ht827a0 Holtek Semiconductor Inc., ht827a0 Datasheet - Page 36

• Manufacturer Part Number: ht827a0
• Description: 8-bit Microcontroller With Voice Rom
• Manufacturer: Holtek Semiconductor Inc.

DECA [m]
Description
Operation
Affected flag(s)
HALT
Description
Operation
Affected flag(s)
INC [m]
Description
Operation
Affected flag(s)
INCA [m]
Description
Operation
Affected flag(s)
Decrement data memory place result in the accumulator
Data in the specified data memory are decremented by one, leaving the re-
sult in the accumulator. The contents of the data memory remain un-
changed.
ACC ¬ [m]-1
Enter power down mode
This instruction stops the 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.
PC ¬ PC+1
PD ¬ 1
TO ¬ 0
Increment data memory
Data in the specified data memory are incremented by one.
[m] ¬ [m]+1
Increment data memory-place result in accumulator
Data in the specified data memory are incremented by one, leaving the re-
sult in the accumulator. The contents of the data memory remain un-
changed.
ACC ¬ [m]+1
TC2
TC2
TC2
TC2
¾
¾
¾
¾
TC1
TC1
TC1
TC1
¾
¾
¾
¾
TO
TO
TO
TO
¾
¾
¾
0
PD
PD
PD
PD
¾
¾
¾
1
36
OV
OV
OV
OV
¾
¾
¾
¾
¾
Z
Z
Z
Z
Ö
Ö
Ö
AC
AC
AC
AC
¾
¾
¾
¾
¾
¾
¾
¾
C
C
C
C
March 15, 2000
HT827A0