4559 datasheet(100/148 Pages) RENESAS

100 / 148 page

Rev.1.04

Aug 23, 2007

Page 100 of 146

REJ03B0188-0104

4559 Group

MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)

SNZT1

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

Instruc-

tion

code

Number of

words

Number of

cycles

Flag CY

Skip condition

000

00 2 28 0 16

V12 = 0 : (T1F) = 1

Opera-

tion:

V12 = 0 : (T1F) = 1 ?

(T1F)

← 0

V12 = 1 : SNZT1 = NOP

(V12 = bit 2 of interrupt control register V1)

Grouping:

Timer operation

Description: When V12 = 0 : Clears (0) to the T1F flag and skips the

next instruction when timer 1 interrupt request flag T1F is

“1”. When the T1F flag is “0,” executes the next instruction.

When V12 = 1 : This instruction is equivalent to the NOP

instruction.

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 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:

(VDF) = 1?

Grouping:

Other operation

Description: Skips the next instruction when voltage drop detection cir-

cuit flag VDF is “1”. Execute instruction when VDF is “0”.

After skipping, the contents of VDF remains unchanged.

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