JPS6488724A - Semiconductor integrated device - Google Patents
Semiconductor integrated deviceInfo
- Publication number
- JPS6488724A JPS6488724A JP24390087A JP24390087A JPS6488724A JP S6488724 A JPS6488724 A JP S6488724A JP 24390087 A JP24390087 A JP 24390087A JP 24390087 A JP24390087 A JP 24390087A JP S6488724 A JPS6488724 A JP S6488724A
- Authority
- JP
- Japan
- Prior art keywords
- constant voltage
- power supply
- voltage generating
- generating circuit
- level
- 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
Abstract
PURPOSE:To reduce the power consumption of 1st and 2nd constant voltage generating circuits and also to quickly secure a prescribed constant voltage at the application of a power supply by using a MOS transistor whose gate is connected to the output point of the 1st constant voltage generating circuit together with the drain connected to the power supply and the source connected to the output point of the 2nd constant voltage generating circuit respectively. CONSTITUTION:The difference between 1st and 2nd constant voltage levels is increased between time points 0 and t1. When this difference is equal to VT, an enhancement type MOS transistor TR5 goes to a conducting status. The impedance is set under such conditions so that the load capacity 6 is quick ly charged. Thus the 2nd constant voltage level is kept lower than the 1st constant voltage level by VT at and after the time point t1 and reaches a pre scribed level at a time point t2. Thus the power consumption is reduced and also a prescribed constant voltage level is quickly secured at the application of the power supply by setting the TR5 between the power supply and the 2nd constant voltage generating circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62243900A JP2544157B2 (en) | 1987-09-30 | 1987-09-30 | Semiconductor integrated circuit device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62243900A JP2544157B2 (en) | 1987-09-30 | 1987-09-30 | Semiconductor integrated circuit device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6488724A true JPS6488724A (en) | 1989-04-03 |
JP2544157B2 JP2544157B2 (en) | 1996-10-16 |
Family
ID=17110668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62243900A Expired - Lifetime JP2544157B2 (en) | 1987-09-30 | 1987-09-30 | Semiconductor integrated circuit device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2544157B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011118602A (en) * | 2009-12-02 | 2011-06-16 | Renesas Electronics Corp | Semiconductor device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914287A (en) * | 1972-05-22 | 1974-02-07 | ||
JPS5836411U (en) * | 1981-09-02 | 1983-03-09 | 株式会社東芝 | constant voltage power supply |
-
1987
- 1987-09-30 JP JP62243900A patent/JP2544157B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914287A (en) * | 1972-05-22 | 1974-02-07 | ||
JPS5836411U (en) * | 1981-09-02 | 1983-03-09 | 株式会社東芝 | constant voltage power supply |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011118602A (en) * | 2009-12-02 | 2011-06-16 | Renesas Electronics Corp | Semiconductor device |
Also Published As
Publication number | Publication date |
---|---|
JP2544157B2 (en) | 1996-10-16 |
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