JPS6478520A - Power-on reset circuit - Google Patents
Power-on reset circuitInfo
- Publication number
- JPS6478520A JPS6478520A JP23561087A JP23561087A JPS6478520A JP S6478520 A JPS6478520 A JP S6478520A JP 23561087 A JP23561087 A JP 23561087A JP 23561087 A JP23561087 A JP 23561087A JP S6478520 A JPS6478520 A JP S6478520A
- Authority
- JP
- Japan
- Prior art keywords
- threshold voltage
- discharge circuit
- comparatively
- capacitor
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To stably generate a reset signal by providing a comparatively low threshold voltage and discharging a capacitor via a discharge circuit of a comparatively high resistance. CONSTITUTION:A discharge circuit 5 consists of two N-channel MOS transistors(TRs) 6, 7 having a prescribed threshold value. Moreover, a high resistance N-channel MOS TR 8 forms the discharge circuit and its threshold voltage is set to a value lower than the threshold voltage of the charging circuit 5. For example, the charging circuit 5 having a comparatively higher threshold voltage is turned off to interrupt the charging path to the capacitor 1 and the discharge circuit having a comparatively lower threshold voltage is turned off with a slight delay, then the electric charge charged in the capacitor 1 is discharged sufficiently by the discharge circuit during this time. Thus, the reset signal is generated stably.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23561087A JPS6478520A (en) | 1987-09-19 | 1987-09-19 | Power-on reset circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23561087A JPS6478520A (en) | 1987-09-19 | 1987-09-19 | Power-on reset circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6478520A true JPS6478520A (en) | 1989-03-24 |
Family
ID=16988559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23561087A Pending JPS6478520A (en) | 1987-09-19 | 1987-09-19 | Power-on reset circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6478520A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04361422A (en) * | 1991-06-10 | 1992-12-15 | Nec Ic Microcomput Syst Ltd | Discharge circuit |
US5331209A (en) * | 1992-02-28 | 1994-07-19 | Oki Electric Industry Co., Ltd. | Auto-reset circuit with improved testability |
JPH11163701A (en) * | 1997-09-30 | 1999-06-18 | Siemens Ag | Power-on detection circuit performing extremely quick power-on detection |
DE10134557A1 (en) * | 2001-07-16 | 2003-02-06 | Infineon Technologies Ag | Circuit arrangement and method for discharging at least one circuit node |
KR100452333B1 (en) * | 2002-10-18 | 2004-10-12 | 삼성전자주식회사 | Power up signal generator |
US6812751B2 (en) | 2002-10-15 | 2004-11-02 | Hpl Technologies, Inc. | Low standby current power-on reset circuit |
KR100461976B1 (en) * | 2003-04-30 | 2004-12-17 | 매그나칩 반도체 유한회사 | Power On Reset Circuit |
-
1987
- 1987-09-19 JP JP23561087A patent/JPS6478520A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04361422A (en) * | 1991-06-10 | 1992-12-15 | Nec Ic Microcomput Syst Ltd | Discharge circuit |
US5331209A (en) * | 1992-02-28 | 1994-07-19 | Oki Electric Industry Co., Ltd. | Auto-reset circuit with improved testability |
JPH11163701A (en) * | 1997-09-30 | 1999-06-18 | Siemens Ag | Power-on detection circuit performing extremely quick power-on detection |
DE10134557A1 (en) * | 2001-07-16 | 2003-02-06 | Infineon Technologies Ag | Circuit arrangement and method for discharging at least one circuit node |
DE10134557C2 (en) * | 2001-07-16 | 2003-07-31 | Infineon Technologies Ag | Circuit arrangement and method for discharging at least one circuit node |
US6812751B2 (en) | 2002-10-15 | 2004-11-02 | Hpl Technologies, Inc. | Low standby current power-on reset circuit |
KR100452333B1 (en) * | 2002-10-18 | 2004-10-12 | 삼성전자주식회사 | Power up signal generator |
KR100461976B1 (en) * | 2003-04-30 | 2004-12-17 | 매그나칩 반도체 유한회사 | Power On Reset Circuit |
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