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Watchdog
on-chip
oscillator
φ
PSS
φ
/32
W
[Legend]
TCSRW:
Timer control/status register W
TCW:
Timer counter W
TMW:
Timer mode register W
PSS:
Prescaler S
Register Configuration
Table 9.16 shows the register configuration of the watchdog timer.
Table 9.16 Watchdog Timer Registers
Name
Timer control/status register W
Timer counter W
Timer mode register W *
Clock stop register 2
Port mode register 2
Note: * This register is implemented on the H8/38124 Group only.
Rev. 6.00, 08/04, page 292 of 628
Figure 9.17(2) Block Diagram of Watchdog Timer
(H8/38124 Group)
Abbr.
TCSRW
TCW
TMW
CKSTPR2
PMR2
TMW
TCSRW
TCW
Interrupt/reset
controller
R/W
Initial Value
R/W
H'AA
R/W
H'00
R/W
H'FF
R/W
H'FF
R/W
H'D8
Internal reset signal or
interrupt request signal
Address
H'FFB2
H'FFB3
H'FFF8
H'FFFB
H'FFC9
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