JPS5652426A - Microprocessor unit - Google Patents
Microprocessor unitInfo
- Publication number
- JPS5652426A JPS5652426A JP12831379A JP12831379A JPS5652426A JP S5652426 A JPS5652426 A JP S5652426A JP 12831379 A JP12831379 A JP 12831379A JP 12831379 A JP12831379 A JP 12831379A JP S5652426 A JPS5652426 A JP S5652426A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- speed processing
- electric power
- clock signal
- high speed
- 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
- Power Sources (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
PURPOSE: To reduce the current comsumption by stopping except when required, operation of the high speed processing part of the microprocessor CPU consisting of a part which requires a high speed processing and a part for which a slow speed processing will do.
CONSTITUTION: In a radio selective calling receiver, a signal which has been received, detected 2 and shaped to a square is decoded by CPU5, and drives a calling horn 8 through the buffer 7. CPU5 is connected to the 3V electric power source 6, and consists of a low speed processing block 15 which counts a clock signal from the oscillating circuit 17 of low frequency, and a high speed processing block 19 which is formed by an oscillating circuit 25 generating a clock signal of high frequency, and a processing circuit 21 executing decoding, storage and operation. Whenever the counting value of the circuit 18 reaches the fixed value, a clock signal from the circuit 25 is provided to the circuit 21, the switching circuit 9 is controlled by a short time decided by the circuit 21, 1V electric power source 10 is applied to the unit only at the time of receiving operation, and the current consumption is reduced by intermittently performing the electric power supply to the unit.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12831379A JPS5652426A (en) | 1979-10-03 | 1979-10-03 | Microprocessor unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12831379A JPS5652426A (en) | 1979-10-03 | 1979-10-03 | Microprocessor unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5652426A true JPS5652426A (en) | 1981-05-11 |
Family
ID=14981677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12831379A Pending JPS5652426A (en) | 1979-10-03 | 1979-10-03 | Microprocessor unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5652426A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5368051A (en) * | 1976-11-29 | 1978-06-17 | Sharp Corp | Integrated circuit device |
-
1979
- 1979-10-03 JP JP12831379A patent/JPS5652426A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5368051A (en) * | 1976-11-29 | 1978-06-17 | Sharp Corp | Integrated circuit device |
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