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參數(shù)資料
| 型號： | M34250E2-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, OTPROM, 1.1 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | PLASTIC, SOP-20 |
| 文件頁數(shù)： | 26/58頁 |
| 文件大?。?/td> | 331K |
| 代理商： | M34250E2-XXXFP |
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MITSUBISHI
ELECTRIC
32
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
SYMBOL
The symbols shown below are used in the following list of instruction function and the machine instructions.
Symbol
A
B
DR
E
V1
K0
PU0
LO
X
Y
DP
PC
PCH
PCL
SK
SP
CY
R1
T1
T1F
INTE
EXF0
P
Contents
Register A (4 bits)
Register B (4 bits)
Register D (3 bits)
Register E (8 bits)
Timer control register V1 (4 bits)
Key-on wakeup control register K0 (4 bits)
Pull-up control register PU0 (2 bits)
Logic operation selection register LO (2 bits)
Register X (2 bits)
Register Y (4 bits)
Data pointer (6 bits)
(It consists of registers X and Y)
Program counter (11 bits)
High-order 4 bits of program counter
Low-order 7 bits of program counter
Stack register (11 bits ! 4)
Stack pointer (2 bits)
Carry flag
Timer 1 reload register
Timer 1
Timer 1 interrupt request flag
Interrupt enable flag
External interrupt request flag
Power down flag
Contents
Port D (4 bits)
Port F (2 bits)
Port G (4 bits)
Port S (4 bits)
Port K (1 bit)
Port C (1 bit)
Hexadecimal variable
Hexadecimal constant which represents the
immediate value
Hexadecimal constant which represents the
immediate value
Binary notation of hexadecimal variable A
(same for others)
Direction of data movement
Data exchange between a register and memory
Decision of state shown before “?”
Contents of registers and memories
Negate, Flag unchanged after executing
instruction
RAM address pointed by the data pointer
Label indicating address a6 a5 a4 a3 a2 a1 a0
in page p3 p2 p1 p0
Hex. C + Hex. number x (also same for others)
Symbol
D
F
G
S
K
C
x
y
p
n
j
A3A2A1A0
←
?
( )
—
M(DP)
a
p, a
C
+
x
Note : The 4250 Group just invalidates the next instruction when a skip is performed. The contents of program counter is not
increased by 2. Accordingly, the number of cycles does not change even if skip is not performed. However, the cycle count
becomes “1” if the TABP p, RT, or RTS instruction is skipped.
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