
CHAPTER 20 CLOCK MONITOR
Preliminary User’s Manual U16315EJ1V0UD
365
Figure 20-3. Timing of Clock Monitor (3/3)
(5) Clock monitor status after RESET input
(CLME = 1 is set after RESET input and at the end of X1 input clock oscillation stabilization time)
CPU operation
Clock monitor status
CLME
RESET
Ring-OSC clock
X1 input clock
Reset
Oscillation stabilization time
Normal
operation
Clock supply
stopped
Normal operation (Ring-OSC clock)
Monitoring
Monitoring stopped
Monitoring
17 clocks
Set to 1 by software
RESET input clears bit 0 (CLME) of the clock monitor mode register (CLM) to 0 and stops the clock monitor
operation. When CLME is set to 1 by software at the end of the oscillation stabilization time of the X1 input clock,
monitoring is started.