Hitachi H8/3035 Series Hardware Manual page 295

Bit 6—Timer Mode Select (WT/
interval timer. If used as an interval timer, the WDT generates an interval timer interrupt request
when TCNT overflows. If used as a watchdog timer, the WDT generates a reset signal when
TCNT overflows.
Bit 6
,7 ,7
WT/ Description
0 Interval timer: requests interval timer interrupts
1 Watchdog timer: generates a reset signal
Bit 5—Timer Enable (TME): Selects whether TCNT runs or is halted.
Bit 5
TME Description
0 TCNT is initialized to H'00 and halted
1 TCNT is counting
Bits 4 and 3—Reserved: These bits cannot be modified and are always read as 1.
Bits 2 to 0—Clock Select 2 to 0 (CKS2/1/0): These bits select one of eight internal clock
sources, obtained by prescaling the system clock (ø), for input to TCNT.
Bit 2 Bit 1
CKS2 CKS1
0 0
1
1 0
1
,7 ,7
): Selects whether to use the WDT as a watchdog timer or
Bit 0
CKS0 Description
0 ø/2
1 ø/32
0 ø/64
1 ø/128
0 ø/256
1 ø/512
0 ø/2048
1 ø/4096
(Initial value)
(Initial value)
(Initial value)
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