4571 datasheet(80/126 Pages) RENESAS

номер детали	4571

подробное описание детали	SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

PDF	126 Pages

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производитель	RENESAS [Renesas Technology Corp]

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80 / 126 page

Rev.1.02

May 25, 2007

Page 80 of 124

REJ03B0179-0102

4571 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

(Reset Carry flag)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

10 2 00 6 16

110

Opera-

tion:

(CY)

← 0

Grouping:

Arithmetic operation

Description: Clears (0) to carry flag CY.

RCP

(Reset Port C)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

00 2 28 C 16

Opera-

tion:

(C)

← 0

Grouping:

Input/Output operation

Description: Clears (0) to port C.

(Reset port D specified by register Y)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

001

00 2 01 4 16

Opera-

tion:

(D(Y))

← 0

However,

(Y) = 0 to 4

Grouping:

Input/Output operation

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

Note:

(Y) = 0 to 4.

Do not execute this instruction if values except above are

set to register Y.

(ReTurn from subroutine)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

100

00 2 04 4 16

Opera-

tion:

(PC)

← (SK(SP))

(SP)

← (SP) −1

Grouping:

Return operation

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

tine.

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