Chapter 9 Watchdog Timer Functions; Functions - NEC V850ES/SA2 UPD703201 Manual

32-bit single-chip microcontrollers

Table of Contents

The watchdog timer has the following operation modes.

• Watchdog timer

• Interval timer

• Selecting the oscillation stabilization time

The following functions are realized from the above-listed operation modes.

• Generation of non-maskable interrupt request signal (INTWDT) upon overflow of watchdog timer

• Generation of system reset signal upon overflow of watchdog timer

• Generation of maskable interrupt request signal (INTWDTM) upon overflow of interval timer

• Securing of oscillation stabilization time for main system clock

Select whether to use the watchdog timer in the watchdog timer mode or the interval timer mode using

watchdog timer mode register (WDTM).

CHAPTER 9 WATCHDOG TIMER FUNCTIONS

Preliminary User's Manual U15905EJ1V0UD