JPS5622123A - Internal bus forming system for single chip function element - Google Patents
Internal bus forming system for single chip function elementInfo
- Publication number
- JPS5622123A JPS5622123A JP9824879A JP9824879A JPS5622123A JP S5622123 A JPS5622123 A JP S5622123A JP 9824879 A JP9824879 A JP 9824879A JP 9824879 A JP9824879 A JP 9824879A JP S5622123 A JPS5622123 A JP S5622123A
- Authority
- JP
- Japan
- Prior art keywords
- bus
- internal bus
- circuit
- switched
- conduction mode
- 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
Landscapes
- Bus Control (AREA)
- Microcomputers (AREA)
Abstract
PURPOSE: To ensure the highly effective driving with a small-size driving circuit, by dividing the internal bus into several portions through the bus selecting circuit and without increasing the chip area.
CONSTITUTION: A connection is given (as shown by broken lines) between bus selecting circuits 5-1 and 5-2 by microprocessor unit 2, and the internal bus is divided into three portions 3-1, 3-2 and 3-3 each. When the data is transferred between processor 2 and pad 4-1 connected to bus 3-2, circuit 5-1 is switched to the conduction mode by the command of processor 2 to transfer the data to pad 4-1 via only bus 3-2. And in case the data is transferred between processor 2 and pad 4-2, circuit 5-2 is switched to the conduction mode. In this case, the internal bus including the bus selecting circuit which is switched to the conduction mode is isolated from the internal bus including the bus selecting circuit which is not switched to the conduction mode to carry out the data transfer independently.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9824879A JPS5622123A (en) | 1979-08-01 | 1979-08-01 | Internal bus forming system for single chip function element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9824879A JPS5622123A (en) | 1979-08-01 | 1979-08-01 | Internal bus forming system for single chip function element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5622123A true JPS5622123A (en) | 1981-03-02 |
Family
ID=14214646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9824879A Pending JPS5622123A (en) | 1979-08-01 | 1979-08-01 | Internal bus forming system for single chip function element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5622123A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4516105A (en) * | 1981-07-16 | 1985-05-07 | Tokyo Shibaura Denki Kabushiki Kaisha | Metal oxide varistor with non-diffusable electrodes |
JPS63282554A (en) * | 1987-05-14 | 1988-11-18 | Sony Corp | Microcomputer |
JPH0233647A (en) * | 1988-07-25 | 1990-02-02 | Matsushita Electric Ind Co Ltd | Data processor |
JPH0239232A (en) * | 1988-07-28 | 1990-02-08 | Hitachi Ltd | Data processor |
JPH0340162A (en) * | 1989-07-07 | 1991-02-20 | Fujitsu Ltd | One-chip microcomputer |
JPH0348356A (en) * | 1989-04-18 | 1991-03-01 | Mitsubishi Electric Corp | Bus circuit |
JPH0394356A (en) * | 1989-04-17 | 1991-04-19 | V M Technol Kk | Internal bus connecting structure for microprocessor |
JPH0417050A (en) * | 1990-05-10 | 1992-01-21 | Mitsubishi Electric Corp | One-chip microcomputer |
-
1979
- 1979-08-01 JP JP9824879A patent/JPS5622123A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4516105A (en) * | 1981-07-16 | 1985-05-07 | Tokyo Shibaura Denki Kabushiki Kaisha | Metal oxide varistor with non-diffusable electrodes |
JPS63282554A (en) * | 1987-05-14 | 1988-11-18 | Sony Corp | Microcomputer |
JPH0233647A (en) * | 1988-07-25 | 1990-02-02 | Matsushita Electric Ind Co Ltd | Data processor |
JPH0239232A (en) * | 1988-07-28 | 1990-02-08 | Hitachi Ltd | Data processor |
JPH0394356A (en) * | 1989-04-17 | 1991-04-19 | V M Technol Kk | Internal bus connecting structure for microprocessor |
JPH0348356A (en) * | 1989-04-18 | 1991-03-01 | Mitsubishi Electric Corp | Bus circuit |
JPH0340162A (en) * | 1989-07-07 | 1991-02-20 | Fujitsu Ltd | One-chip microcomputer |
JPH0417050A (en) * | 1990-05-10 | 1992-01-21 | Mitsubishi Electric Corp | One-chip microcomputer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES481514A1 (en) | Input/output data controller in a data processing system. | |
JPS5622123A (en) | Internal bus forming system for single chip function element | |
JPS5717014A (en) | Numerical controller | |
JPS5622160A (en) | Data processing system having additional processor | |
JPS55121566A (en) | Information processor | |
JPS52124829A (en) | Common buss control circuit | |
JPS5439549A (en) | Multiple processor | |
JPS5593235A (en) | Integrated circuit | |
JPS55121521A (en) | Data bus control system | |
JPS5697121A (en) | Bus control system | |
JPS5430756A (en) | Computer system | |
JPS5450247A (en) | Interrupt control system | |
JPS5563423A (en) | Data transfer system | |
JPS5627429A (en) | Bus control system | |
JPS6432363A (en) | Memory device controller | |
JPS55131844A (en) | Communication controller | |
JPS5299737A (en) | Multi computer control system | |
JPS5741725A (en) | Logical circuit system | |
JPS5367302A (en) | Dispersion control type electronic exchange | |
JPS5629732A (en) | Bus control system | |
JPS5394836A (en) | Data process system | |
TW344052B (en) | Flexible interrupt system for an integrated circuit | |
JPS5587249A (en) | Diagnostic system for data transfer unit | |
JPS5690317A (en) | Central processor equipment having extension data channel device | |
JPS57212548A (en) | Interruption system |