RM0352 datasheet(41/138 Pages) STMICROELECTRONICS

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RM0352

Watchdog timer (WDG)

137

7.2.1

Watchdog load register (WDT_LR)

The WDT_LR register is a 32-bit register containing the value from which the counter is to

decrement. When this register is written to, the count is immediately re-started from the new

value.

The minimum valid value for WDT_LR is 0x1.

Table 27. Watchdog load register WDT_LR

7.2.2

Watchdog value register WDT_VAL

The WDT_VAL register gives the current value of the decrementing watchdog counter.

Table 29. Watchdog value register WDT_VAL

WDT_LR (WDT Base + 0x000)

Reset value: 0xFFFF_FFFF

29 28 27 26 25 24

WDT_LOAD[31:0]

R/W

Table 28. WDT_LR register bit fields

Bit Field

Function

WDT_LOAD

Minimum valid value is 0x1.

Watchdog load value

Value from which the counter is to decrement. When this register is written

to, the count is immediately re-started from the new value.

WDT_VAL (WDT Base + 0x004)

Reset value: 0xFFFF_FFFF

30 29 28 27 26 25 24

WDTVAL[31:0]

Table 30. WDT_VAL register bit fields

Bit Field

Function

WDTVAL

Watchdog value

When read, returns the current value of the decrementing watchdog

counter. Write has no effect.

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