Nano100(A)
5.12 Watchdog Timer Controller
5.12.1 Overview
The purpose of Watchdog Timer is to perform a system reset after the software running into a
problem. This prevents system from hanging for an infinite period of time. Besides, this Watchdog
Timer supports the function to wake-up CPU from power-down mode. The watchdog timer
includes an 18-bit free running counter with programmable time-out intervals.
5.12.2 Features
18-bit free running WDT counter for Watchdog timer time-out interval.
Selectable time-out interval (2^4 ~ 2^18) and the time-out interval is 104 ms ~ 26.316
s (if WDT_CLK = 10 kHz).
Reset period = (1 / 10 kHz) * 63, if WDT_CLK = 10 kHz.
Mar 31, 2015
Page 66 of 95
Revision V1.00
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