JPH031646U - - Google Patents
Info
- Publication number
- JPH031646U JPH031646U JP5766189U JP5766189U JPH031646U JP H031646 U JPH031646 U JP H031646U JP 5766189 U JP5766189 U JP 5766189U JP 5766189 U JP5766189 U JP 5766189U JP H031646 U JPH031646 U JP H031646U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- diode
- data retention
- retention function
- voltage
- 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
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Description
第１図は、この考案に係るＩＣ用電源回路の一
実施例の回路図、第２図及び第３図は従来例の回
路図である。
ＩＣ１……データ保持機能を必要とするＩＣ、
ＩＣ２……データ保持機能を必要としないＩＣ、
Ａ１，Ａ２，Ａ３……電源回路、Ｄ１，Ｄ２，Ｄ
３……ダイオード、ＶＢ……バツクアツプ電源（
電圧）、ＶＭ１，ＶＭ２……供給電源（電圧）。
FIG. 1 is a circuit diagram of an embodiment of an IC power supply circuit according to this invention, and FIGS. 2 and 3 are circuit diagrams of a conventional example. IC 1 ...IC that requires data retention function,
IC 2 ...IC that does not require data retention function,
A 1 , A 2 , A 3 ... power supply circuit, D 1 , D 2 , D
3 ...Diode, VB...backup power supply (
voltage), VM 1 , VM 2 ...supply power (voltage).
Claims (1)
よりダイオードＤ２の順電圧ＶＦだけ高い電圧を
供給する他方の電源ＶＭ２に、データ保持機能を
必要とするＩＣをそれぞれ順方向のダイオードＤ
１，Ｄ２を介して接続するとともに、データ保持
機能を必要としないＩＣは順方向のダイオードＤ
３を介して前記他方の供給電源ＶＭ２に接続する
とともに、前記一方の供給電源ＶＭ１に接続して
成るＩＣ用電源回路。 Backup power supply VB and one supply power supply VM 1
The other power supply VM2 , which supplies a voltage higher than the forward voltage VF of diode D2 , connects an IC that requires a data retention function to the forward diode D2.
1 , D2 , and ICs that do not require a data retention function are connected via a forward diode D.
The IC power supply circuit is connected to the other power supply VM 2 via the power source VM 3 and to the one power supply VM 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5766189U JPH031646U (en) | 1989-05-18 | 1989-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5766189U JPH031646U (en) | 1989-05-18 | 1989-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031646U true JPH031646U (en) | 1991-01-09 |
Family
ID=31582573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5766189U Pending JPH031646U (en) | 1989-05-18 | 1989-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031646U (en) |
-
1989
- 1989-05-18 JP JP5766189U patent/JPH031646U/ja active Pending
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