HT45F43 datasheet(144/152 Pages) HOLTEK

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SWAP [m]

Swap nibbles of Data Memory

Description

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

Operation

[m].3~[m].0

« [m].7 ~ [m].4

Affected flag(s)

None

SWAPA [m]

Swap nibbles of Data Memory with result in ACC

Description

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 un-

changed.

Operation

ACC.3 ~ ACC.0

¬ [m].7 ~ [m].4

ACC.7 ~ ACC.4

¬ [m].3 ~ [m].0

Affected flag(s)

None

SZ [m]

Skip if Data Memory is 0

Description

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.

Operation

Skip if [m] = 0

Affected flag(s)

None

SZA [m]

Skip if Data Memory is 0 with data movement to ACC

Description

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 in-

struction 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.

Operation

ACC

¬ [m]

Skip if [m] = 0

Affected flag(s)

None

SZ [m].i

Skip if bit i of Data Memory is 0

Description

If bit i of the specified Data Memory is 0, the following instruction is skipped. As this re-

quires 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 in-

struction.

Operation

Skip if [m].i = 0

Affected flag(s)

None

TABRDC [m]

Read table (current page) to TBLH and Data Memory

Description

The low byte of the program code (current page) addressed by the table pointer (TBLP)

is moved to the specified Data Memory and the high byte moved to TBLH.

Operation

[m]

¬ program code (low byte)

TBLH

¬ program code (high byte)

Affected flag(s)

None

Rev. 1.20

144

September 15, 2011

HT45F23/HT45F43

8-Bit Flash MCU with Op Amps & Comparators

HT45F43 Datasheet(PDF) 144 Page - Holtek Semiconductor Inc

HT45F43 Datasheet(HTML) 144 Page - Holtek Semiconductor Inc

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