JPS54124929A - Timer unit - Google Patents
Timer unitInfo
- Publication number
- JPS54124929A JPS54124929A JP3341478A JP3341478A JPS54124929A JP S54124929 A JPS54124929 A JP S54124929A JP 3341478 A JP3341478 A JP 3341478A JP 3341478 A JP3341478 A JP 3341478A JP S54124929 A JPS54124929 A JP S54124929A
- Authority
- JP
- Japan
- Prior art keywords
- register
- counter ctr
- program
- clock
- microprogram
- 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
Landscapes
- Electronic Switches (AREA)
- Electric Clocks (AREA)
Abstract
PURPOSE: To obtain a miniature unit which can clock a long period by simple constitution and perform a complex process by a program, by combining the timer of hardware with that of software.
CONSTITUTION: Counter CTR and carry register CR.RG as hard ware are both provided, and counter CTR is actuated and stopped by a microprogram. It is made possible to vary the period of clock CLK inputted to counter CTR by a microprogram. Once carry CR is outputted to counter CTR, register CR.RG is set, counter CTR continues its count-up operation even during this setting, and the program is informed that register CR.RG has been set. The contents of this register CR.RG are referred to by the program, thereby making it possible to clock time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53033414A JPS6024968B2 (en) | 1978-03-22 | 1978-03-22 | timer device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53033414A JPS6024968B2 (en) | 1978-03-22 | 1978-03-22 | timer device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54124929A true JPS54124929A (en) | 1979-09-28 |
JPS6024968B2 JPS6024968B2 (en) | 1985-06-15 |
Family
ID=12385911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53033414A Expired JPS6024968B2 (en) | 1978-03-22 | 1978-03-22 | timer device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6024968B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58146944A (en) * | 1982-02-26 | 1983-09-01 | Toshiba Corp | Processor for information |
JPS58214951A (en) * | 1982-06-08 | 1983-12-14 | Fujitsu Ten Ltd | Time counting system using free running counter |
JPS59161716A (en) * | 1983-03-04 | 1984-09-12 | Nec Corp | Timer control system of information processor |
JPS62266624A (en) * | 1986-05-14 | 1987-11-19 | Nec Corp | Counter device |
JPH02193097A (en) * | 1989-10-30 | 1990-07-30 | Seiko Epson Corp | Real time clock |
-
1978
- 1978-03-22 JP JP53033414A patent/JPS6024968B2/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58146944A (en) * | 1982-02-26 | 1983-09-01 | Toshiba Corp | Processor for information |
JPS58214951A (en) * | 1982-06-08 | 1983-12-14 | Fujitsu Ten Ltd | Time counting system using free running counter |
JPS59161716A (en) * | 1983-03-04 | 1984-09-12 | Nec Corp | Timer control system of information processor |
JPS62266624A (en) * | 1986-05-14 | 1987-11-19 | Nec Corp | Counter device |
JPH0531775B2 (en) * | 1986-05-14 | 1993-05-13 | Nippon Electric Co | |
JPH02193097A (en) * | 1989-10-30 | 1990-07-30 | Seiko Epson Corp | Real time clock |
Also Published As
Publication number | Publication date |
---|---|
JPS6024968B2 (en) | 1985-06-15 |
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