Fujitsu 8FX Hardware Manual page 130

CHAPTER 8 HARDWARE/SOFTWARE WATCHDOG TIMER
8.4 Register
[bit3:0] WTE[3:0]: Watchdog control bits
These bits controls the watchdog timer.
The read value of these bits is always "0b0000".
bit3:0
Writing "0101"
Writing a value
other than "0101"
Note:
Using the read-modify-write (RMW) type of instruction to access the WDTC register is
prohibited.
108
Activates the watchdog timer (in the first write access after a reset) or clears it (from the second
write access after a reset).
• In the case of activating the watchdog timer
Writing "0101" to these bits in the first write access after a reset starts the software watchdog
timer.
• In the case of clearing the watchdog timer
Writing "0101" to these bits in the first write access or later after a reset clears the hardware
watchdog timer.
Writing "0101" to these bits in the second write access or later after a reset clears the software
watchdog timer.
Has no effect on operation.
FUJITSU SEMICONDUCTOR LIMITED
MB95630H Series
Details
MN702-00009-2v0-E