4518 datasheet(91/160 Pages) RENESAS

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Instruction

code

Flag CY

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Number of

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Instruction

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Flag CY

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Flag CY

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Number of

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Instruction

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Flag CY

Rev.3.01

2005.06.15

page 91 of 157

REJ03B0008-0301

4518 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET)

A n (Add n and accumulator)

000110nnnn

06n

–

Overflow = 0

Grouping:

Arithmetic operation

Description: Adds the value n in the immediate field to

The contents of carry flag CY remains unchanged.

Skips the next instruction when there is no

overflow as the result of operation.

Executes the next instruction when there is

overflow as the result of operation.

Operation:

(A)

← (A) + n

n = 0 to 15

ADST (A/D conversion STart)

1010011111

29F

–

Grouping:

A/D conversion operation

Description: Clears (0) to A/D conversion completion

flag ADF, and the A/D conversion at the A/D

conversion mode (Q13 = 0) or the compara-

tor operation at the comparator mode (Q13

= 1) is started.

Operation:

(ADF)

← 0

Q13 = 0: A/D conversion starting

Q13 = 1: Comparator operation starting

(Q13 : bit 3 of A/D control register Q1)

AM (Add accumulator and Memory)

0000001010

00A

–

Grouping:

Arithmetic operation

Description: Adds the contents of M(DP) to register A.

Stores the result in register A. The contents

of carry flag CY remains unchanged.

Operation:

(A)

← (A) + (M(DP))

AMC (Add accumulator, Memory and Carry)

0000001011

00B

0/1

–

Grouping:

Arithmetic operation

Description: Adds the contents of M(DP) and carry flag

CY to register A. Stores the result in regis-

ter A and carry flag CY.

Operation:

(A)

← (A) + (M(DP)) + (CY)

(CY)

← Carry

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