uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
uPD789871 Subseries 8-Bit Single-Chip Microcontrollers PUM
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144<br />
X1, CL1<br />
RESET<br />
Internal<br />
reset signal<br />
Port pin<br />
X1, CL1<br />
Overflow in<br />
watchdog timer<br />
Internal<br />
reset signal<br />
Port pin<br />
X1, CL1<br />
RESET<br />
Internal<br />
reset signal<br />
Port pin<br />
During normal<br />
operation<br />
During normal operation<br />
CHAPTER 14 RESET FUNCTION<br />
Figure 14-2. Reset Timing by RESET Input<br />
Reset period<br />
(oscillation<br />
stops)<br />
Delay Delay<br />
Oscillation<br />
stabilization<br />
time wait<br />
Figure 14-3. Reset Timing by Overflow in Watchdog Timer<br />
Reset period<br />
(oscillation<br />
continues)<br />
Figure 14-4. Reset Timing by RESET Input in STOP Mode<br />
STOP instruction execution<br />
Stop status<br />
During normal operation (oscillation<br />
stops)<br />
Reset period<br />
(oscillation<br />
stops)<br />
Delay Delay<br />
Preliminary User’s Manual U14938EJ1V0UM<br />
Hi-Z<br />
Oscillation<br />
stabilization<br />
time wait<br />
Hi-Z<br />
Oscillation<br />
stabilization<br />
time wait<br />
Hi-Z<br />
Normal operation<br />
(reset processing)<br />
Normal operation<br />
(reset processing)<br />
Normal operation<br />
(reset processing)
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