- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370838 > M34282E2 (Mitsubishi Electric Corporation) SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER PDF資料下載
參數(shù)資料
| 型號(hào)： | M34282E2 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片4位微機(jī)的CMOS |
| 文件頁數(shù)： | 16/70頁 |
| 文件大小： | 560K |
| 代理商： | M34282E2 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁
MITSUBISHI
ELECTRIC
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
16
MITSUBISHI MICROCOMPUTERS
4282 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
LOGIC OPERATION FUNCTION
The 4282 Group has the 4-bit logic operation function. The logic
operation between the contents of register A and the low-order
4 bits of register E is performed and its result is stored in register
A.
Each logic operation can be selected by setting logic operation
selection register LO.
Set the contents of this register through register A with the TLOA
instruction. The logic operation selected by register LO is
executed with the LGOP instruction.
Table 5 shows the logic operation selection register LO.
Table 5 Logic operation selection register LO
at reset : 00
2
at RAM back-up : 00
2
W
L
O
1
0
0
1
1
L
O
0
0
1
0
1
LO
1
LO
0
Logic operation selection bits
Logic operation selection register LO
Logic operation function
Exclusive logic OR operation (XOR)
OR operation (OR)
AND operation (AND)
Not available
Note: “W” represents write enabled.
WATCHDOG TIMER
Watchdog timer provides a method to reset and restart the system
when a program runs wild. Watchdog timer consists of 14-bit
timer (WDT) and watchdog timer flags (WDF1, WDF2).
Watchdog timer downcounts the instruction clock (INSTCK) as
the count source immediately after system is released from reset.
When the timer WDT count value becomes 0000
16
and underflow
occurs, the WDF1 flag is set to “1.” Then, when the WRST
instruction is not executed before the timer WDT counts 16383,
system reset is performed.
Execute the WRST instruction at period of 16383 machine cycle
or less to keep the microcomputer operation normal.
Timer WDT is also used for generation of oscillation stabilization
time. When system is returned from reset and from RAM back-
up mode by key-input, software starts after the stabilization
oscillation time until timer WDT downcounts to 3E00
16
elapses.
Fig. 17 Watchdog timer function
Value of timer WDT
WDF2 flag
WRST
instruction
execution
S
r
e
y
s
e
t
e
t
m
s
Return
3
E
0
0
1
6
0
0
0
1
6
W
D
F
1
f
l
a
g
3
F
F
F
1
6
S
r
e
y
s
e
t
e
t
m
s
S
o
f
t
w
a
r
e
s
t
a
r
t
Software start
S
o
f
t
w
a
r
e
s
t
a
r
t
POF
instruction
execution
In
t
e
r
n
a
l
r
e
s
e
t
s
i
g
n
a
l
“
1
”
“
0
“
1
“
0
”
”
”
“
H
”
“
L
”
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M34282E2GP | IC,CLK BUFFER,160MHZ,4 OUTPUT |
| M34501E4FP | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34501M2 | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34501M4 | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34512M2 | SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34282E2GP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34282M1 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34282M1-XXXGP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34282M2 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34282M2-064GP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。