CHAPTER 19 RESET FUNCTION
Preliminary User’s Manual U16315EJ1V0UD
356
Figure 19-2. Timing of Reset by RESET Input
Delay
Delay
Hi-Z
Note
Normal operation
Reset period
(Oscillation stop)
Operation
stop
(17/f
R
)
Normal operation
(Reset processing, Ring-OSC clock)
X1
RESET
Internal
reset signal
Port pin
CPU clock
Figure 19-3. Timing of Reset Due to Watchdog Timer Overflow
Hi-Z
Note
Normal operation
Reset period
(Oscillation stop)
X1
Watchdog
timer
overflow
Internal
reset signal
Port pin
Operation
stop
(17/f
R
)
Normal operation
(Reset processing, Ring-OSC clock)
CPU clock
Caution
A watchdog timer internal reset resets the watchdog timer.
Figure 19-4. Timing of Reset in STOP Mode by RESET Input
Delay
Delay
Hi-Z
Note
Normal operation
X1
RESET
Internal
reset signal
Port pin
Stop status
(Oscillation stop)
STOP instruction execution
Reset period
(Oscillation stop)
Operation
stop
(17/f
R
)
Normal operation
(Reset processing, Ring-OSC clock)
CPU clock
Note
The port pins become high impedance, except for P130, which is set to low-level output.
Remark
For the reset timing of the power-on-clear circuit and low-voltage detector, see
CHAPTER 21 POWER-
ON-CLEAR CIRCUIT
and
CHAPTER 22 LOW-VOLTAGE DETECTOR
.