CHAPTER 8 CLOCK GENERATION FUNCTION
182
User’s Manual U15195EJ5V0UD
Figure 8-1 shows the operation of the clock generator in normal operation mode, HALT mode, IDLE mode, and
software STOP mode.
An effective low power consumption system can be realized by combining these modes and switching modes
according to the required use.
Figure 8-1. Power Save Mode State Transition Diagram
Normal operation mode
Software STOP mode
Set STOP mode
IDLE mode
Set IDLE mode
Release according to RESET,
NMI, or maskable interrupt
Note
Set HALT mode
Release according to RESET,
NMI, or maskable interrupt
HALT mode
Release according to RESET,
NMI, or maskable interrupt
Note
Note
INTPn (n = 0 to 4, 20 to 25)
However, in cases such as when a digital filter using clock sampling is selected as the noise eliminator
for INTP20 to INTP25, the software STOP or IDLE mode cannot be released.