SAK-XC2264-56F66L INFINEON [Infineon Technologies AG], SAK-XC2264-56F66L Datasheet - Page 64

• Manufacturer Part Number: SAK-XC2264-56F66L
• Description: 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance
• Manufacturer: INFINEON [Infineon Technologies AG]

Preliminary
3.16
The XC226x provides several means to control the power it consumes either at a given
time or averaged over a certain timespan. Three mechanisms can be used (partly in
parallel):
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Wake-up from power reduction modes can be triggered either externally by signals
generated by the external system, or internally by the on-chip wake-up timer, which
supports intermittent operation of the XC226x by generating cyclic wake-up signals. This
offers full performance to quickly react on action requests while the intermittent sleep
phases greatly reduce the average power consumption of the system.
Note: When selecting the supply voltage and the clock source and generation method,
Data Sheet
Supply Voltage Management allows the temporary reduction of the supply voltage
of major parts of the logic, or even the complete disconnection. This drastically
reduces the power consumed because of leakage current, in particular at high
temperature.
Several power reduction modes provide the optimal balance of power reduction and
wake-up time.
Clock Generation Management controls the frequency of internal and external
clock signals. While the clock signals for currently inactive parts of logic are disabled
automatically, the user can reduce the XC226x’s system clock frequency which
drastically reduces the consumed power.
External circuitry can be controlled via the programmable frequency output EXTCLK.
Peripheral Management permits temporary disabling of peripheral modules. Each
peripheral can separately be disabled/enabled. Also the CPU can be switched off
while the peripherals can continue to operate.
the required parameters must be carefully written to the respective bitfields, to
avoid unintended intermediate states. Recommended sequences are provided
which ensure the intended operation of power supply system and clock system.
Power Management
62
XC2000 Family Derivatives
Functional Description
XC2267 / XC2264
V0.1, 2007-02
Draft Version