HD6417750 Datasheet, PDF (311/1039 Pages) Renesas Technology Corp – SuperH RISC engine

10.7 Overview of Watchdog Timer
10.7.1 Block Diagram
Figure 10.2 shows a block diagram of the WDT.
Standby
release
Standby
control
WDT
Internal reset
request
Interrupt
request
Reset
control
Interrupt
control
Frequency divider
Clock selection
Overflow
Clock selector
Clock
WTCSR
WTCNT
Bus interface
Standby
mode
Frequency
divider 2 ×1
clock
WTCSR: Watchdog timer control/status register
WTCNT: Watchdog timer counter
Figure 10.2 Block Diagram of WDT
Rev. 6.0, 07/02, page 259 of 986