Fujitsu 8FX User Manual

MB95630H Series
290 FUJITSU SEMICONDUCTOR LIMITED MN702-00009-2v0-E
CHAPTER 17 CLOCK SUPERVISOR COUNTER
17.1 Overview
17.1 Overview
The clock supervisor counter checks the external clock frequency to detect the
abnormal state of the external clock.
■ Overview of Clock Supervisor Counter
The clock supervisor counter checks the external clock frequency to detect the abnormal state
of the external clock.
The clock supervisor counter automatically counts up the counter based on the external clock
input within the time-base timer interval time selected from eight options.
The main oscillation clock or the suboscillation clock can be selected as the count clock of this
module.
Note:
Operate the clock supervisor counter in main CR clock mode together with the hardware
watchdog timer (running in standby mode).
Otherwise, it cannot detect the abnormal state of the external clock correctly and will
hang up if the external clock stops.
See "CHAPTER 8 HARDWARE/SOFTWARE WATCHDOG TIMER" for the hardware
watchdog timer (running in standby mode).

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English