Fujitsu F2MC-8FX Hardware Manual page 201

Table 12.3-1 Functional Description of Each Bit of Hardware Watchdog Timer Control
Register (HWDC)
Bit name
bit7
Unused bits
bit6
Reserved bit
bit5
Reserved bit
bit4
WTE3, WTE2,
bit3
WTE1, WTE0:
to
Watchdog control
bit0
bits
Read-modify-write instructions can not be used.
These bits are not used.
• The read value is "00".
• Write has no effect on operation.
These bits are reserved.
• Write has no effect on operation.
• Read value is "0".
These bits are reserved.
• Write has no effect on operation.
• Read value is "0".
These bits are used to control the hardware watchdog timer.
Writing "0101 " :
B
Writing other than "0101
• The read value is "0000
CHAPTER 12 HARDWARE WATCHDOG TIMER
Function
clear the hardware watchdog timer
" : has no effect on operation.
B
".
B
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