參數(shù)資料
型號(hào)： 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(jī))
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(jī)微機(jī)）
文件頁(yè)數(shù)： 14/47頁(yè)
文件大?。?/td> 508K
代理商： M34280
MITSUBISHI
ELECTRIC
14
MITSUBISHI MICROCOMPUTERS
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
CARRIER GENERATING CIRCUIT
The 4280 Group can output the various carrier waveforms by
the carrier wave selection register C.
Set the contents of this register through register A with the TCA
instruction. The TAC instruction can be used to transfer the
contents of register C to register A. When the TCA instruction is
executed, the output latch of port CARR is cleared to “0.”
The carrier waveform selected by setting register C can be output
from port CARR by setting port CARR output latch to “1.” When
the CARR output latch is cleared to “0,” carrier wave output is
stopped and port CARR output is fixed to “L” level. The CARR
output latch can be set through bit 3 (A
3
) of register A with the
OCRA instruction.
The relationship between the setting value of register C and
selected waveform is described below.
Also, timer 1 can auto-control the carrier wave output from port
CARR by setting the timer control register V1.
Fig. 15 Carrier wave selection register
No carrier wave
C
2
1/4
1/2
1/2
1/3
1/2
OCRA
LA 0
LA 8
OCRA
(TCA)
f(X
IN
)/4
(Note)
1/2
Carrier wave selection register C (at reset: 111
2
, at RAM back-up: 111
2
)
Register C
setting value
C
1
C
0
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Output waveform
Carrier wave
Frequency
Duty
System clock/
12
System clock/
8
System clock
“L” level fixed
Note: This carrier wave can be used only when system clock f(X
IN
)/8 is selected.
The carrier wave output is fixed to “L” level when system clock f(X
IN
) is selected.
相關(guān)PDF資料
PDF描述
M35060-001SP CONNECTOR ACCESSORY
M35060 Character Pattern Display Control IC(字符點(diǎn)陣顯示控制芯片)
M35060-056SP SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
M35060-090SP SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
M35060-002SP CONNECTOR ACCESSORY
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