HT68F20 datasheet(178/210 Pages) HOLTEK

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RLC [m]

Rotate Data Memory left through Carry

Description

The contents of the specified Data Memory and the carry flag are rotated left by 1 bit. Bit 7

replaces the Carry bit and the original carry flag is rotated into bit 0.

Operation

[m].(i+1)

¬ [m].i; (i = 0~6)

[m].0

¬ C

¬ [m].7

Affected flag(s)

RLCA [m]

Rotate Data Memory left through Carry with result in ACC

Description

Data in the specified Data Memory and the carry flag are rotated left by 1 bit. Bit 7 replaces

the Carry bit and the original carry flag is rotated into the bit 0. The rotated result is stored in

the Accumulator and the contents of the Data Memory remain unchanged.

Operation

ACC.(i+1)

¬ [m].i; (i = 0~6)

ACC.0

¬ C

¬ [m].7

Affected flag(s)

RR [m]

Rotate Data Memory right

Description

The contents of the specified Data Memory are rotated right by 1 bit with bit 0 rotated into

bit 7.

Operation

[m].i

¬ [m].(i+1); (i = 0~6)

[m].7

¬ [m].0

Affected flag(s)

None

RRA [m]

Rotate Data Memory right with result in ACC

Description

Data in the specified Data Memory and the carry flag are rotated right by 1 bit with bit 0 ro-

tated into bit 7. The rotated result is stored in the Accumulator and the contents of the Data

Memory remain unchanged.

Operation

ACC.i

¬ [m].(i+1); (i = 0~6)

ACC.7

¬ [m].0

Affected flag(s)

None

RRC [m]

Rotate Data Memory right through Carry

Description

The contents of the specified Data Memory and the carry flag are rotated right by 1 bit. Bit 0

replaces the Carry bit and the original carry flag is rotated into bit 7.

Operation

[m].i

¬ [m].(i+1); (i = 0~6)

[m].7

¬ C

¬ [m].0

Affected flag(s)

RRCA [m]

Rotate Data Memory right through Carry with result in ACC

Description

Data in the specified Data Memory and the carry flag are rotated right by 1 bit. Bit 0 re-

places the Carry bit and the original carry flag is rotated into bit 7. The rotated result is

stored in the Accumulator and the contents of the Data Memory remain unchanged.

Operation

ACC.i

¬ [m].(i+1); (i = 0~6)

ACC.7

¬ C

¬ [m].0

Affected flag(s)

HT68F20/HT68F30/HT68F40/HT68F50/HT68F60

Rev. 1.00

178

November 3, 2009

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