JPS61155927U - - Google Patents
Info
- Publication number
- JPS61155927U JPS61155927U JP3761385U JP3761385U JPS61155927U JP S61155927 U JPS61155927 U JP S61155927U JP 3761385 U JP3761385 U JP 3761385U JP 3761385 U JP3761385 U JP 3761385U JP S61155927 U JPS61155927 U JP S61155927U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- microcomputer
- reset
- capacitor
- transistor
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は第１図に示された実施例の動作を示す波形図で
ある。
１……電圧保持回路、２……マイクロコンピユ
ータ、６……トランジスタ、４，７，８，９，１
２……抵抗、５，１０……コンデンサ、３，１１
……ダイオード。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a waveform diagram showing the operation of the embodiment shown in FIG. 1... Voltage holding circuit, 2... Microcomputer, 6... Transistor, 4, 7, 8, 9, 1
2...Resistor, 5,10...Capacitor, 3,11
……diode.
Claims (1)
をマイクロコンピユータに供給する電圧保持回路
と、前記電源の復帰及び遮断によつてオン及びオ
フされるトランジスタと、該トランジスタと前記
電圧保持回路の出力電圧との間に設けられた抵抗
及びコンデンサから成る充電回路と、前記コンデ
ンサに並列接続された放電回路とを備え、前記コ
ンデンサの端子電圧がリセツト信号として前記マ
イクロコンピユータのリセツト端子に供給される
ことを特徴とするマイクロコンピユータのリセツ
ト回路。 A voltage holding circuit that supplies a voltage of a certain value or more to a microcomputer for a certain period of time when the power supply is cut off, a transistor that is turned on and off when the power supply is restored and cut off, and an output voltage of the transistor and the voltage holding circuit. and a discharging circuit connected in parallel to the capacitor, the terminal voltage of the capacitor being supplied as a reset signal to the reset terminal of the microcomputer. Features a microcomputer reset circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3761385U JPH0426902Y2 (en) | 1985-03-15 | 1985-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3761385U JPH0426902Y2 (en) | 1985-03-15 | 1985-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61155927U true JPS61155927U (en) | 1986-09-27 |
| JPH0426902Y2 JPH0426902Y2 (en) | 1992-06-29 |
Family
ID=30543854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3761385U Expired JPH0426902Y2 (en) | 1985-03-15 | 1985-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0426902Y2 (en) |
-
1985
- 1985-03-15 JP JP3761385U patent/JPH0426902Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426902Y2 (en) | 1992-06-29 |