JPS6214535U - - Google Patents
Info
- Publication number
- JPS6214535U JPS6214535U JP10174485U JP10174485U JPS6214535U JP S6214535 U JPS6214535 U JP S6214535U JP 10174485 U JP10174485 U JP 10174485U JP 10174485 U JP10174485 U JP 10174485U JP S6214535 U JPS6214535 U JP S6214535U
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signal
- generated
- pulse signal
- reset signal
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Debugging And Monitoring (AREA)
Description
第１図はこの考案の一実施例を示す回路図、第
２図は各部波形図である。
１……マイクロコンピユータ、２……ウオツチ
ドツグタイマ、３……カウンタ、４……パルス幅
測定回路、９……負荷。
FIG. 1 is a circuit diagram showing an embodiment of this invention, and FIG. 2 is a waveform diagram of each part. 1... Microcomputer, 2... Watchdog timer, 3... Counter, 4... Pulse width measurement circuit, 9... Load.
Claims (1)
のパルス信号が繰返し発生している時に１個だけ
生じる第２のパルス信号とを発生するマイクロコ
ンピユータと、第１のパルスが所定期間発生しな
い時はマイクロコンピユータをリセツトするため
のリセツト信号を発生するウオツチドツグタイマ
と、ウオツチドツグタイマから送出されるリセツ
ト信号をカウントするカウンタと、第２のパルス
信号のパルス幅が所定範囲内にあるときカウンタ
をリセツトするリセツト信号を発生するパルス幅
測定回路とから構成されるマイクロコンピユータ
異常検出回路。 a first pulse signal generated every predetermined period;
a second pulse signal that occurs only once when the first pulse signal is repeatedly generated, and a reset signal for resetting the microcomputer when the first pulse is not generated for a predetermined period of time A watchdog timer, a counter that counts the reset signal sent from the watchdog timer, and a pulse width that generates a reset signal that resets the counter when the pulse width of the second pulse signal is within a predetermined range. A microcomputer abnormality detection circuit consisting of a measurement circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10174485U JPH049638Y2 (en) | 1985-07-05 | 1985-07-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10174485U JPH049638Y2 (en) | 1985-07-05 | 1985-07-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6214535U true JPS6214535U (en) | 1987-01-28 |
| JPH049638Y2 JPH049638Y2 (en) | 1992-03-10 |
Family
ID=30972753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10174485U Expired JPH049638Y2 (en) | 1985-07-05 | 1985-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH049638Y2 (en) |
-
1985
- 1985-07-05 JP JP10174485U patent/JPH049638Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH049638Y2 (en) | 1992-03-10 |