![](http://datasheet.mmic.net.cn/30000/M3455AG8FP_datasheet_2359528/M3455AG8FP_103.png)
Rev.1.02
Nov 26, 2008
REJ03B0224-0102
455A Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
SNZT1
(Skip if Non Zero condition of Timer 1 interrupt request flag)
Instruc-
tion
code
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
01
000
00
00 2 28 0 16
11
-
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
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
01
000
00
01 2 28 1 16
11
-
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
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
01
000
00
10 2 28 2 16
11
-
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
D9
D0
Number of
words
Number of
cycles
Flag CY
Skip condition
1
01
000
10
10 2 28 A 16
11
-
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.