JPH0330128U - - Google Patents
Info
- Publication number
- JPH0330128U JPH0330128U JP9126889U JP9126889U JPH0330128U JP H0330128 U JPH0330128 U JP H0330128U JP 9126889 U JP9126889 U JP 9126889U JP 9126889 U JP9126889 U JP 9126889U JP H0330128 U JPH0330128 U JP H0330128U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- power source
- semiconductor device
- backup
- backup power
- 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
- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例を示すＩＣカード
の回路図、第２図は従来のＩＣカードの回路図で
ある。図中１はコネクタ、２はダイオード、３は
電池バツクアツプしない半導体素子、４はバツク
アツプする半導体素子、５はバツクアツプ電源選
択回路、６は電池を示す。なお、図中、同一符号
は同一、または相当部分を示す。
FIG. 1 is a circuit diagram of an IC card showing an embodiment of this invention, and FIG. 2 is a circuit diagram of a conventional IC card. In the figure, 1 is a connector, 2 is a diode, 3 is a semiconductor element that does not back up the battery, 4 is a semiconductor element that is backed up, 5 is a backup power source selection circuit, and 6 is a battery. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
クアツプをしない半導体素子及び電池を内蔵する
ＩＣカードにおいて、前記半導体素子のバツクア
ツプ電源として、上記電池とシステム側から供給
されるバツクアツプ電源のいずれかを選択するバ
ツクアツプ電源選択回路を備えたことを特徴とす
るＩＣカード。 Backup power source selection for selecting either the battery or a backup power source supplied from the system side as a backup power source for the semiconductor device in a semiconductor device that performs battery backup, a semiconductor device that does not perform battery backup, and an IC card that incorporates a battery. An IC card characterized by being equipped with a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9126889U JPH0330128U (en) | 1989-08-01 | 1989-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9126889U JPH0330128U (en) | 1989-08-01 | 1989-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330128U true JPH0330128U (en) | 1991-03-25 |
Family
ID=31640764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9126889U Pending JPH0330128U (en) | 1989-08-01 | 1989-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330128U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160124A (en) * | 1984-12-29 | 1986-07-19 | Hitachi Ltd | Power supply system to memory |
-
1989
- 1989-08-01 JP JP9126889U patent/JPH0330128U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160124A (en) * | 1984-12-29 | 1986-07-19 | Hitachi Ltd | Power supply system to memory |
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