SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 397

• Manufacturer Part Number: SAF-C164SM
• Description: 16-Bit CMOS Microcontroller
• Manufacturer: Infineon Technologies

21
An increasingly important objective for microcontroller-based systems is the significant
reduction of power consumption. A contradictory objective is to reach a certain level of
system performance. Besides optimization of design and technology, a microcontroller’s
power consumption can generally be reduced by lowering its operating frequency and/
or by reducing the clocked circuitry. The architecture of the C164CM provides three
major means of reducing its power consumption under software control (see
Figure
• Reduction of the CPU frequency for Slow Down operation
• Selection of the active peripheral modules
• Special operating modes to deactivate CPU, ports, and control logic
This enables the application (i.e. the programmer) to choose the optimum constellation
for each operating condition, so the power consumption can be adapted to conditions
like maximum performance, partial performance, intermittent operation or standby.
User’s Manual
(Flexible Clock Generation Management)
(Flexible Peripheral Management)
(Idle, Sleep, Power Down)
21-1):
Power Management
21-1
Power Management
C164CM/C164SM
Derivatives
V1.0, 2002-02