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Chapter 18
Standby Function
User’s Manual U16702EE3V2UD00
Figure 18-2:
Standby Transition from PLL Operation (PLL = ON)
Notes: 1.
After OSTS time is expired CPU returns to PLL operation mode. (Flash setup time, PLL
lock-up time)
2.
After OSTS time is expired CPU returns to PLL operation mode. If WDT2RES occurs when
counting the oscillation stabilization time, CPU clock changed to ring oscillator.
Remark:
For details explanation of OSTS, refer to 6.3 (7)”Oscillation stabilization time select register
(OSTS)” on page 241 and 10.3 (1)”Oscillation stabilization time select register (OSTS)” on
page 360.
Figure 18-3:
Standby Transition from X1 Through Mode (PLL = ON)
Notes: 1.
After OSTS time is expired CPU returns to X1 through mode operation. (Flash setup time)
2.
After OSTS time is expired CPU returns to X1 through mode operation. If WDT2RES occurs
when counting the oscillation stabilization time, CPU clock changed to ring oscillator.
Remark:
For details explanation of OSTS, refer to 6.3 (7)”Oscillation stabilization time select register
(OSTS)” on page 241 and 10.3 (1)”Oscillation stabilization time select register (OSTS)” on
page 360.
PLL operation
(PLL = ON)
IDLE2 mode
IDLE1 mode
STOP mode
HALT mode
Note 2
Note 1
X1 = ON, PLL = ON
X1 = OFF, PLL = OFF
X1 = ON, PLL = ON
X1 = ON, PLL = OFF
X1 through mode
(PLL = ON)
IDLE2 mode
IDLE1 mode
STOP mode
HALT mode
Note 2
Note 1
X1 = ON, PLL = ON
X1 = OFF, PLL = OFF
X1 = ON, PLL = ON
X1 = ON, PLL = OFF
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