UPD78F9418A NEC, UPD78F9418A Datasheet - Page 253

• Manufacturer Part Number: UPD78F9418A
• Description: (UPD7894xxA) 8-Bit Single Chip Microcontrollers
• Manufacturer: NEC

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watchdog timer
reset signal
reset signal
reset signal
Overflow in
Port pin
RESET
Internal
Port pin
RESET
Internal
Port pin
Internal
X1
X1
X1
During normal
operation
During normal
operation
During normal
operation
STOP instruction execution
Figure 17-3. Reset Timing by Overflow in Watchdog Timer
Figure 17-4. Reset Timing by RESET Input in STOP Mode
Figure 17-2. Reset Timing by RESET Input
Stop status
(oscillation stops)
Delay
CHAPTER 17 RESET FUNCTION
User’s Manual U13952EJ3V0UD
Delay
Reset period
(oscillation stops)
Reset period
(oscillation
continues)
Reset period
(oscillation stops)
Delay
Delay
Oscillation
stabilization
time wait
Oscillation
stabilization
time wait
Oscillation
stabilization
time wait
Hi-Z
Hi-Z
Hi-Z
Normal operation
(reset processing)
Normal operation
(reset processing)
Normal operation
(reset processing)
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