HT46R46E datasheet(57/73 Pages) HOLTEK

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OR A,x

Logical OR immediate data to ACC

Description

Data in the Accumulator and the specified immediate data perform a bitwise logical OR op-

eration. The result is stored in the Accumulator.

Operation

ACC

¬ ACC ²OR² x

Affected flag(s)

ORM A,[m]

Logical OR ACC to Data Memory

Description

Data in the specified Data Memory and the Accumulator perform a bitwise logical OR oper-

ation. The result is stored in the Data Memory.

Operation

[m]

¬ ACC ²OR² [m]

Affected flag(s)

RET

Return from subroutine

Description

The Program Counter is restored from the stack. Program execution continues at the re-

stored address.

Operation

Program Counter

¬ Stack

Affected flag(s)

None

RET A,x

Return from subroutine and load immediate data to ACC

Description

The Program Counter is restored from the stack and the Accumulator loaded with the

specified immediate data. Program execution continues at the restored address.

Operation

Program Counter

¬ Stack

ACC

¬ x

Affected flag(s)

None

RETI

Return from interrupt

Description

The Program Counter is restored from the stack and the interrupts are re-enabled by set-

ting the EMI bit. EMI is the enable master (global) interrupt bit (bit 0; register INTC). If an in-

terrupt was pending when the RETI instruction is executed, the pending Interrupt routine

will be processed before returning to the main program.

Operation

Program Counter

¬ Stack

EMI

¬ 1

Affected flag(s)

None

RL [m]

Rotate Data Memory left

Description

The contents of the specified Data Memory are rotated left by 1 bit with bit 7 rotated into bit

Operation

[m].(i+1)

¬ [m].i; (i = 0~6)

[m].0

¬ [m].7

Affected flag(s)

None

RLA [m]

Rotate Data Memory left with result in ACC

Description

The contents of the specified Data Memory are rotated left by 1 bit with bit 7 rotated into bit

0. The rotated result is stored in the Accumulator and the contents of the Data Memory re-

main unchanged.

Operation

ACC.(i+1)

¬ [m].i; (i = 0~6)

ACC.0

¬ [m].7

Affected flag(s)

None

HT46R46E/C46E/R47E/C47E/R48AE/C48AE/R49E

Rev. 1.20

August 15, 2007

HT46R46E Datasheet(PDF) 57 Page - Holtek Semiconductor Inc

HT46R46E Datasheet(HTML) 57 Page - Holtek Semiconductor Inc

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