Renesas M16C FAMILY Hardware Manual page 79

Under development Preliminary specification
Specifications in this manual are tentative and subject to change.
R8C/11 Group
Watchdog timer control register
b7 b6 b5 b4 b3
0 0
Watchdog timer reset register
b7
Watchdog timer start register
b7
Figure 11.2 WDC Register, WDTR Register, and WDTS Register
Rev.0.91 2003 Sep 08
b2 b1 b0
Symbol
WDC
Bit symbol
High-order bit of watchdog timer
(b4-b0)
Reserved bit
(b5)
Reserved bit
(b6)
WDC7 Prescaler select bit
b0
Symbol
WDTR
The watchdog is initialized after a write instruction to this register.
The watchdog timer value is always initialized to "7FFF
whatever value is written.
b0
Symbol
WDTS
The watchdog timer starts counting after a write instruction to this register.
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Address After reset
000F 000XXXXX
16
Bit name
Must set to "0"
Must set to "0"
0 : Divided by 16
1 : Divided by 128
Address After reset
000D Indeterminate
16
Function
Address After reset
000E Indeterminate
16
Function
11. Watchdog Timer
2
Function RW
RO
RW
RW
RW
RW
" regardless of
WO
16
RW
WO