参数资料
型号: M34551E8FP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件页数: 11/155页
文件大小: 1329K
代理商: M34551E8FP
APPLICATION
2.4 Carrier generating circuit
2-30
4551 Group User’s Manual
Fig. 2.4.4 Carrier wave output interval setting example
aa
a
aa
d
a
C20
a
aa
d
a
16a
8a
a
b
c
d
a
w
v
a
Timer 1 start
Timer 1 underflow
Reload register R1
Port CARR output
Carrier wave output start ( STCR)
Initial value “a” is set to timer 1.
The carrier wave output is started with the STCR instruction.
C20 is set to “0” to continue the carrier wave output.
After timer 1 underflow is counted to 15 times by software, C20 is set to “1.”
After CARR output is turned OFF by timer 1 underflow, C20 is set to “0.”
After timer 1 underflow is counted to 7 times by software, C20 is set to “1.”
The next CARR OFF interval “b” is set to reload register R1.
The next CARR output interval “c” is set to reload register R1.
The next CARR OFF interval “d” is set to reload register R1.
The next CARR output interval “a” is set to reload register R1.
b
c
b
c
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