HD6432633 Datasheet, PDF (731/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

WDT1* Mode Select
WDT1
WT/IT
0
1
Description
Interval timer mode: WDT1 requests an interval timer interrupt (WOVI)
from the CPU when the TCNT overflows.
(Initial value)
Watchdog timer mode: WDT1 requests a reset or an NMI interrupt from
the CPU when the TCNT overflows.
Note: * In the case of the H8S/2695, only 0 should be written to the WT/IT bit in the TCSR1
register.
Bit 5—Timer Enable (TME): Selects whether TCNT runs or is halted.
Bit 5
TME
0
1
Description
TCNT is initialized to H'00 and halted
TCNT counts
(Initial value)
WDT0 TCSR Bit 4—Reserved Bit: This bit is always read as 1 and cannot be modified.
Note: In the case of the H8S/2695, only 0 should be written to the TME bit in the TCSR1
register.
WDT1 TCSR Bit 4—Prescaler Select (PSS): This bit is used to select an input clock source for
the TCNT of WDT1.
See the descriptions of Clock Select 2 to 0 for details.
WDT1 TCSR
Bit 4
PSS
Description
0
The TCNT counts frequency-division clock pulses of the ø based
prescaler (PSM).
(Initial value)
1
The TCNT counts frequency-division clock pulses of the ø SUB-based prescaler
(PSS).
Note: In the case of the H8S/2695, only 0 should be written to the PSS bit in the TCSR1 register.
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