HT67F60 datasheet(236/242 Pages) HOLTEK

236 / 242 page

Rev. 1.50

236

March 06 , 2012

Rev. 1.50

237

March 06 , 2012

HT67F30/HT67F40/HT67F50/HT67F60

TinyPowerTM A/D Flash Type 8-Bit MCU with LCD & EEPRO

Subtract Data Memory from ACC with result in Data Memory

The specified Data Memory is subtracted from the contents of the Accumulator.

The result is stored in the Data Memory. Note that if the result of subtraction is

negative, the C flag will be cleared to 0, otherwise if the result is positive or zero,

the C flag will be set to 1.

[m] ← ACC − [m]

OV, Z, AC, C

Subtract immediate data from ACC

The immediate data specified by the code is subtracted from the contents of the

Accumulator. The result is stored in the Accumulator. Note that if the result of

subtraction is negative, the C flag will be cleared to 0, otherwise if the result is

positive or zero, the C flag will be set to 1.

ACC ← ACC − x

OV, Z, AC, C

Swap nibbles of Data Memory

The low-order and high-order nibbles of the specified Data Memory are

interchanged.

[m].3~[m].0↔[m].7 ~ [m].4

None

Swap nibbles of Data Memory with result in ACC

The low-order and high-order nibbles of the specified Data Memory are

interchanged. The result is stored in the Accumulator. The contents of the Data

Memory remain unchanged.

ACC.3 ~ ACC.0 ← [m].7 ~ [m].4

ACC.7 ~ ACC.4 ← [m].3 ~ [m].0

None

Skip if Data Memory is 0

If the contents of the specified Data Memory is 0, the following instruction is

skipped. As this requires the insertion of a dummy instruction while the next

instruction is fetched, it is a two cycle instruction. If the result is not 0 the program

proceeds with the following instruction.

Skip if [m] = 0

None

Skip if Data Memory is 0 with data movement to ACC

The contents of the specified Data Memory are copied to the Accumulator. If the

value is zero, the following instruction is skipped. As this requires the insertion of a

dummy instruction while the next instruction is fetched, it is a two cycle instruction.

If the result is not 0 the program proceeds with the following instruction.

ACC ← [m]

Skip if [m] = 0

None

SUBM A,[m]

Description

Operation

Affected flag(s)

SUB A,x

Description

Operation

Affected flag(s)

SWAP [m]

Description

Operation

Affected flag(s)

SWAPA [m]

Description

Operation

Affected flag(s)

SZ [m]

Description

Operation

Affected flag(s)

SZA [m]

Description

Operation

Affected flag(s)

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