Table 443. Swt_To Field Descriptions - STMicroelectronics SPC572L series Reference Manual

RM0400
Field Name
Watchdog time-out period in clock cycles. An internal 32-bit down counter is loaded with this
value when the service sequence is written or when the SWT is enabled.
0-31 WTO
The initial value is 0x0003_FDE0.
The minimum value is 0x0000_0100.
40.3.1.4 SWT Window Register (SWT_WN)
The SWT Window (SWT_WN) register contains the 32-bit window start value. This register
is cleared on reset. This register is read-only if either the SWT_CR[HLK] or SWT_CR[SLK]
bits are set.
Offset
0x00C
0 1 2 3
R
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Field Name
Window start value. When window mode is enabled, the service sequence can only be written
0-31 WST
when the internal down counter is less than this value.
40.3.1.5 SWT Service Register (SWT_SR)
The SWT Service (SWT_SR) register is the target for service operation writes used to reset
the watchdog timer.
Offset
0x010
0 1 2 3
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Table 443. SWT_TO field descriptions

4 5 6 7 8 9 10 11 12 13 14 15 16 17 1
Figure 387. SWT Window Register (SWT_WN)
Table 444. SWT_WN field descriptions
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Figure 388. SWT Service Register (SWT_SR)
Description
8
WST
Description
DocID027809 Rev 4
Software Watchdog Timer (SWT)
Access: Read/Write
19 20 21 22 23 24 25 26 27 28 29 30 31
WSC
Access: Write
855/2058
858