JPH0277747U - - Google Patents
Info
- Publication number
- JPH0277747U JPH0277747U JP1988157951U JP15795188U JPH0277747U JP H0277747 U JPH0277747 U JP H0277747U JP 1988157951 U JP1988157951 U JP 1988157951U JP 15795188 U JP15795188 U JP 15795188U JP H0277747 U JPH0277747 U JP H0277747U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- inverted
- data bus
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Storage Device Security (AREA)
- Microcomputers (AREA)
Description
第１図は本考案の実施例を示すブロツク図、第
２図は第１図の１ビツト分の切換え回路を示す等
価回路、第３図は１ビツト分の切換え回路を示す
第２の等価回路、第４図は従来のブロツク図であ
る。
１……マイクロプロセツサまたはマイクロコン
ピユータ、２……切換え回路、３……外部データ
バス、３１……外部データバス１ビツト、４……
内部データバス、４１……内部データバス１ビツ
ト、５，６，８，９，１３……反転回路、７……
信号選択回路、１０，１１……ＡＮＤ回路、１２
……ＯＲ回路、１４……信号選択用回路、１５…
…バツフアー。
Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is an equivalent circuit showing the switching circuit for 1 bit in Fig. 1, and Fig. 3 is a second equivalent circuit showing the switching circuit for 1 bit. , FIG. 4 is a conventional block diagram. 1... Microprocessor or microcomputer, 2... Switching circuit, 3... External data bus, 31... External data bus 1 bit, 4...
Internal data bus, 41... Internal data bus 1 bit, 5, 6, 8, 9, 13... Inversion circuit, 7...
Signal selection circuit, 10, 11...AND circuit, 12
...OR circuit, 14... Signal selection circuit, 15...
...Batsufua.
Claims (1)
位で反転および非反転に切換えることを可能とす
ることを特徴とするマイクロプロセツサ。 A microprocessor characterized in that it is possible to switch a signal input via a data bus between inverted and non-inverted bit by bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157951U JPH0277747U (en) | 1988-12-02 | 1988-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157951U JPH0277747U (en) | 1988-12-02 | 1988-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277747U true JPH0277747U (en) | 1990-06-14 |
Family
ID=31437842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988157951U Pending JPH0277747U (en) | 1988-12-02 | 1988-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04271396A (en) * | 1991-02-27 | 1992-09-28 | Hitachi Ltd | Digital signal delivery system, digital voice signal processing circuit, and signal converting circuit |
-
1988
- 1988-12-02 JP JP1988157951U patent/JPH0277747U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04271396A (en) * | 1991-02-27 | 1992-09-28 | Hitachi Ltd | Digital signal delivery system, digital voice signal processing circuit, and signal converting circuit |