JPH044331U - - Google Patents
Info
- Publication number
- JPH044331U JPH044331U JP4622890U JP4622890U JPH044331U JP H044331 U JPH044331 U JP H044331U JP 4622890 U JP4622890 U JP 4622890U JP 4622890 U JP4622890 U JP 4622890U JP H044331 U JPH044331 U JP H044331U
- Authority
- JP
- Japan
- Prior art keywords
- input
- output
- circuit
- microcomputer
- switching
- 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
- Microcomputers (AREA)
- Information Transfer Systems (AREA)
Description
図面は本考案のマイクロコンピユータの入出力
回路を示す図である。
１−１〜１−ｎ…集積回路、２…マイクロコン
ピユータ、３−１〜３−ｎ，６−１〜６−ｎ…出
力端子、４−１〜４−ｎ，５−１〜５−ｎ…入力
端子、９…シリアル入出力回路、１０…切換回路
、１４…切換制御回路。
The drawing is a diagram showing an input/output circuit of a microcomputer according to the present invention. 1-1 to 1- n ... integrated circuit, 2... microcomputer, 3-1 to 3- n , 6-1 to 6- n ... output terminal, 4-1 to 4- n , 5-1 to 5- n ...Input terminal, 9...Serial input/output circuit, 10...Switching circuit, 14...Switching control circuit.
Claims (1)
て接続される複数の入出力端子を有し、何れか１
つの集積回路との間で入出力データのシリアル通
信を行うマイクロコンピユータにおいて、 前記複数の集積回路との間で入出力データのシ
リアル通信を行うためのシリアル入出力回路と、 前記マイクロコンピユータの何れかの入出力端
子と前記シリアル入出力回路とを切換接続する切
換回路と、 前記切換回路による切換接続を制御するための
切換制御回路と、 を備えたことを特徴とするマイクロコンピユータ
の入出力回路。 (2) 切換回路は、マイクロコンピユータの複数
の各入出力端子とシリアル入出力回路とを接続又
は遮断する複数のゲート回路を有し、切換制御回
路は、前記マイクロコンピユータの何れかの入出
力端子と前記シリアル入出力回路とを接続するゲ
ート回路のゲートを開くことを特徴とする請求項
(1)記載のマイクロコンピユータの入出力回路。[Claims for Utility Model Registration] (1) Having a plurality of input/output terminals each independently connected to the input/output terminals of a plurality of integrated circuits, any one of which
A microcomputer that serially communicates input/output data with one integrated circuit, the microcomputer comprising: a serial input/output circuit for serially communicating input/output data with the plurality of integrated circuits; and one of the microcomputers. An input/output circuit for a microcomputer, comprising: a switching circuit for switching and connecting the input/output terminal of the input/output terminal and the serial input/output circuit; and a switching control circuit for controlling switching connection by the switching circuit. (2) The switching circuit has a plurality of gate circuits that connect or disconnect each of the plurality of input/output terminals of the microcomputer and the serial input/output circuit, and the switching control circuit has a plurality of gate circuits that connect or disconnect each of the plurality of input/output terminals of the microcomputer and the serial input/output circuit; and the serial input/output circuit are opened.
(1) Input/output circuit of the microcomputer described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4622890U JPH044331U (en) | 1990-04-26 | 1990-04-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4622890U JPH044331U (en) | 1990-04-26 | 1990-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH044331U true JPH044331U (en) | 1992-01-16 |
Family
ID=31561125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4622890U Pending JPH044331U (en) | 1990-04-26 | 1990-04-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51159495U (en) * | 1975-06-13 | 1976-12-18 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0232162B2 (en) * | 1981-06-25 | 1990-07-18 | Goodrich Co B F |
-
1990
- 1990-04-26 JP JP4622890U patent/JPH044331U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0232162B2 (en) * | 1981-06-25 | 1990-07-18 | Goodrich Co B F |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51159495U (en) * | 1975-06-13 | 1976-12-18 |
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