JPS63139626U - - Google Patents
Info
- Publication number
- JPS63139626U JPS63139626U JP3204587U JP3204587U JPS63139626U JP S63139626 U JPS63139626 U JP S63139626U JP 3204587 U JP3204587 U JP 3204587U JP 3204587 U JP3204587 U JP 3204587U JP S63139626 U JPS63139626 U JP S63139626U
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- inputs
- power supply
- pulse
- commercial 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
- 238000001514 detection method Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
Description
第１図は本考案の一実施例によるマイコンの停
電検出回路に係わる回路図である。
１……商用電源、７……マイコン、１２……ツ
エナーダイオード、１４……トランジスタ、２７
……コンデンサ、Ａ……検出回路、Ｂ……パルス
回路、Ｃ……電圧検出回路。
FIG. 1 is a circuit diagram of a power failure detection circuit of a microcomputer according to an embodiment of the present invention. 1... Commercial power supply, 7... Microcomputer, 12... Zener diode, 14... Transistor, 27
...Capacitor, A...Detection circuit, B...Pulse circuit, C...Voltage detection circuit.
Claims (1)
の内部処理を行なわせる停電補償用コンデンサ２
７を備えてなるものにおいて、商用電源１の停電
を検出するツエナーダイオード１２とマイコン７
に該停電を知らしめるダイオード１４などよりな
る検出回路Ａと、商用電源２の再通電開始時のマ
イコン７にパルスによるリセツト信号を入力する
パルス回路Ｂと、該再通電開始後の充電途上の前
記コンデンサ２７の電圧を介してマイコン７にリ
セツト信号を入力するとともに該充電電圧がマイ
コン７の動作電圧到達時のマイコン７にリセツト
の解除信号を入力する電圧検出回路Ｃとを備えて
なるマイコンの停電検出回路。 Even if the commercial power supply 1 is stopped, the microcomputer 7
Power failure compensation capacitor 2 that performs internal processing
7, a Zener diode 12 for detecting a power outage of the commercial power supply 1 and a microcomputer 7
a detection circuit A consisting of a diode 14 etc. that informs the power outage, a pulse circuit B that inputs a pulse reset signal to the microcomputer 7 when the commercial power supply 2 starts to be reenergized, and a pulse circuit B that inputs a pulse reset signal to the microcomputer 7 when the commercial power supply 2 starts to be reenergized; A power outage of a microcomputer comprising a voltage detection circuit C that inputs a reset signal to the microcomputer 7 via the voltage of the capacitor 27 and also inputs a reset release signal to the microcomputer 7 when the charging voltage reaches the operating voltage of the microcomputer 7. detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3204587U JPS63139626U (en) | 1987-03-05 | 1987-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3204587U JPS63139626U (en) | 1987-03-05 | 1987-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63139626U true JPS63139626U (en) | 1988-09-14 |
Family
ID=30838342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3204587U Pending JPS63139626U (en) | 1987-03-05 | 1987-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63139626U (en) |
-
1987
- 1987-03-05 JP JP3204587U patent/JPS63139626U/ja active Pending