h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 262

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Rev. 1.00, 05/04, page 228 of 544
Internal reset signal
Note: * After the OVF bit becomes 1, it is cleared to 0 by an internal reset.
[Legend]
WT/IT:
TME:
OVF:
RESO signal
Figure 11.2 Watchdog Timer Mode (RST/NMI = 1) Operation
H'FF
H'00
The XRST bit is also cleared to 0.
Timer mode select bit
Timer enable bit
Overflow flag
TCNT value
WT/IT = 1
TME = 1
Write H'00 to
TCNT
RESO and internal
reset signals generated
132 system clocks
518 system clocks
Overflow
OVF = 1*
WT/IT = 1
TME = 1
Write H'00 to
TCNT
Time