![](http://datasheet.mmic.net.cn/120000/M34280M1-XXXFP_datasheet_3558625/M34280M1-XXXFP_31.png)
Skip condition
Detailed description
Carry
flag
CY
31
30
Instruction code
Function
Mnemonic
Hexadecimal
notation
Number
of
words
Number
of
cycles
Parameter
Type of
instructions
D8 D7 D6 D5 D4 D3 D2 D1 D0
MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
Sets (1) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
Clears (0) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
Skips the next instruction when the contents of bit j (bit specified by the value j in the immediate field)
of M(DP) is “0.”
Skips the next instruction when the contents of register A is equal to the contents of M(DP).
Skips the next instruction when the contents of register A is equal to the value n in the immediate field.
Branch within a page : Branches to address a in the identical page.
Branch out of a page : Branches to address a in page p.
Branch within a page : Branches to address (a6 a5 a4 A3 A2 A1 A0) determined by replacing the low-
order 4 bits of the address a in the identical page with register A.
Branch out of a page : Branches to address (a6 a5 a4 A3 A2 A1 A0) determined by replacing the low-
order 4 bits of the address a in page p with register A.
–
SB j
RB j
SZB j
SEAM
SEA n
B a
BL p, a
BA a
BLA p, a
(Mj(DP))
← 1
j = 0 to 3
(Mj(DP))
← 0
j = 0 to 3
(Mj(DP)) = 0 ?
j = 0 to 3
(A) = (M(DP)) ?
(A) = n ?
n = 0 to 15
(PCL)
← a6–a0
(PCH)
← p
(PCL)
← a6–a0
(Note)
(PCL)
← (a6–a4, A3–A0)
(PCH)
← p
(PCL)
← (a6–a4, A3–A0)
(Note)
–
(Mj(DP)) = 0
j = 0 to 3
(A) = (M(DP))
(A) = n
n = 0 to 15
–
0010
111j1
j0
0010
011j1
j0
0001
000j1
j0
0001
00110
0001
00101
0101
1n3 n2 n1 n0
11a6 a5 a4 a3 a2 a1 a0
0001
1p3 p2 p1 p0
11a6 a5 a4 a3 a2 a1 a0
0000
00001
11a6 a5 a4 a3 a2 a1 a0
0000
10000
11a6 a5 a4 p3 p2 p1 p0
05
C
+j
04
C
+j
02
j
02
6
02
5
0B
n
18
a
+a
03
p
18
a
+a
00
1
18
a
+a
01
0
18
p
+a
1
2
1
2
1
2
1
2
Bit
operation
Comparison
operation
Note : p is 0 to 7 for M34280E1, and p is 0 to 7 for M34280M1.
Branch
operation
MACHINE INSTRUCTIONS (CONTINUED)