ST SPC560P34 - Figure 432. SWT Service Register (SWT_SR); Figure 433. SWT Counter Output Register (SWT_CO); Table 396. SWT_SR Field Descriptions

RM0046 Functional Safety
Doc ID 16912 Rev 5 751/936
SWT Service Register (SWT_SR)
The SWT Time-Out (SWT_SR) service register is the target for service sequence writes
used to reset the watchdog timer.
SWT Counter Output register (SWT_CO)
The SWT Counter Output (SWT_CO) register is a read only register that shows the value of
the internal down counter when the SWT is disabled.
Figure 432. SWT Service Register (SWT_SR)
Address: Base + 0x0010 Access: User read/write
0123456789101112131415
R00000000 00000 000
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
WSC
W
Reset0000000000000000
Table 396. SWT_SR field descriptions
Field Description
WSC
Watchdog Service Code
This field services the watchdog and clears the SWT_CR[SLK] soft lock bit. To service the watchdog, the
value 0xA602 followed by 0xB480 is written to the WSC field. To clear the SWT_CR[SLK] soft lock bit, the
value 0xC520 followed by 0xD928 is written to the WSC field.
Figure 433. SWT Counter Output register (SWT_CO)
Address: Base + 0x0014 Access: User read/write
0123456789101112131415
R CNT
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R CNT
W
Reset0000000000000000