參數(shù)資料
型號(hào)： M34282M2
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(yè)數(shù)： 22/70頁(yè)
文件大?。?/td> 560K
代理商： M34282M2
MITSUBISHI
ELECTRIC
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
22
MITSUBISHI MICROCOMPUTERS
4282 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
LIST OF PRECAUTIONS
Noise and latch-up prevention
Connect a capacitor on the following condition to prevent noise
and latch-up;
connect a bypass capacitor (approx. 0.01
μ
F) between pins
V
DD
and V
SS
at the shortest distance,
equalize its wiring in width and length, and
use the thickest wire.
In the One Time PROM version, port E
2
is also used as V
PP
pin. Connect this pin to V
SS
through the resistor about 5 k
which is assigned to E
2
/V
PP
pin as close as possible at the
shortest distance.
Notes on unused pins
(Note in order to set the output latch to
“
0
”
to make pins open)
After system is released from reset, a port is in a high-
impedance state until the output latch of the port is set to
“
0
”
by software.
Accordingly, the voltage level of pins is undefined and the
excess of the supply current may occur.
To set the output latch periodically is recommended
because the value of output latch may change by noise or
a program run away (caused by noise).
(Note when connecting to V
SS
and V
DD
)
Connect the unused pins to V
SS
and V
DD
at the shortest
distance and use the thick wire against noise.
Timer
Count source
Stop timer 1 counting to change its count source.
Watchdog timer
Be sure that the timing to execute the WRST instruction in
order to operate WDT efficiently.
Writing to reload register R1
When writing data to reload register R1 while timer 1 is
operating, avoid a timing when timer 1 underflows.
Stop of timer 2
Avoid a timing when timer 2 underflows to stop timer 2.
Writing to reload register R2H
When writing data to reload register R2H while timer 2 is
operating, avoid a timing when timer underflows.
Timer 2 carrier wave output function
When to expand
“
H
”
interval of carrier wave is valid, set
“
1
”
or more to reload register R2H.
Program counter
Make sure that the program counter does not specify after the
last page of the built-in ROM.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M34282M2-064GP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34282M2-XXXGP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34282T5-OPT 制造商:Renesas Electronics Corporation 功能描述:DEV OPTION BOARD FOR 4282 GROUP/PC4400 - Boxed Product (Development Kits)
M34283 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
M34283G2GP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
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