JPS5748831A - Power-on reset signal generating circuit - Google Patents
Power-on reset signal generating circuitInfo
- Publication number
- JPS5748831A JPS5748831A JP12428380A JP12428380A JPS5748831A JP S5748831 A JPS5748831 A JP S5748831A JP 12428380 A JP12428380 A JP 12428380A JP 12428380 A JP12428380 A JP 12428380A JP S5748831 A JPS5748831 A JP S5748831A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- time
- reset signal
- output
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To reset a power-on-reset signal surely with a very simple constitution, by taking an output of an inverter circuit as a reset signal. CONSTITUTION:When a power switch 2 is applied at a time t0, a voltage A of a circuit power supply line rises slowly. Thus, a voltage at a connecting point B rises in the same way as a power supply voltage VDD at a prescribed period after the turning on of the switch 2, and the voltage B at a time t1 when transistor (TRs) Q1-Q3 turn completely on is three times or more each threshold voltage VTN of the TRs Q1-Q3. Thus, at the boundary of the time t1, the series impedance of the TRs Q1-Q3 is decreased and the voltage B is pulled down. But, when the voltage B is within the logical threshold value VTL of an inverter 31 at a time t2, the output of the output of the inverters 31-33 is sequentially at high, low and high level, and the T is a reset signal for a time t4 when the output E of the inverter 3 is at high level and an external circuit 1 is reset for the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12428380A JPS5748831A (en) | 1980-09-08 | 1980-09-08 | Power-on reset signal generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12428380A JPS5748831A (en) | 1980-09-08 | 1980-09-08 | Power-on reset signal generating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5748831A true JPS5748831A (en) | 1982-03-20 |
Family
ID=14881498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12428380A Pending JPS5748831A (en) | 1980-09-08 | 1980-09-08 | Power-on reset signal generating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5748831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165859A (en) * | 1982-03-29 | 1983-09-30 | 旭化成株式会社 | Adsorbing material for purifying body liquid, production thereof and adsorbing apparatus for purifying body |
| JPS60212977A (en) * | 1984-04-03 | 1985-10-25 | イ−・アイ・デユポン・ド・ネモア−ス・アンド・コンパニ− | Insulating material displacing connector terminal |
| JPH0472554U (en) * | 1990-11-02 | 1992-06-25 | ||
| EP1078465A1 (en) * | 1998-05-20 | 2001-02-28 | Maxim Integrated Products, Inc. | Zero dc current power-on reset circuit |
-
1980
- 1980-09-08 JP JP12428380A patent/JPS5748831A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58165859A (en) * | 1982-03-29 | 1983-09-30 | 旭化成株式会社 | Adsorbing material for purifying body liquid, production thereof and adsorbing apparatus for purifying body |
| JPH0135670B2 (en) * | 1982-03-29 | 1989-07-26 | Asahi Chemical Ind | |
| JPS60212977A (en) * | 1984-04-03 | 1985-10-25 | イ−・アイ・デユポン・ド・ネモア−ス・アンド・コンパニ− | Insulating material displacing connector terminal |
| JPS6343868B2 (en) * | 1984-04-03 | 1988-09-01 | Ii Ai Deyuhon De Nimoasu Ando Co | |
| JPH0472554U (en) * | 1990-11-02 | 1992-06-25 | ||
| EP1078465A1 (en) * | 1998-05-20 | 2001-02-28 | Maxim Integrated Products, Inc. | Zero dc current power-on reset circuit |
| EP1078465A4 (en) * | 1998-05-20 | 2001-05-30 | Maxim Integrated Products | Zero dc current power-on reset circuit |
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