4571 datasheet(85/126 Pages) RENESAS

85 / 126 page

Rev.1.02

May 25, 2007

Page 85 of 124

REJ03B0179-0102

4571 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

SNZT2

(Skip if Non Zero condition of Timer 2 interrupt request flag)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

01 2 28 1 16

V13 = 0 : (T2F) = 1

Opera-

tion:

V13 = 0 : (T2F) = 1 ?

(T2F)

← 0

V13 = 1 : SNZT2 = NOP

(V13 = bit 3 of interrupt control register V1)

Grouping:

Timer operation

Description: When V13 = 0 : Clears (0) to the T2F flag and skips the

next instruction when timer 2 interrupt request flag T2F is

“1”. When the T2F flag is “0”, executes the next instruction.

When V13 = 1 : This instruction is equivalent to the NOP

instruction.

SNZT3

(Skip if Non Zero condition of Timer 3 interrupt request flag)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

10 2 28 2 16

V20 = 0 : (T3F) = 1

Opera-

tion:

V20 = 0 : (T3F) = 1 ?

(T3F)

← 0

V20 = 1 : SNZT3 = NOP

Grouping:

Timer operation

Description: When V20 = 0 : Clears (0) to the T3F flag and skips the

next instruction when timer 3 interrupt request flag T3F is

“1”. When the T3F flag is “0”, executes the next instruction.

When V20 = 1 : This instruction is equivalent to the NOP

instruction.

SNZVD

(Skip if Non Zero condition of Voltage Detector interrupt request flag)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

10 2 28 A 16

V23 = 0 : (VDF) = 1

Opera-

tion:

V23 = 0 : (VDF) = 1?

V23 = 1 : SNZVD = NOP

Grouping:

Other operation

Description: When V23 = 0 : Skips the next instruction when voltage

detector interrupt request flag VDF is “1”. After skipping,

clears (0) to the VDF flag. The VDF flag is not cleared to

“0”.

When V23 = 1 : This instruction is equivalent to the NOP

instruction.

SRST

(System ReSet)

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

01 2 00 1 16

Opera-

tion:

System reset

Grouping:

Other operation

Description: System reset occurs.

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