UPSD3354DV-40U6 Datasheet, PDF (93/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

UPSD33xx
Supervisory functions
Table 53. WDRST register bit definition
Bit Symbol R/W
Definition
[7:0] WDRST
This SFR is the upper byte of the 24-bit WDT up-counter. Writing
this SFR sets the upper byte of the counter to the written value, and
W _{clears the lower two bytes of the counter to 0000h.}
Counting begins when WDKEY does not contain 55h.
Obsolete ^{Product(s) - Obsolete Product(s)}
Doc ID 9685 Rev 7
93/272