4559 Datasheet, PDF(96/148 Page) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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4559 Datasheet, PDF (96/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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4559 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

RC (Reset Carry flag)

Instruc-

tion

code

0 0 0 0 0 0 0 1 1 0 2 0 0 6 16

Number of

words

Number of

cycles

Flag CY

Opera- (CY) â 0

tion:

Grouping: Arithmetic operation

Description: Clears (0) to carry flag CY.

Skip condition

RCP (Reset Port C)

Instruc-

tion

code

1 0 1 0 0 0 1 1 0 0 2 2 8 C 16

Number of

words

Number of

cycles

Flag CY

Opera- (C) â 0

tion:

Grouping: Input/Output operation

Description: Clears (0) to port C.

Skip condition

RD (Reset port D specified by register Y)

Instruc-

tion

code

0 0 0 0 0 1 0 1 0 0 2 0 1 4 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (D(Y)) â 0

tion: (Y) = 0 to 7

Grouping: Input/Output operation

Description: Clears (0) to a bit of port D specified by register Y.

Note:

(Y) = 0 to 7.

Do not execute this instruction if values except above are

set to register Y.

RT (ReTurn from subroutine)

Instruc-

tion

code

0 0 0 1 0 0 0 1 0 0 2 0 4 4 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (PC) â (SK(SP))

tion: (SP) â (SP) â1

Grouping: Return operation

Description: Returns from subroutine to the routine called the subrou-

tine.

Rev.1.04 Aug 23, 2007 Page 96 of 146

REJ03B0188-0104

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