Rev.1.04
REJ03B0188-0104
Aug 23, 2007
Page 100 of 146
4559 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SNZT1
(Skip if Non Zero condition of Timer 1 interrupt request flag)
Instruc-
tion
code
1
0
1
0
0
0
0
0
D
9
D
0
0 2
Number of
words
Number of
cycles
Flag CY
Skip condition
0
2
8
0 16
1
1
-
V1
2
= 0 : (T1F) = 1
Opera-
tion:
V1
2
= 0 : (T1F) = 1
(T1F)
←
0
V1
2
= 1 : SNZT1 = NOP
(V1
2
= bit 2 of interrupt control register V1)
Grouping:
Description: When V1
2
= 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 V1
2
= 1 : This instruction is equivalent to the NOP
instruction.
Timer operation
SNZT2
(Skip if Non Zero condition of Timer 2 interrupt request flag)
Instruc-
tion
code
1
0
1
0
0
0
0
0
D
9
D
0
1 2
Number of
words
Number of
cycles
Flag CY
Skip condition
0
2
8
1 16
1
1
-
V1
3
= 0 : (T2F) = 1
Opera-
tion:
V1
3
= 0 : (T2F) = 1
(T2F)
←
0
V1
3
= 1 : SNZT2 = NOP
(V1
3
= bit 3 of interrupt control register V1)
Grouping:
Description: When V1
3
= 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 V1
3
= 1 : This instruction is equivalent to the NOP
instruction.
Timer operation
SNZT3
(Skip if Non Zero condition of Timer 3 interrupt request flag)
Instruc-
tion
code
1
0
1
0
0
0
0
0
D
9
D
0
0 2
Number of
words
Number of
cycles
Flag CY
Skip condition
1
2
8
2 16
1
1
-
V2
0
= 0 : (T3F) = 1
Opera-
tion:
V2
0
= 0 : (T3F) = 1
(T3F)
←
0
V2
0
= 1 : SNZT3 = NOP
Grouping:
Description: When V2
0
= 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 V2
0
= 1 : This instruction is equivalent to the NOP
instruction.
Timer operation
SNZVD
(Skip if Non Zero condition of Voltage Detector flag)
Instruc-
tion
code
1
0
1
0
0
0
1
D
9
D
0
0 2
Number of
words
Number of
cycles
Flag CY
Skip condition
0
1
2
8
A 16
1
1
-
V2
3
= 0 : (VDF) = 1
Opera-
tion:
(VDF) = 1
Grouping:
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.
Other operation