HT45F43 datasheet(138/152 Pages) HOLTEK

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CPL [m]

Complement Data Memory

Description

Each bit of the specified Data Memory is logically complemented (1

¢s complement).

Bits which previously contained a 1 are changed to 0 and vice versa.

Operation

[m]

¬ [m]

Affected flag(s)

CPLA [m]

Complement Data Memory with result in ACC

Description

Each bit of the specified Data Memory is logically complemented (1

¢s complement).

Bits which previously contained a 1 are changed to 0 and vice versa. The complemented

result is stored in the Accumulator and the contents of the Data Memory remain un-

changed.

Operation

ACC

¬ [m]

Affected flag(s)

DAA [m]

Decimal-Adjust ACC for addition with result in Data Memory

Description

Convert the contents of the Accumulator value to a BCD ( Binary Coded Decimal) value

resulting from the previous addition of two BCD variables. If the low nibble is greater

than 9 or if AC flag is set, then a value of 6 will be added to the low nibble. Otherwise the

low nibble remains unchanged. If the high nibble is greater than 9 or if the C flag is set,

then a value of 6 will be added to the high nibble. Essentially, the decimal conversion is

performed by adding 00H, 06H, 60H or 66H depending on the Accumulator and flag

conditions. Only the C flag may be affected by this instruction which indicates that if the

original BCD sum is greater than 100, it allows multiple precision decimal addition.

Operation

[m]

¬ ACC + 00H or

[m]

¬ ACC + 06H or

[m]

¬ ACC + 60H or

[m]

¬ ACC + 66H

Affected flag(s)

DEC [m]

Decrement Data Memory

Description

Data in the specified Data Memory is decremented by 1.

Operation

[m]

¬ [m] - 1

Affected flag(s)

DECA [m]

Decrement Data Memory with result in ACC

Description

Data in the specified Data Memory is decremented by 1. The result is stored in the Accu-

mulator. The contents of the Data Memory remain unchanged.

Operation

ACC

¬ [m] - 1

Affected flag(s)

HALT

Enter power down mode

Description

This instruction stops the program execution and turns off the system clock. The con-

tents of the Data Memory and registers are retained. The WDT and prescaler are cleared.

The power down flag PDF is set and the WDT time-out flag TO is cleared.

Operation

¬ 0

PDF

¬ 1

Affected flag(s)

TO, PDF

Rev. 1.20

138

September 15, 2011

HT45F23/HT45F43

8-Bit Flash MCU with Op Amps & Comparators

HT45F43 Datasheet(PDF) 138 Page - Holtek Semiconductor Inc

HT45F43 Datasheet(HTML) 138 Page - Holtek Semiconductor Inc

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