M16C62_M Datasheet, PDF (472/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Watchdog Timer
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(6) Registers related to the watchdog timer
Figure 2.11.1 shows the memory map of watchdog timer-related registers, and Figure 2.11.2 shows
watchdog timer-related registers.
000E16
000F16
Watchdog timer start register (WDTS)
Watchdog timer control register (WDC)
Figure 2.11.1. Memory map of watchdog timer-related registers
Watchdog timer control register
b7 b6 b5 b4 b3 b2 b1 b0
00
Symbol
WDC
Address
000F16
Bit symbol
Bit name
High-order bit of watchdog timer
Reserved bit
Reserved bit
WDC7
Prescaler select bit
When reset
000XXXXX2
Function
Must always be set to “0”
Must always be set to “0”
0 : Divided by 16
1 : Divided by 128
RW
Watchdog timer start register
b7
b0
Symbol
WDTS
Address
000E16
When reset
Indeterminate
Function
RW
The watchdog timer is initialized and starts counting after a write instruction to
this register. The watchdog timer value is always initialized to “7FFF16”
regardless of whatever value is written.
Figure 2.11.2. Watchdog timer-related registers
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