JPS5791029A - Power-on reset circuit - Google Patents
Power-on reset circuitInfo
- Publication number
- JPS5791029A JPS5791029A JP16716080A JP16716080A JPS5791029A JP S5791029 A JPS5791029 A JP S5791029A JP 16716080 A JP16716080 A JP 16716080A JP 16716080 A JP16716080 A JP 16716080A JP S5791029 A JPS5791029 A JP S5791029A
- Authority
- JP
- Japan
- Prior art keywords
- potential
- time
- delay circuit
- capacitance
- capacitor
- 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
- H03K17/223—Modifications for ensuring a predetermined initial state when the supply voltage has been applied in field-effect transistor switches
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To decrease the capacitance of a capacitor in a delay circuit, by increasing a threshold value voltage of an MOS transistor (TR) of a delay circuit than that in a circuit connected to the delay circuit. CONSTITUTION:When a power supply voltage exceeds a voltage VTPH of a P- MOS TR17 at a time t2, since the TR17 turns on, a potential Vh at point H is rapidly increased because the capacitance of a capacitor 18 is small, and it is the same potential as the power supply voltage. A potential Vi at pointIis at zero potential immediately after the time t2 in response to it to be ''L'' level. Thus, the potential Vi at the pointIbeing the output of the inverter circuit 20 generates pulses at ''H'' level between the time t1-t2, allowing to reset a D type FF31 surely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16716080A JPS5791029A (en) | 1980-11-27 | 1980-11-27 | Power-on reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16716080A JPS5791029A (en) | 1980-11-27 | 1980-11-27 | Power-on reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5791029A true JPS5791029A (en) | 1982-06-07 |
Family
ID=15844525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16716080A Pending JPS5791029A (en) | 1980-11-27 | 1980-11-27 | Power-on reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5791029A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123167A (en) * | 1984-11-20 | 1986-06-11 | Fujitsu Ltd | Semiconductor integrated circuit |
| US5027006A (en) * | 1988-12-22 | 1991-06-25 | Sgs-Thomson Microelectronics S.A. | Circuit for detecting a supply voltage drop and for resetting an initialization circuit |
| JPH0593127U (en) * | 1992-05-13 | 1993-12-17 | 株式会社ケンウッド | Memory reset circuit |
| US5463336A (en) * | 1994-01-27 | 1995-10-31 | Rockwell International Corporation | Supply sensing power-on reset circuit |
| JPH09153777A (en) * | 1995-11-28 | 1997-06-10 | Mitsubishi Electric Corp | Semiconductor device and comparator circuit |
-
1980
- 1980-11-27 JP JP16716080A patent/JPS5791029A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123167A (en) * | 1984-11-20 | 1986-06-11 | Fujitsu Ltd | Semiconductor integrated circuit |
| JPH0656879B2 (en) * | 1984-11-20 | 1994-07-27 | 富士通株式会社 | Semiconductor integrated circuit |
| US5027006A (en) * | 1988-12-22 | 1991-06-25 | Sgs-Thomson Microelectronics S.A. | Circuit for detecting a supply voltage drop and for resetting an initialization circuit |
| JPH0593127U (en) * | 1992-05-13 | 1993-12-17 | 株式会社ケンウッド | Memory reset circuit |
| US5463336A (en) * | 1994-01-27 | 1995-10-31 | Rockwell International Corporation | Supply sensing power-on reset circuit |
| JPH09153777A (en) * | 1995-11-28 | 1997-06-10 | Mitsubishi Electric Corp | Semiconductor device and comparator circuit |
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