JPS60166037U - Power supply circuit for microcomputer - Google Patents
Power supply circuit for microcomputerInfo
- Publication number
- JPS60166037U JPS60166037U JP5396984U JP5396984U JPS60166037U JP S60166037 U JPS60166037 U JP S60166037U JP 5396984 U JP5396984 U JP 5396984U JP 5396984 U JP5396984 U JP 5396984U JP S60166037 U JPS60166037 U JP S60166037U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- operational amplifier
- microcomputer
- power supply
- input
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のマイクロコンピュータ用電源回路を示す
図、第２図Ａ、 Ｂは従来例の欠点を説明するためのタ
イミング図、第３図Ａ、 Ｂはこの考案の動部を説明す
るためのタイミング図、第４図はこの考案の一実施例に
係るマイクロコンピュータ用電源回路を示す図、第５図
及び第６図はそれぞれこの考案の他の実施例に係るマイ
クロコンピュータ用電源回路を示す図である。
３１・・・バッテリ、３３・・・安定化電源回路、３４
・・・第１のオペアンプ、３５・・・第２のオペアンプ
、３６・・・リセット回路、３８・・・遅延回路。Figure 1 is a diagram showing a conventional power supply circuit for a microcomputer, Figures 2A and B are timing diagrams to explain the drawbacks of the conventional example, and Figures 3A and B are diagrams to explain the moving parts of this invention. FIG. 4 is a diagram showing a power supply circuit for a microcomputer according to one embodiment of this invention, and FIGS. 5 and 6 respectively show power supply circuits for a microcomputer according to other embodiments of this invention. It is a diagram. 31... Battery, 33... Stabilized power supply circuit, 34
... first operational amplifier, 35 ... second operational amplifier, 36 ... reset circuit, 38 ... delay circuit.
Claims (1)
゛０゛レベル信号を入力させることにより発振機能を停
止させてパワーダウンモードとし、上記■ＤＤ端子に°
“１ルベル信号を入力させて上記パワーダウンモードを
解除させているマイクロコンピュータにおいて、電源電
圧が十端子に入力され、一端子に基準電圧が入力される
第１のオペアンプと、上記第１のオペテンプの出力が十
端子に入力され、一端子に上記基準電圧が入力される第
２のオペアンプとを具備し、上記第１のオペア、ンプの
出力を上記ＶＤＤ端子に、上記第２のオペアンプの出力
を上記「端子に供給することを特徴とするマイクロコン
ピュータ用電源回路。It has a VDD terminal and an ffl terminal. By inputting a "0" level signal to the D terminal, the oscillation function is stopped and the power down mode is set.
"In a microcomputer that releases the power down mode by inputting a 1 level signal, a first operational amplifier to which the power supply voltage is input to ten terminals and a reference voltage to one terminal, and the first operational amplifier described above, a second operational amplifier, the output of which is input to one terminal and the reference voltage is input to one terminal, the output of the first operational amplifier is input to the VDD terminal, and the output of the second operational amplifier is input to the VDD terminal. A power supply circuit for a microcomputer, characterized in that it supplies power to the above-mentioned terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5396984U JPS60166037U (en) | 1984-04-12 | 1984-04-12 | Power supply circuit for microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5396984U JPS60166037U (en) | 1984-04-12 | 1984-04-12 | Power supply circuit for microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60166037U true JPS60166037U (en) | 1985-11-05 |
Family
ID=30575312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5396984U Pending JPS60166037U (en) | 1984-04-12 | 1984-04-12 | Power supply circuit for microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60166037U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290046A (en) * | 1976-01-22 | 1977-07-28 | Nippon Denso Co Ltd | Voltage monitor circuit |
| JPS56147216A (en) * | 1980-04-17 | 1981-11-16 | Nec Corp | Microcomputer system |
-
1984
- 1984-04-12 JP JP5396984U patent/JPS60166037U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5290046A (en) * | 1976-01-22 | 1977-07-28 | Nippon Denso Co Ltd | Voltage monitor circuit |
| JPS56147216A (en) * | 1980-04-17 | 1981-11-16 | Nec Corp | Microcomputer system |
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