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MC81F4104 Datasheet, PDF (96/118 Pages) Finechips – ABOV SEMICONDUCTOR | |||
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MC81F4104
21.4 Changing the stabilizing time
After reset or wake up from the stop/sleep mode, there is a stabilizing time to make sure the system
oscillation is stabilized. Actually the stabilizing time is the basic interval timerâs one cycle time.
So it is adjustable by changing the basic interval timerâs clock division.( See chapter â14.BASIC
INTERVAL TIMERâ at page 68 to know how to change the basic interval timerâs clock division.)
It is useful to reduce the power consumption in battery operation with stop/sleep mode. In the battery
operation, reducing normal operation time is the key-point to reducing the power consumption.
Note that, it is not possible after reset. Because after reset, the control registers are initialized.
21.5 Minimizing Current Consumption
The Stop mode is designed to reduce power consumption. To minimize current drawn during Stop
mode, the user should turnoff output drivers that are sourcing or sinking current, if it is practical.
When port is configured as an input, input level
should be closed to 0V or 5V to avoid power
consumption.
Figure 21-6 Application Example of Unused Input Port
96
October 19, 2009 Ver.1.35
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