JPS6295439U - - Google Patents
Info
- Publication number
- JPS6295439U JPS6295439U JP18551085U JP18551085U JPS6295439U JP S6295439 U JPS6295439 U JP S6295439U JP 18551085 U JP18551085 U JP 18551085U JP 18551085 U JP18551085 U JP 18551085U JP S6295439 U JPS6295439 U JP S6295439U
- Authority
- JP
- Japan
- Prior art keywords
- switch means
- power supply
- detection signal
- specific circuit
- switch
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Electronic Switches (AREA)
- Semiconductor Integrated Circuits (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は本実施例の動作を説明するための電圧波
形図、第３図は一般的な内部回路の回路図、第４
図は従来技術を示すブロツク図である。
１……電源端子、２……接地点、３，７，１５
……ＰチヤンネルＦＥＴ、４，８，１６……Ｎチ
ヤンネルＦＥＴ、５……入力端子、６……出力端
子、９……リセツト回路、１０……リセツト入力
端子、１１……定電圧検出回路、１２……アナロ
グスイツチ、１３……基準電圧発生回路、１４…
…電圧比較回路、１７……電源電圧波形、１８…
…内部回路へ加えられる電圧波形、Ｒ……基準電
圧。
FIG. 1 is a block diagram showing an embodiment of the present invention.
Fig. 2 is a voltage waveform diagram for explaining the operation of this embodiment, Fig. 3 is a circuit diagram of a general internal circuit, and Fig. 4 is a circuit diagram of a general internal circuit.
The figure is a block diagram showing the prior art. 1...Power terminal, 2...Grounding point, 3, 7, 15
... P channel FET, 4, 8, 16 ... N channel FET, 5 ... input terminal, 6 ... output terminal, 9 ... reset circuit, 10 ... reset input terminal, 11 ... constant voltage detection circuit, 12...Analog switch, 13...Reference voltage generation circuit, 14...
...Voltage comparison circuit, 17...Power supply voltage waveform, 18...
...Voltage waveform applied to the internal circuit, R...Reference voltage.
Claims (1)
て検出信号を送出する比較手段と、 前記検出信号に応答して閉成状態から開放状態
に遷移する第１スイツチ手段と、 前記検出信号に応答して開放状態から閉相成状
態に遷移する第２スイツチ手段とを備え、 前記第１スイツチ手段を介して特定回路と電源
とを接続すると共に、前記検出信号の送出時には
前記第２スイツチ手段を介して該特定回路の電源
ラインを所定電位に固定するようにしたことを特
徴とする半導体集積回路用保護装置。[Claims for Utility Model Registration] Comparison means for detecting that the power supply voltage has fallen below a predetermined value and transmitting a detection signal; and a first switch that transitions from a closed state to an open state in response to the detection signal. means, and a second switch means for transitioning from an open state to a closed phase formation state in response to the detection signal, connecting the specific circuit and the power source via the first switch means, and connecting the specific circuit to the power supply via the first switch means, A protection device for a semiconductor integrated circuit, characterized in that a power supply line of the specific circuit is fixed at a predetermined potential via the second switch means during transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18551085U JPS6295439U (en) | 1985-12-03 | 1985-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18551085U JPS6295439U (en) | 1985-12-03 | 1985-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295439U true JPS6295439U (en) | 1987-06-18 |
Family
ID=31134204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18551085U Pending JPS6295439U (en) | 1985-12-03 | 1985-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295439U (en) |
-
1985
- 1985-12-03 JP JP18551085U patent/JPS6295439U/ja active Pending
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