JPS5590882A - Integrated circuit for electronic clock - Google Patents
Integrated circuit for electronic clockInfo
- Publication number
- JPS5590882A JPS5590882A JP16198078A JP16198078A JPS5590882A JP S5590882 A JPS5590882 A JP S5590882A JP 16198078 A JP16198078 A JP 16198078A JP 16198078 A JP16198078 A JP 16198078A JP S5590882 A JPS5590882 A JP S5590882A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- battery
- motor driving
- circuit
- integrated 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
Landscapes
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To provide an integrated circuit for electronic clocks, which can be operated by both a lithium battery and a silver oxide battery, by furnishing the integrated circuit with an ability to sense the kind of batteries and change the waveform of a pulse motor driving pulse in accordance with the kind sensed of the battery. CONSTITUTION:When a silver oxide battery is connected with terminals 1a, 1b, a regulator 3 generates a constant voltage of 1V, which is applied to each circuit in a clock and which is also inputted into an input terminal D of FF4. At this time, the threshold voltage of FF4 is 0.75V so that an output therefrom is zero. In a pulse motor driving pulse generating circuit 7, a pulse motor driving pulse of 1 second cycle and a constant pulse width is formed, which is shifted at level shifters 18, 19 to the battery voltage level through a waveform conversion circuit 13 to drive a pulse motor 22. When a lithium battery is connected with the terminals 1a, 1b, the threshold voltage of the FF4 is 1.5V so that an output therefrom is one. As a result, a motor driving pulse is interrupted 13 due to a pulse of 4096Hz from a terminal F3 of a frequency dividing circuit 6 so that the pulse motor 22 is driven accurately in the same manner as in the case where a silver oxide battery is used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16198078A JPS5590882A (en) | 1978-12-29 | 1978-12-29 | Integrated circuit for electronic clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16198078A JPS5590882A (en) | 1978-12-29 | 1978-12-29 | Integrated circuit for electronic clock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5590882A true JPS5590882A (en) | 1980-07-09 |
JPS625306B2 JPS625306B2 (en) | 1987-02-04 |
Family
ID=15745728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16198078A Granted JPS5590882A (en) | 1978-12-29 | 1978-12-29 | Integrated circuit for electronic clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5590882A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62238484A (en) * | 1986-04-10 | 1987-10-19 | Seiko Instr & Electronics Ltd | Electronic timepiece |
JPS62267688A (en) * | 1986-05-15 | 1987-11-20 | Seikosha Co Ltd | Integrated circuit for battery operated timepiece |
JPS6367986U (en) * | 1986-10-22 | 1988-05-07 | ||
JPS6372568U (en) * | 1986-10-29 | 1988-05-14 | ||
JP2002125328A (en) * | 2000-07-20 | 2002-04-26 | Agilent Technol Inc | System and method for charging capacitor using current waveform of fixed frequency |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0231360U (en) * | 1988-08-18 | 1990-02-27 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49102738U (en) * | 1972-12-22 | 1974-09-04 | ||
JPS5387768A (en) * | 1977-01-13 | 1978-08-02 | Citizen Watch Co Ltd | Pulse motor driving circuit for watch |
-
1978
- 1978-12-29 JP JP16198078A patent/JPS5590882A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49102738U (en) * | 1972-12-22 | 1974-09-04 | ||
JPS5387768A (en) * | 1977-01-13 | 1978-08-02 | Citizen Watch Co Ltd | Pulse motor driving circuit for watch |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62238484A (en) * | 1986-04-10 | 1987-10-19 | Seiko Instr & Electronics Ltd | Electronic timepiece |
JPS62267688A (en) * | 1986-05-15 | 1987-11-20 | Seikosha Co Ltd | Integrated circuit for battery operated timepiece |
JPS6367986U (en) * | 1986-10-22 | 1988-05-07 | ||
JPH0543420Y2 (en) * | 1986-10-22 | 1993-11-01 | ||
JPS6372568U (en) * | 1986-10-29 | 1988-05-14 | ||
JP2002125328A (en) * | 2000-07-20 | 2002-04-26 | Agilent Technol Inc | System and method for charging capacitor using current waveform of fixed frequency |
Also Published As
Publication number | Publication date |
---|---|
JPS625306B2 (en) | 1987-02-04 |
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