HT49R50 Holtek Semiconductor Inc, HT49R50 Datasheet - Page 40

• Manufacturer Part Number: HT49R50
• Description: 8-Bit Microcontroller
• 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 and place result in the accumulator
Data in the specified data memory is decremented by one, leaving the result
in the accumulator. The contents of the data memory remain unchanged.
ACC ¬ [m]-1
Enter power down mode
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.
PC ¬ PC+1
PD ¬ 1
TO ¬ 0
Increment data memory
Data in the specified data memory is incremented by one.
[m] ¬ [m]+1
Increment data memory and place result in the accumulator
Data in the specified data memory is incremented by one, leaving the result
in the accumulator. The contents of the data memory remain unchanged.
ACC ¬ [m]+1
TC2
TC2
TC2
TC2
¾
¾
¾
¾
TC1
TC1
TC1
TC1
¾
¾
¾
¾
TO
TO
TO
¾
¾
TO
0
¾
PD
PD
PD
¾
¾
PD
1
¾
40
OV
OV
OV
¾
¾
¾
OV
¾
¾
Z
Ö
Z
Z
Ö
Z
Ö
AC
AC
AC
¾
¾
¾
AC
¾
¾
¾
¾
C
C
C
¾
C
August 18, 1999
HT49C50