saf-xc866-4rri3v Infineon Technologies Corporation, saf-xc866-4rri3v Datasheet - Page 67

• Manufacturer Part Number: saf-xc866-4rri3v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.9
The power saving modes of the XC866 provide flexible power consumption through a
combination of techniques, including:
• Stopping the CPU clock
• Stopping the clocks of individual system components
• Reducing clock speed of some peripheral components
• Power-down of the entire system with fast restart capability
After a reset, the active mode (normal operating mode) is selected by default (see
Figure
different power saving modes can be selected by software. They are:
• Idle mode
• Slow-down mode
• Power-down mode
Figure 26
Data Sheet
26) and the system runs in the main system clock frequency. From active mode,
any interrupt
any interrupt
IDLE
& SD=0
& SD=1
Power Saving Modes
Transition between Power Saving Modes
set IDLE
set IDLE
bit
bit
set SD
SLOW-DOWN
bit
ACTIVE
63
clear SD
bit
set PD
set PD
bit
bit
Functional Description
EXINT0/RXD pin
EXINT0/RXD pin
& SD=0
POWER-DOWN
& SD=1
V1.2, 2007-10
XC866