HT827A0 datasheet(39/49 Pages) HOLTEK

tên linh kiện	HT827A0

Giải thích chi tiết về linh kiện	8-Bit Microcontroller with Voice ROM

PDF	49 Pages

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HT827A0

March 15, 2000

RET

Return from subroutine

Description

The program counter is restored from the stack. This is a two-cycle instruc-

tion.

Operation

PC ¬ Stack

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

RET A,x

Return and place immediate data in the accumulator

Description

The program counter is restored from the stack and the accumulator is

loaded with the specified 8-bit immediate data.

Operation

PC ¬ Stack

ACC ¬ x

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

RETI

Return from interrupt

Description

The program counter is restored from the stack, and interrupts enabled by

setting the EMI bit. EMI is an enable master (global) interrupt bit (bit 0; reg-

ister INTC).

Operation

PC ¬ Stack

EMI ¬ 1

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

RL [m]

Rotate data memory left

Description

The contents of the specified data memory are rotated 1 bit to the left with

bit 7 rotated into bit 0.

Operation

[m].(i+1) ¬ [m].i; [m].i:bit i of the data memory (i=0~6)

[m].0 ¬ [m].7

Affected flag(s)

TC2 TC1

¾¾¾¾¾¾

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