h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 447

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

12.1.3
There are no pins related to the WDT.
12.1.4
The WDT has five registers, as summarized in table 12.1. These registers control clock selection,
WDT mode switching, and the reset signal.
(Interrupt request signal)
Internal reset signal*
Interrupt request signal
Legend:
TCSR :
TCNT :
Note: * An internal reset signal can be generated by setting the register.
Internal NMI
WOVI1
Pin Configuration
Register Configuration
Timer control/status register
Timer counter
Figure 12.1 (b) Block Diagram of WDT1
Interrupt
control
control
Reset
Overflow
Module bus
TCNT
Clock
WDT
Rev. 5.00 Sep 22, 2005 page 421 of 1136
select
Clock
TCSR
Section 12 Watchdog Timer
Internal clock
interface
/2
/64
/128
/512
/2048
/8192
/32768
/131072
Bus
REJ09B0257-0500
SUB/2
SUB/4
SUB/8
SUB/16
SUB/32
SUB/64
SUB/128
SUB/256