参数资料
型号: M34518E8SP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDIP32
封装: 8.90 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件页数: 104/162页
文件大小: 1149K
代理商: M34518E8SP
Rev.3.01
2005.06.15
page 44 of 157
REJ03B0008-0301
4518 Group
Fig. 33 Timer 4 count start/stop timing
(R4L)
(R4H)
(R4L)
Timer 4 count start timing
Waveform extension function of CNTR1 output “H” interval: Invalid (W42 = “0”),
CNTR1 output: valid (W43 = “1”),
Count source: XIN input selected (W40 = “0”),
Reload register R4L: “0316
Reload register R4H: “0216
Timer 4 count start timing
TW4A instruction execution cycle (W41)
← 1
0216 0116 0016
0216
0316
0216 0116 0016
0316
0216
0016
0016 0216 0116 0016 0316 0216 0116
0216
(R4H)
(R4L)
0116
(R4H)
(Note 1)
Notes 1: In order to stop timer 4 at CNTR1 output valid (W43 = “1”), avoid a timing when timer 4 underflows.
If these timings overlap, a hazard may occur in a CNTR1 output waveform.
2: At CNTR1 output valid, timer 4 stops after “H” interval of PWM signal set by reload register R4H is output.
Mi
Mi+1
Mi+2
Mi
Mi+1
Mi+2
0116
Timer 4 count value
(Reload register)
Timer 4
underflow signal
PWM signal
Machine cycle
XIN input
(count source selected)
System clock
f(STCK)=f(XIN)/4
Register W41
q
Timer 4 count stop timing
TW4A instruction execution cycle (W41)
← 0
Timer 4 count stop timing
Timer 4 count value
(Reload register)
Timer 4
underflow signal
PWM signal
Machine cycle
XIN input
(count source selected)
System clock
f(STCK)=f(XIN)/4
Register W41
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