4501 datasheet(74/212 Pages) RENESAS

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Number of

cycles

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Instruction

code

Flag CY

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Number of

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Number of

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Instruction

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Flag CY

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Number of

cycles

Number of

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Instruction

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Flag CY

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Number of

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Number of

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Instruction

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Flag CY

INSTRUCTIONS

1-62

Rev.2.01

Feb 07, 2005

4501 Group

HARDWARE

REJ09B0192-0201

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 un-

changed.

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 register

A and carry flag CY.

Operation:

(A)

← (A) + (M(DP)) + (CY)

(CY)

← Carry

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