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(c) Operation when CSS is set after setting MCC with main system clock operation
Main System Clock Oscillation
Subsystem Clock Oscillation
7.5.2 Subsystem clock operations
When operated with the subsystem clock (with bit 5 (CLS) of the processor clock control register (PCC) set to 1),
the following operations are carried out.
(a) The minimum instruction execution time remains constant (122 s when operated at 32.768 kHz) irrespective
of bits 0 to 2 (PCC0 to PCC2) of the PCC.
(b) Watchdog timer counting stops.
Caution Do not execute the STOP instruction while the subsystem clock is in operation.
CHAPTER 7 CLOCK GENERATOR
Figure 7-9. Main System Clock Stop Function (2/2)
MCC
CSS
CLS
CPU Clock
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