h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 383

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Internal reset signal *
[Legend]
WT/IT:
TME:
Notes: 1.
Internal reset signal *
[Legend]
WT/IT:
TME:
Notes: 1.
Figure 12.3 (a) WDT_0 Operation in Watchdog Timer Mode
Figure 12.3 (b) WDT_1 Operation in Watchdog Timer Mode
2.
After the WOVF bit becomes 1, it is cleared to 0 by an internal reset.
The internal reset signal is generated only if the RSTE bit is set to 1.
Timer mode select bit
Timer enable bit
H'FF
H'00
H'FF
H'00
2.
TCNT value
TCNT value
Timer mode select bit
Timer enable bit
After the WOVF bit becomes 1, it is cleared to 0 by an internal reset.
The internal reset signal is generated only if the RSTE bit is set to 1.
2
WT/IT = 1
TME = 1
WT/IT = 1
TME = 1
2
Write H'00
to TCNT
Write H'00
to TCNT
Internal reset is
generated
WOVF = 1 *
Internal reset
is generated
Overflow
Overflow
WOVF = 1*
515/516 states
518 states
Rev. 2.00 Dec. 05, 2005 Page 345 of 724
1
1
WT/IT = 1
TME = 1
Section 12 Watchdog Timer (WDT)
WT/IT = 1
TME = 1
Write H'00
to TCNT
Write H'00
to TCNT
REJ09B0200-0200
Time
Time