4501 datasheet(87/212 Pages) RENESAS

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Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

Skip condition

Number of

cycles

Number of

words

Instruction

code

Flag CY

INSTRUCTIONS

1-75

4501 Group

HARDWARE

Rev.2.01

Feb 07, 2005

REJ09B0192-0201

SNZP (Skip if Non Zero condition of Power down flag)

0000000011

003

–

(P) = 1

Grouping:

Other operation

Description: Skips the next instruction when the P flag is

“1”.

After skipping, the P flag remains un-

changed.

Executes the next instruction when the P

flag is “0.”

SNZT1 (Skip if Non Zero condition of Timer 1 inerrupt request flag)

1010000000

280

–

V12 = 0: (T1F) = 1

Grouping:

Timer operation

Description: When V12 = 0 : Skips the next instruction

when timer 1 interrupt request flag T1F is

“1.” After skipping, clears (0) to the T1F flag.

When the T1F flag is “0,” executes the next

instruction.

When V12 = 1 : This instruction is equivalent

to the NOP instruction.

Operation:

V12 = 0: (T1F) = 1 ?

After skipping, (T1F)

← 0

V12 = 1: SNZT1 = NOP

(V12 = bit 2 of interrupt control register V1)

Operation:

(P) = 1 ?

SNZCP (Skip if Non Zero condition of Port C)

1010001001

289

–

Grouping:

Input/Output operation

Description: Skips the next instruction when the contents

of port C is “1.”

Executes the next instruction when the con-

tents of port C is “0.”

Operation:

SNZI0 (Skip if Non Zero condition of external 0 Interrupt input pin)

0000111010

03A

–

I12 = 0 : (INT) = “L”

I12 = 1 : (INT) = “H”

Grouping:

Interrupt operation

Description: When I12 = 0 : Skips the next instruction

when the level of INT pin is “L.” Executes the

next instruction when the level of INT pin is

“H.”

When I12 = 1 : Skips the next instruction

when the level of INT pin is “H.” Executes

the next instruction when the level of INT pin

is “L.”

Operation:

I12 = 0 : (INT) = “L” ?

I12 = 1 : (INT) = “H” ?

(I12 : bit 2 of the interrupt control register I1)

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

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