M058SFAN Datasheet, PDF (45/72 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller

NuMicro M058S Series Datasheet
6.8 Watchdog Timer (WDT)
6.8.1 Overview
The purpose of Watchdog Timer is to perform a system reset when system runs into an unknown state.
This prevents system from hanging for an infinite period of time. Besides, this Watchdog Timer
supports the function to wake-up system from Idle/Power-down mode.
6.8.2 Features
 18-bit free running up counter for Watchdog Timer time-out interval
 Selectable time-out interval (2⁴ ~ 2¹⁸) WDT_CLK cycle and the time-out interval period is
104 ms ~ 26.3168 s if WDT_CLK = 10 kHz
 System kept in reset state for a period of (1 / WDT_CLK) * 63
 Supports Watchdog Timer reset delay period
 Selectable reset delay period 3/18/130/1026 * WDT_CLK
 Supports to force Watchdog Timer enabled after chip powered on or reset while CWDTEN
(CONFIG[31] Watchdog Enable) bit is set to 0.
 Supports Watchdog Timer time-out wake-up function only if WDT clock source is selected
as 10 kHz
Nov. 27, 2014
Page 45 of 72
Rev.1.03