JPH02836U - - Google Patents
Info
- Publication number
- JPH02836U JPH02836U JP7840388U JP7840388U JPH02836U JP H02836 U JPH02836 U JP H02836U JP 7840388 U JP7840388 U JP 7840388U JP 7840388 U JP7840388 U JP 7840388U JP H02836 U JPH02836 U JP H02836U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- zener diode
- voltage
- integrated circuit
- high 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Logic Circuits (AREA)
- Power Sources (AREA)
- Electronic Switches (AREA)
Description
図面は本考案の実施例を示す要部電子回路図で
ある。
１…マイクロプロセツサ、４，５，１０…プツ
シユスイツチ、８，９，１１…ツエナーダイオー
ド、Ｐ１，Ｐ２，Ｐ３…端子。
The drawing is a main part electronic circuit diagram showing an embodiment of the present invention. 1... Microprocessor, 4, 5, 10... Push switch, 8, 9, 11... Zener diode, P 1 , P 2 , P 3 ... Terminal.
Claims (1)
えられる端子を有する集積回路において、前記端
子にツエナーダイオードのカソード端子を接続し
、低電圧電位点に前記ツエナーダイオードのアノ
ード端子を接続し、前記ツエナーダイオードのツ
エナー電圧を前記高電圧より高い値に設定したこ
とを特徴とする集積回路の保護回路。 In an integrated circuit having a terminal whose potential can be changed to a high voltage or a low voltage by opening and closing a contact piece, a cathode terminal of a Zener diode is connected to the terminal, an anode terminal of the Zener diode is connected to a low voltage potential point, and the A protection circuit for an integrated circuit, characterized in that the Zener voltage of the Zener diode is set to a higher value than the high voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7840388U JPH02836U (en) | 1988-06-14 | 1988-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7840388U JPH02836U (en) | 1988-06-14 | 1988-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02836U true JPH02836U (en) | 1990-01-05 |
Family
ID=31303328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7840388U Pending JPH02836U (en) | 1988-06-14 | 1988-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02836U (en) |
-
1988
- 1988-06-14 JP JP7840388U patent/JPH02836U/ja active Pending
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