4502_M datasheet(85/214 Pages) RENESAS

Part #	4502_M

Description	4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

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Manufacturer	RENESAS [Renesas Technology Corp]

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Skip condition

Number of

cycles

Number of

words

Instruction

code

D9

D0

Flag CY

2

16

Skip condition

Number of

cycles

Number of

words

Instruction

code

D9

D0

Flag CY

2

16

Skip condition

Number of

cycles

Number of

words

Instruction

code

D9

D0

Flag CY

2

16

Skip condition

Number of

cycles

Number of

words

Instruction

code

D9

D0

Flag CY

2

16

INSTRUCTIONS

1-73

4502 Group

HARDWARE

Rev.2.01

Feb 02, 2005

REJ09B0193-0201

SEA n (Skip Equal, Accumulator with immediate data n)

0000100101

025

22

–

(A) = n

Grouping:

Comparison operation

Description: Skips the next instruction when the con-

tents of register A is equal to the value n in

the immediate field.

Executes the next instruction when the con-

tents of register A is not equal to the value n

in the immediate field.

Operation:

(A) = n ?

n = 0 to 15

SEAM (Skip Equal, Accumulator with Memory)

0000100110

026

11

–

(A) = (M(DP))

Grouping:

Comparison operation

Description: Skips the next instruction when the con-

tents of register A is equal to the contents of

M(DP).

Executes the next instruction when the con-

tents of register A is not equal to the

contents of M(DP).

Operation:

(A) = (M(DP)) ?

SCP (Set Port C)

1010001101

28D

11

–

Grouping:

Input/Output operation

Description: Sets (1) to port C.

Operation:

(C)

← 1

SD (Set port D specified by register Y)

0000010101

015

11

–

Grouping:

Input/Output operation

Description: Sets (1) to a bit of port D specified by register Y.

Note:

Set 0 to 5 to register Y because port D is six

ports (D0–D5).

When values except above are set to regis-

ter Y, this instruction is equivalent to the

NOP instruction.

Operation:

(D(Y))

← 1

(Y) = 0 to 5

2

16

000111nnnn

07n

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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