Renesas SH7781 - Manual (Page 790)

16. Watchdog Timer and Reset (WDT)
Rev.1.00 Jan. 10, 2008 Page 760 of 1658
REJ09B0261-0100
Figure 16.1 is a block diagram of the WDT.
PRESET
MRESETOUT
Watchdog Timer and Reset module (WDT) STATUS[1:0]
Internal reset request
2
WDTCNT
WDTCSR
WDTST
Count-up signal
Comparator
Reset control
circuit
CPG
Interrupt request
Interrupt
control circuit
INTC
Peripheral clock
(Pck)
Legend:
WDTCNT: Watchdog timer counter
WDTST: Watchdog timer stop time register
WDTBCNT: Watchdog timer base counter
WDTBST: Watchdog timer base stop time register
WDTCSR: Watchdog timer control/status register
WDTBCNT
WDTBST
Comparator
Figure 16.1 Block Diagram of WDT