Renesas R5S72621 Manual De Usuario

 

 

 

 

 

 

Section 13   Watchdog Timer 

 

R01UH0134EJ0400  Rev. 4.00  

 

Page 667 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

WRCSR is an 8-bit readable/writable register that controls output of the internal reset signal 
generated by watchdog timer counter (WTCNT) overflow. 

Note:  The method for writing to WRCSR differs from that for other registers to prevent 

erroneous writes. See section 13.3.4, Notes on Register Access, for details. 

7

6

5

4

3

2

1

0

0

0

0

1

1

1

1

1

R/(W)

R/W

R/W

R

R

R

R

R

Bit:

Initial value:

R/W:

WOVF

RSTE

RSTS

-

-

-

-

-

 

 

7 WOVF 

0 R/(W) 

Watchdog 

Timer 

Overflow 

Indicates that the WTCNT has overflowed in 
watchdog timer mode. This bit is not set in interval 
timer mode. 

0: No overflow 

1: WTCNT has overflowed in watchdog timer mode 

[Clearing condition] 
  When 0 is written to WOVF after reading WOVF 

6 RSTE 

0 R/W 

Reset 

Enable 

Selects whether to generate a signal to reset the LSI 
internally if WTCNT overflows in watchdog timer 
mode. In interval timer mode, this setting is ignored. 

0: Not reset when WTCNT overflows* 

1: Reset when WTCNT overflows 

Note:  *  LSI not reset internally, but WTCNT and 

WTCSR reset within this module. 

5 RSTS 

0 R/W 

Reset 

Select 

Selects the type of reset when the WTCNT overflows 
in watchdog timer mode. In interval timer mode, this 
setting is ignored. 

0: Power-on reset 

1: Manual reset 

4 to 0 

 All 

1 

R 

Reserved 

These bits are always read as 1. The write value 
should always be 1.