JPH0330162U - - Google Patents
Info
- Publication number
- JPH0330162U JPH0330162U JP8961889U JP8961889U JPH0330162U JP H0330162 U JPH0330162 U JP H0330162U JP 8961889 U JP8961889 U JP 8961889U JP 8961889 U JP8961889 U JP 8961889U JP H0330162 U JPH0330162 U JP H0330162U
- Authority
- JP
- Japan
- Prior art keywords
- port
- input
- section
- output
- main control
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Input From Keyboards Or The Like (AREA)
- Microcomputers (AREA)
Description
第１図は本考案の第１の実施例を示す回路ブロ
ツク図、第２図は同実施例の機能ブロツク図、第
３図は同実施例のゲート部の論理回路、第４図は
他の実施例を示す回路ブロツク図、第５図は従来
例を示す図、第６図はそのタイミングチヤートで
ある。
１，４……マイコン、１００……メイン制御部
、１０１及び２００……出力制御部及びゲート部
（切換制御手段）。
Fig. 1 is a circuit block diagram showing a first embodiment of the present invention, Fig. 2 is a functional block diagram of the same embodiment, Fig. 3 is a logic circuit of a gate section of the same embodiment, and Fig. 4 is a circuit block diagram of another embodiment. FIG. 5 is a circuit block diagram showing an embodiment, FIG. 5 is a diagram showing a conventional example, and FIG. 6 is a timing chart thereof. 1, 4... Microcomputer, 100... Main control section, 101 and 200... Output control section and gate section (switching control means).
Claims (1)
ート部と、メイン制御部からの出力信号の有無に
応じて前記ポート部を出力ポート或いは入力ポー
トに切換制御する切換制御手段とを有してなるマ
イクロコンピユータの入出力回路。 It has a port section that can input and output signals to and from the main control section, and switching control means that controls switching of the port section to an output port or an input port depending on the presence or absence of an output signal from the main control section. The input/output circuit of a microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989089618U JPH0738996Y2 (en) | 1989-07-28 | 1989-07-28 | Input / output circuit of microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989089618U JPH0738996Y2 (en) | 1989-07-28 | 1989-07-28 | Input / output circuit of microcomputer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330162U true JPH0330162U (en) | 1991-03-25 |
| JPH0738996Y2 JPH0738996Y2 (en) | 1995-09-06 |
Family
ID=31639191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989089618U Expired - Lifetime JPH0738996Y2 (en) | 1989-07-28 | 1989-07-28 | Input / output circuit of microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738996Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6329872A (en) * | 1986-07-23 | 1988-02-08 | Nec Corp | Microcomputer |
-
1989
- 1989-07-28 JP JP1989089618U patent/JPH0738996Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6329872A (en) * | 1986-07-23 | 1988-02-08 | Nec Corp | Microcomputer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738996Y2 (en) | 1995-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |