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參數(shù)資料
| 型號： | M34280 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | Single-Chip 4-Bit CMOS Microcomputer for Infrared Remote Control Transmitters(用于紅外線遠(yuǎn)程遙控發(fā)送器的4位單片機) |
| 中文描述： | 單芯片4位CMOS紅外遙控發(fā)射器（用于紅外線遠(yuǎn)程遙控發(fā)送器的4位單片機微機） |
| 文件頁數(shù)： | 21/47頁 |
| 文件大小： | 508K |
| 代理商： | M34280 |
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MITSUBISHI
ELECTRIC
21
MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
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.
Program counter
Make sure that the program counter does not specify after the
last page of the built-in ROM.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34280E1FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS |
| M34280E1GP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS |
| M34280M1 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS |
| M34280M1-060FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS |
| M34280M1-082GP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS |
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