JPH0214128U - - Google Patents
Info
- Publication number
- JPH0214128U JPH0214128U JP9122188U JP9122188U JPH0214128U JP H0214128 U JPH0214128 U JP H0214128U JP 9122188 U JP9122188 U JP 9122188U JP 9122188 U JP9122188 U JP 9122188U JP H0214128 U JPH0214128 U JP H0214128U
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- potential
- power supply
- output terminal
- load
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Power Sources (AREA)
- Microcomputers (AREA)
Description
第１図は本考案の一実施例のマイクロコンピユ
ータ１１とその周辺の電気的構成を示すブロツク
図、第２図は負荷１９の動作状態を示す波形図、
第３図は動作を説明するためのフローチヤート、
第４図は従来技術のマイクロコンピユータ１とそ
の周辺の電気的構成を示すブロツク図である。
１１……マイクロコンピユータ、１２……イグ
ニシヨンキースイツチ、１３……バツテリ、１４
，２２……定電圧回路、１５……処理回路、１６
……入力手段、１８……出力端子、１９……負荷
、２１……ＲＡＭ、２３，２４……反転バツフア
、ＶＣＣ……電源入力端子、ＶＤＤ……バツクア
ツプ入力端子。
FIG. 1 is a block diagram showing the electrical configuration of a microcomputer 11 and its surroundings according to an embodiment of the present invention, and FIG. 2 is a waveform diagram showing the operating state of the load 19.
Figure 3 is a flowchart for explaining the operation.
FIG. 4 is a block diagram showing the electrical configuration of a conventional microcomputer 1 and its surroundings. 11...Microcomputer, 12...Ignition key switch, 13...Battery, 14
, 22... Constant voltage circuit, 15... Processing circuit, 16
...Input means, 18...Output terminal, 19...Load, 21...RAM, 23, 24...Inverting buffer, VCC...Power input terminal, VDD...Backup input terminal.
Claims (1)
電力付勢し、 そのマイクロコンピユータは、 負荷の一方端子に接続される出力端子と、 前記出力端子を前記電源の一方の電位または他
方の電位とするためのスイツチング回路とを含み
、 前記負荷の他方端子は前記電源のいずれか一方
の電位に接続され、 マイクロコンピユータは、該マイクロコンピユ
ータの待機中に、前記出力端子を負荷の前記他方
端子の電位となるように前記スイツチング回路を
制御することを特徴とするマイクロコンピユータ
の電源回路。[Claims for Utility Model Registration] A microcomputer is constantly energized by a DC power supply, and the microcomputer has an output terminal connected to one terminal of a load, and the output terminal connected to one potential of the power supply or a switching circuit for setting the output terminal to the other potential, the other terminal of the load is connected to one of the potentials of the power supply, and the microcomputer is configured to switch the output terminal to the potential of the load while the microcomputer is on standby. A power supply circuit for a microcomputer, characterized in that the switching circuit is controlled so that the potential of the other terminal becomes the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9122188U JPH0214128U (en) | 1988-07-09 | 1988-07-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9122188U JPH0214128U (en) | 1988-07-09 | 1988-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214128U true JPH0214128U (en) | 1990-01-29 |
Family
ID=31315706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9122188U Pending JPH0214128U (en) | 1988-07-09 | 1988-07-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214128U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884330A (en) * | 1981-11-13 | 1983-05-20 | Canon Inc | Input circuit of microprocessor |
| JPS62144218A (en) * | 1985-12-18 | 1987-06-27 | Fujitsu Ltd | Current saving system for standby move circuit |
-
1988
- 1988-07-09 JP JP9122188U patent/JPH0214128U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884330A (en) * | 1981-11-13 | 1983-05-20 | Canon Inc | Input circuit of microprocessor |
| JPS62144218A (en) * | 1985-12-18 | 1987-06-27 | Fujitsu Ltd | Current saving system for standby move circuit |
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