455A Datasheet, PDF(99/148 Page) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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455A Datasheet, PDF (99/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

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455A Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

SBK (Set BanK flag)

Instruc-

tion

code

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

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- When TABPp instruction is executed, p6 1

tion:

Grouping: Arithmetic operation

Description: Sets referring data area to pages 64 to 127 when the

TABPp instruction is executed. This instruction is valid only

for the TABPp instruction.

Note:

This instruction cannot be used in M3455AG8.

SC (Set Carry flag)

Instruc-

tion

code

0 0 0 0 0 0 0 1 1 1 2 0 0 7 16

Number of

words

Number of

cycles

Flag CY

Opera- (CY) â 1

tion:

Grouping: Arithmetic operation

Description: Sets (1) to carry flag CY.

Skip condition

SCP (Set Port C)

Instruc-

tion

code

1 0 1 0 0 0 1 1 0 1 2 2 8 D 16

Number of

words

Number of

cycles

Flag CY

Opera- (C) â 1

tion:

Grouping: Input/Output operation

Description: Sets (1) to port C.

Skip condition

SD (Set port D specified by register Y)

Instruc-

tion

code

0 0 0 0 0 1 0 1 0 1 2 0 1 5 16

Number of

words

Number of

cycles

Flag CY

Skip condition

Opera- (D(Y)) â 1

tion: (Y) = 0 to 7

Grouping: Input/Output operation

Description: Sets (1) 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.

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

Instruc-

tion

code

0 0 0 0 1 0 0 1 0 1 2 0 2 5 16

Number of

words

Number of

cycles

Flag CY

Skip condition

(A) = n

n = 0 to 15

0 0 0 1 1 1 n n n n 2 0 7 n 16 Grouping: Comparison operation

Opera- (A) = n ?

tion: n = 0 to 15

Description: Skips the next instruction when the contents of register A is

equal to the value n in the immediate field.

Executes the next instruction when the contents of register

A is not equal to the value n in the immediate field.

Rev.1.01 Feb 15, 2008 Page 99 of 146

REJ03B0224-0101

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