M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 442

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

Watchdog Timer
Figure 2.11.1. Memory map of watchdog timer-related registers
Figure 2.11.2. Watchdog timer-related registers
(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.
b7
Watchdog timer control register
Watchdog timer start register
b7
b6
0
b5
0
b4
b3
b2
000E
000F
b1
16
16
b0
b0
The watchdog timer is initialized and starts counting after a write instruction to
this register. The watchdog timer value is always initialized to “7FFF
regardless of whatever value is written.
Bit symbol
Reserved bit
High-order bit of watchdog timer
Reserved bit
WDC7
Watchdog timer start register (WDTS)
Watchdog timer control register (WDC)
Symbol
Symbol
WDTS
WDC
Prescaler select bit
Bit name
Address
Address
000E
000F
16
16
Function
Indeterminate
000XXXXX
When reset
When reset
Must always be set to “0”
Must always be set to “0”
0 : Divided by 16
1 : Divided by 128
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
2
Function
Mitsubishi microcomputers
16
M16C / 62 Group
”
R
R
W
W
427