Renesas R5S72621 User Manual

Page of 2152
 
 
 
 
 
 
Section 13   Watchdog Timer 
 
R01UH0134EJ0400  Rev. 4.00  
 
Page 671 of 2108 
Sep 24, 2014 
 
 
 
SH7262 Group, SH7264 Group 
H'FF
H'00
Overflow
H'00 written
in WTCNT
Internal  
reset signal*
WDTOVF
signal
WTCNT
value
WDTOVF and internal reset generated
WT/
IT:
TME:
Timer mode select bit
Timer enable bit
H'00 written
in WTCNT
Time
128 
× Pφ clock cycles
64 
× Pφ clock cycles
Note:  *  Internal reset signal occurs only when the RSTE bit is set to 1.
[Legend]
WT/
IT = 1
TME = 1
WOVF = 1
WT/
IT = 1
TME = 1
 
Figure 13.4   Operation in Watchdog Timer Mode