230
Chapter 8
Clock Generator
Preliminary User’s Manual U14913EE1V0UM00
8.5 Power
Saving
Functions
8.5.1 General
The device provides the following power saving functions. These modes can be combined and switched
to suit the target application, which enables effective implementation of low-power systems.
Table 8-4: Power Saving Modes Overview
Remarks: 1.
❍
Operates
2. – Stopped
3. In addition the comparator circuit needs to be switched off in watch mode and STOP
mode to save power consumption.
4. ( ): The LCD-driver probably have to be switched off in watch mode and/or in low voltage
mode to meet the power consumption requirements.
Note: Only for flash devices, in IDLE mode flash memory is active, in watch mode the power supply to
the flash memory is switched off.
Clock Source
Mode
Operation of
Clock Supply to
oscillator
PLL
peripherals
CPU
LCD
watch
OSC
mode
Initial Mode
Normal
❍
–
❍
❍
❍
❍
PLL
enabled
Normal
❍
❍
❍
❍
❍
❍
watch mode/
IDLE
Note
❍
–
–
–
(
❍
)
❍
HALT
❍
❍
❍
–
❍
❍
STOP
–
–
–
–
–
–
Direct mode
Normal
–
–
❍
❍
❍
❍
watch mode/
IDLE
Note
–
–
–
–
(
❍
)
❍
HALT
–
–
❍
–
❍
❍
STOP
–
–
–
–
–
–
Summary of Contents for V850E/CA1 ATOMIC
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