参数资料
型号: M34238MK-XXXGP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封装: PLASTIC, SOP-20
文件页数: 15/41页
文件大小: 243K
代理商: M34238MK-XXXGP
Parameter
Type of
instruction
Mnemonic
Instruction code
Hexadecimal
notation
D8
D7
D6
D5
D4
D3
D2
D1
D0
Number
of
w
ords
Number
of
cycles
Functions
MITSUBISHI MICROCOMPUTERS
4238 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
Ar
ithmetic
oper
ations
Comparisons
1
3
1
2
1
2
010
11
n3
n2
n1
n0
010
p2
p1
p0
000
001
010
000
001
011
010
10
n3
n2
n1
n0
000
111
000
110
000
101
111
000
011
100
000
011
101
001
011
1
j1
j0
001
1
j1
j0
000
100
0
j1
j0
000
100
110
000
100
101
010
11
n3
n2
n1
n0
0B
n
09p
00
A
00
B
0A
n
007
006
02
F
01
C
01
D
05
C
+
j
04
C
+
j
02
j
026
025
0B
n
LA n
TABP p
AM
AMC
A n
SC
RC
SZC
CMA
RAR
SB j
RB j
SZB j
SEAM
SEA n
(A)
← n, where n = 0 to 15
(SK(SP))
← (PC), (SP) ← (SP) + 1
(PCH)
← p
(PCL)
← DR2 – DR0 A3 – A0
(B)
← ( ROM(PC)) 7 to 4
(A)
← ( ROM(PC)) 3 to 0
(SP)
← (SP) – 1, (PC) ← (SK(SP))
where p = 0 to 5
(A)
← (A) + (M(DP))
(A)
← (A) + (M(DP)) + (CY)
(CY)
← Carry
(A)
← (A) + n, where n = 0 to 15
(CY)
← 1
(CY)
← 0
(CY) = 0 ?
___
(A)
← (A)
→ CY → A3A2A1A0
(Mj(DP))
← 1, where j = 0 to 3
(Mj(DP))
← 0, where j = 0 to 3
(Mj(DP))
= 0 ?, where j = 0 to 3
(A) = (M(DP))?
(A) = n ?, where n = 0 to 15
Bit
operations
21
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