JPS6389148U - - Google Patents
Info
- Publication number
- JPS6389148U JPS6389148U JP18409786U JP18409786U JPS6389148U JP S6389148 U JPS6389148 U JP S6389148U JP 18409786 U JP18409786 U JP 18409786U JP 18409786 U JP18409786 U JP 18409786U JP S6389148 U JPS6389148 U JP S6389148U
- Authority
- JP
- Japan
- Prior art keywords
- watchdog
- detection circuit
- circuit
- microcomputer
- power failure
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Hardware Redundancy (AREA)
- Debugging And Monitoring (AREA)
Description
第１図は本考案の一実施例の電気回路図、第２
図は従来例の電気回路図を示したものである。
１……マイクロコンピユータ、２……ウオツチ
ドツグタイマ回路、３……停電ウオツチドツグキ
ヤンセル回路、４……停電検出回路、７……ウオ
ツチドツグパルス検出回路。
Fig. 1 is an electrical circuit diagram of one embodiment of the present invention;
The figure shows an electrical circuit diagram of a conventional example. 1...Microcomputer, 2...Watchdog timer circuit, 3...Power failure watch cancel circuit, 4...Power failure detection circuit, 7...Watchdog pulse detection circuit.
Claims (1)
出してリセツト信号を出力するウオツチドツグタ
イマ回路と、停電出力を受けてウオツチドツグタ
イマをリセツトする停電ウオツチドツグキヤンセ
ル回路と、マイコンに停電信号を出力する停電検
出回路と、マイコンの出力を受けてウオツチドツ
グタイマをリセツトするウオツチドツグパルス検
出回路とからなることを特徴とするマイクロコン
ピユータの暴走検出回路。 A watchdog timer circuit that detects runaway of the microcomputer and outputs a reset signal, a power failure watchdog cancel circuit that resets the watchdog timer in response to a power outage output, and a power outage watchdog cancel circuit that sends a power outage signal to the microcontroller. 1. A runaway detection circuit for a microcomputer, comprising: a power failure detection circuit that outputs a power failure detection circuit; and a watchdog pulse detection circuit that receives an output from the microcomputer and resets a watchdog timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18409786U JPS6389148U (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18409786U JPS6389148U (en) | 1986-11-28 | 1986-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6389148U true JPS6389148U (en) | 1988-06-10 |
Family
ID=31131446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18409786U Pending JPS6389148U (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6389148U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123943A (en) * | 1984-11-20 | 1986-06-11 | Yokogawa Electric Corp | Microprocessor device |
-
1986
- 1986-11-28 JP JP18409786U patent/JPS6389148U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123943A (en) * | 1984-11-20 | 1986-06-11 | Yokogawa Electric Corp | Microprocessor device |