Renesas SH7781 Manual De Usuario

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