SH7750_08 Datasheet, PDF (384/1162 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 10 Clock Oscillation Circuits
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
Legend:
WTCSR: Watchdog timer control/status register
WTCNT: Watchdog timer counter
Figure 10.2 Block Diagram of WDT
Rev.7.00 Oct. 10, 2008 Page 300 of 1074
REJ09B0366-0700