參數(shù)資料
型號: M34551E8FP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件頁數(shù): 87/155頁
文件大小: 1329K
代理商: M34551E8FP
FUNCTIONAL BLOCK OPERATIONS
4551 Group User’s Manual
HARDWARE
1-25
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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