiyomoto Nishi
Original Assignee
Fuji Photo Film Co 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

Links

Abstract

PURPOSE: To prevent the destruction of an EEPROM within a card by performing the ON/OFF control of a program power supply based on the output of a detection means detecting the voltage of a logic power supply.
CONSTITUTION: An IC memory card 10 is supplied with a logic voltage Vcc as well as a program voltage Vpp via a power supply control circuit 20. The circuit 20 outputs or cut off the voltage Vpp based on the voltage Vcc. That is, when the voltage Vcc is 5V, the circuit 20 is turned on to cause the externally applied voltage Vpp (12V) to be supplied to an EEPROM 13; while when the voltage Vcc is 0V, the circuit 20 is turned off to cause the externally applied voltage Vpp to be cut off. Accordingly, when the voltage Vcc is cut off even if the voltage Vpp is externally applied, the voltage Vpp is also cut off. Thus, the destruction of the EEPROM 13 can be prevented.
COPYRIGHT: (C)1992,JPO&Japio
JP25737890A 1990-09-28 1990-09-28 Ic memory card Pending JPH04137080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25737890A JPH04137080A (en) 1990-09-28 1990-09-28 Ic memory card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25737890A JPH04137080A (en) 1990-09-28 1990-09-28 Ic memory card

Publications (1)

Publication Number Publication Date
JPH04137080A true true JPH04137080A (en) 1992-05-12

Family

ID=17305559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25737890A Pending JPH04137080A (en) 1990-09-28 1990-09-28 Ic memory card

Country Status (1)

Country Link
JP (1) JPH04137080A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009151573A (en) * 2007-12-20 2009-07-09 Fujitsu Microelectronics Ltd Semiconductor integrated circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62220398A (en) * 1986-03-24 1987-09-28 Hitachi Vlsi Eng Integrated circuit card
JPH03500944A (en) * 1988-12-20 1991-02-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62220398A (en) * 1986-03-24 1987-09-28 Hitachi Vlsi Eng Integrated circuit card
JPH03500944A (en) * 1988-12-20 1991-02-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009151573A (en) * 2007-12-20 2009-07-09 Fujitsu Microelectronics Ltd Semiconductor integrated circuit

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