HT46R47
DECA [m]
Decrement data memory and place result in the accumulator.
Description
Data in the specified data memory is decremented by 1, leaving the result in
the accumulator. The contents of the data memory remain unchanged.
Operation
ACC ¬ [m]-1
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
Ö
¾
¾
HALT
Enter power down mode.
Description
This instruction stops program execution and turns off the system clock. The
contents of the RAM and registers are retained. The WDT and prescaler are
cleared. The power down bit (PD) is set and the WDT time-out bit (TO) is
cleared.
Operation
PC ¬ PC+1
PD ¬ 1
TO ¬ 0
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
0
1
¾
¾
¾
¾
INC [m]
Increment data memory.
Description
Operation
Affected flag(s)
Data in the specified data memory is incremented by 1.
[m] ¬ [m]+1
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
Ö
¾
¾
INCA [m]
Increment data memory and place result in the accumulator.
Description
Data in the specified data memory is incremented by 1, leaving the result in
the accumulator. The contents of the data memory remain unchanged.
Operation
ACC ¬ [m]+1
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
Ö
¾
¾
Rev. 1.40
33
July 18, 2001
ETC [ ETC ]
