JPS5663625A - Timer circuit - Google Patents
Timer circuitInfo
- Publication number
- JPS5663625A JPS5663625A JP13775379A JP13775379A JPS5663625A JP S5663625 A JPS5663625 A JP S5663625A JP 13775379 A JP13775379 A JP 13775379A JP 13775379 A JP13775379 A JP 13775379A JP S5663625 A JPS5663625 A JP S5663625A
- Authority
- JP
- Japan
- Prior art keywords
- control input
- timer counting
- counting counter
- inhibited
- circuit
- 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
Abstract
PURPOSE: To easily execute the external read and write control, by inhibiting the passing of a count signal when a control input is inhibited, and outputting the number of pulses which have been halted within the set period, after the control input have been returned.
CONSTITUTION: The synchronizing FF7 is provided between the frequency dividing circuit 2 which divides an output of the reference oscillating circuit 1, and the timer counting counter 3, the output of this synchronizing FF7 selectively inhibits a count signal by a control input in the inhibitive circuit 8, also when the control input is not inhibited by the correcting circuit 9, the count signal is sent to the timer counting counter 3, and also when it is inhibited, it is inhibited to transfer the counter signal to the timer counting counter 3. Furthermore, since it has become possible to output to the timer counting counter 3 the number of pulses whose counting has been stopped in the inhibitive circuit 8 within the prescribed set period, after the control input has been returned; not only a data of the timer counting counter 3 can be read exactly but also the data can be exactly written to the timer counting counter 3.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54137753A JPS5944649B2 (en) | 1979-10-26 | 1979-10-26 | timer circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54137753A JPS5944649B2 (en) | 1979-10-26 | 1979-10-26 | timer circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5663625A true JPS5663625A (en) | 1981-05-30 |
JPS5944649B2 JPS5944649B2 (en) | 1984-10-31 |
Family
ID=15206022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54137753A Expired JPS5944649B2 (en) | 1979-10-26 | 1979-10-26 | timer circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5944649B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6267603A (en) * | 1985-09-19 | 1987-03-27 | Nec Corp | Pulse measuring instrument |
JPS62131303A (en) * | 1985-12-04 | 1987-06-13 | Nec Corp | Pulse counting device |
-
1979
- 1979-10-26 JP JP54137753A patent/JPS5944649B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6267603A (en) * | 1985-09-19 | 1987-03-27 | Nec Corp | Pulse measuring instrument |
JPS62131303A (en) * | 1985-12-04 | 1987-06-13 | Nec Corp | Pulse counting device |
Also Published As
Publication number | Publication date |
---|---|
JPS5944649B2 (en) | 1984-10-31 |
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