參數(shù)資料
型號: M30625MGN-XXXGP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP80
封裝: 14 X 14 MM, 0.65 MM PITCH, PLASTIC, QFP-80
文件頁數(shù): 15/67頁
文件大?。?/td> 2968K
代理商: M30625MGN-XXXGP
23
MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
CARRIER GENERATING CIRCUIT
The 4551 Group has a carrier generating circuit that generates
the transfer waveform by dividing the system clock (STCK) for
each remote control carrier wave. Each carrier waveform can be
output by setting the carrier wave selection register (C1).
Also, timer 1 can auto-control the carrier wave output from port
CARR by setting the carrier wave output control register (C2).
Fig. 22 Carrier wave selection register
Duty
Frequency
Carrier wave
Register C1
Setting value
No carrier wave
“L” fixed
C10
C11
C12
1/4
1/2
1/3
1/2
Output waveform
STCK/24
STCK/16
STCR instruction
SPCR instruction
C13
STCK/12
STCK/8
STCK
1/4
1/2
1/3
1/2
(at reset: 0 1 1 1 2, at power down: 0 1 1 1 2, W)
Carrier wave selection register C1
STCK/2
No available
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
“H”
“L”
00
0
00
0
1
00
1
0
00
1
01
0
01
0
1
01
1
10
0
10
0
1
10
1
0
10
1
11
0
11
0
1
01
1
0
11
1
0
11
1
“H”
“L”
Note:“W” represents write enabled.
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