Fujitsu F2MC-8FX Hardware Manual page 191

F2mc-8fx 8-bit microcontroller
Hide thumbs Also See for F2MC-8FX:
Table of Contents

Advertisement

Table 11.3-1 Functional Description of Each Bit of Watchdog Timer Control Register (WDTC)
Bit name
CS1, CS0:
bit7
Count clock switch
bit6
bits
bit5
Unused bits
bit4
WTE3, WTE2,
bit3
WTE1, WTE0:
to
Watchdog control
bit0
bits
Read-modify-write instructions cannot be used.
These bits select the count clock of the watchdog timer.
CS1
CS0
0
0
0
1
1
0
1
1
• Write to these bits at the same time as activating the watchdog timer by the watchdog
control bits.
• No change can be made once the watchdog timer is activated.
Note:
Always select the output of the watch prescaler in the subclock mode or sub PLL clock
mode, as the timebase timer is stopped in these modes. Do not select the output of the
watch prescaler in single system clock product.
These bits are not used.
• The read value is "00".
• Write has no effect on operation.
These bits are used to control the watchdog timer.
Writing "0101
" : activates the watchdog timer (in first write after reset) or clears it (in
B
second or succeeding write after reset).
Writing other than "0101
• The read value is "0000
CHAPTER 11 WATCHDOG TIMER
Function
Count clock switch bits
Output cycle of timebase timer (
Output cycle of timebase timer (
Output cycle of watch prescaler (
Output cycle of watch prescaler (
" : has no effect on operation.
B
".
B
21
2
/F
)
CH
20
2
/F
)
CH
14
2
/F
)
CL
13
2
/F
)
CL
177

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Mb95170j series

Table of Contents