Holtek HT827A0 Manual page 34

CLR WDT1 Preclear watchdog timer
Description The PD, TO flags, WDT and the WDT Prescaler are all cleared (re-count
from zero) if the other preclear WDT instruction has been executed. Execu-
tion only of this instruction without the other preclear instruction sets the
indicated flag, which implies that this instruction is executed and the PD
and TO flags remain unchanged.
Operation
WDT & WDT Prescaler ¬ 00H*
PD & TO ¬ 0*
Affected flag(s)
TC2
¾
CLR WDT2 Preclear watchdog timer
Description The PD, TO flags, WDT and the WDT Prescaler are all cleared (re-count
from zero) if the other preclear WDT instruction has been executed. Execu-
tion only of this instruction without the other preclear instruction sets the
indicated flag, which implies that this instruction is executed and the PD
and TO flags remain unchanged.
Operation
WDT & WDT Prescaler ¬ 00H*
PD & TO ¬ 0*
Affected flag(s)
TC2
¾
CPL [m] Complement data memory
Description Each bit of the specified data memory is logically complemented (1¢s comple-
ment). Bits which previously contained a one are changed to zero and
vice-versa.
Operation [m] ¬ [m]
Affected flag(s)
TC2
¾
TC1 TO PD OV
¾ 0* 0* ¾
TC1 TO PD OV
¾ 0* 0* ¾
TC1 TO PD OV
¾ ¾ ¾ ¾
34
HT827A0
Z AC C
¾ ¾ ¾
Z AC C
¾ ¾ ¾
Z AC C
Ö ¾ ¾
March 15, 2000