JPH01172152U - - Google Patents
Info
- Publication number
- JPH01172152U JPH01172152U JP6863088U JP6863088U JPH01172152U JP H01172152 U JPH01172152 U JP H01172152U JP 6863088 U JP6863088 U JP 6863088U JP 6863088 U JP6863088 U JP 6863088U JP H01172152 U JPH01172152 U JP H01172152U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- watchdog reset
- input signals
- microcomputer
- reset 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
Links
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Description
第１図は本考案に係る制御回路図、第２図は制
御動作を示すタイムチヤートである。
１……ＣＰＵ（中央演算処理装置）、２……ウ
オツチドツグリセツト回路、４……リセツト阻止
回路。
FIG. 1 is a control circuit diagram according to the present invention, and FIG. 2 is a time chart showing the control operation. 1...CPU (Central Processing Unit), 2...Watchdog reset circuit, 4...Reset prevention circuit.
Claims (1)
作停止状態を維持しつつ入力信号を待機するスタ
ンバイモードとで使用されるマイクロコンピユー
タの制御回路において、動作モードでの中央演算
処理装置の暴走を検出してリセツトするウオツチ
ドツグリセツト回路と、スタンバイモードでのウ
オツチドツグリセツト回路によるリセツトを阻止
するリセツト阻止回路とを設けたことを特徴とす
るマイクロコンピユータの制御回路。 Detects runaway of the central processing unit in the operating mode in the microcomputer control circuit used in the operating mode that processes input signals and the standby mode that waits for input signals while maintaining a stopped state. 1. A control circuit for a microcomputer, comprising: a watchdog reset circuit that resets the watchdog reset circuit; and a reset blocking circuit that prevents the watchdog reset circuit from resetting in standby mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6863088U JPH01172152U (en) | 1988-05-24 | 1988-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6863088U JPH01172152U (en) | 1988-05-24 | 1988-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172152U true JPH01172152U (en) | 1989-12-06 |
Family
ID=31293938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6863088U Pending JPH01172152U (en) | 1988-05-24 | 1988-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579648U (en) * | 1992-03-24 | 1993-10-29 | 株式会社三ツ葉電機製作所 | Watchdog detection control circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119453A (en) * | 1982-12-27 | 1984-07-10 | Fujitsu Ltd | Cpu run-away monitoring circuit |
| JPS61296443A (en) * | 1985-06-24 | 1986-12-27 | Mitsubishi Electric Corp | Watchdog timer |
| JPS6260038A (en) * | 1985-09-10 | 1987-03-16 | Hochiki Corp | Watchdog circuit |
-
1988
- 1988-05-24 JP JP6863088U patent/JPH01172152U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59119453A (en) * | 1982-12-27 | 1984-07-10 | Fujitsu Ltd | Cpu run-away monitoring circuit |
| JPS61296443A (en) * | 1985-06-24 | 1986-12-27 | Mitsubishi Electric Corp | Watchdog timer |
| JPS6260038A (en) * | 1985-09-10 | 1987-03-16 | Hochiki Corp | Watchdog circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579648U (en) * | 1992-03-24 | 1993-10-29 | 株式会社三ツ葉電機製作所 | Watchdog detection control circuit |