M263 datasheet(306/398 Pages) NUVOTON

Part #	M263

Description	Arm짰 Cortex짰-M 32-bit Microcontroller

PDF	398 Pages

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Manufacturer	NUVOTON [Nuvoton Technology Corporation]

Direct Link	http://www.nuvoton.com

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306 / 398 page

M261/M262/M263

Mar 25, 2020

Page 306 of 398

Rev 1.02

6.9

Watchdog Timer (WDT)

6.9.1

Overview

The Watchdog Timer (WDT) is used 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.

6.9.2

Features



18-bit free running up counter for WDT time-out interval



Selectable time-out interval (2

4 ~ 218) and the time-out interval is 1.6 ms ~ 26.214 s if

WDT_CLK =

10 kHz.



System kept in reset state for a period of (1 / WDT_CLK) * 63



Supports selectable WDT reset delay period, including 1026, 130, 18 or 3 WDT_CLK

reset delay period



Supports to force WDT enabled after chip powered on or reset by setting CWDTEN[2:0]

in Config0 register



Supports WDT time-out wake-up function only if WDT clock source is selected as

10 kHz

or LXT.

M263 Datasheet(PDF) 306 Page - Nuvoton Technology Corporation