| 摘要 |
PURPOSE:To reduce the power consumption by extending the sampling cycle for detecting temperature when the temperature variation is limited. CONSTITUTION:After latched 3 following an A/D conversion 2, output of a temperature sensor 1 is converted to a temperature value with a conversion ROM5 and displayed 7 via a decoder/driver 6. The temperature data previously measured is stored in a latch 4 and as the difference increases between the two temperature values, the output of a clock selector 10 is turned to 1min sampling cycle while as it decreases, the output thereof 10-2min sampling cycle. Thus, the sampling cycle of the temperature sensor 1, an A/D converter 2 and the latch 3 is determined by the output of a clock selector 10. |
