參數(shù)資料
型號(hào)： M34286G2-XXXGP
元件分類(lèi)： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20
封裝： 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件頁(yè)數(shù)： 10/30頁(yè)
文件大小： 516K
代理商： M34286G2-XXXGP
Rev.1.00
Aug 06, 2008
page 16 of 64
REJ03B0251-0100
4286 Group
Fig. 17 Timer 2 count start/stop timing
(R2L)
(R2H)(R2L)
Timer 2 count value
(Reload register)
Timer 2 underflow signal
CARRYD
Timer 2 count start timing
Instruction clock
=f(XIN)/8
Machine cycle
TV2A instruction execution cycle (V20) ←1
XIN
XIN/2
(Count source selected)
0216 0116 0016
0216
0316
0216 0116 0016
0316
Timer 2 count value
(Reload register)
Timer 2 underflow signal
CARRYD
Timer 2 count stop timing
Machine cycle
TV2A instruction execution cycle (V20)←0
XIN/2
(Count source selected)
0216
0216 0116 0016
0216 0116 0016 0216 0116 0016 0316
0016
(R2H)
(R2L)
0316
(R2H)
(R2L)
(Note 1)
MiMi + 1
Mi + 2
MiMi + 1
Mi + 2
Instruction clock
=f(XIN)/8
Register V20
XIN
● In this case, the following is set;
To expand “H” interval of carrier wave is invalid (V23 = “0”),
Timer 2 carrier wave generation function is valid (V22=“1”),
Count source XIN/2 selected (V21=“1”),
“L” interval (0316) of carrier wave is set to reload register R2L
“H” interval (0216) of carrier wave is set to reload register R2H
Notes 1: When the carrier wave generation function is valid (V22=“1”), avoid a timing
when timer 2 underflows to stop timer 2. When the timer 2 count stop occurs
at the same timing with the timer 2 underflows, hazard may occur in the carrier
wave output waveform.
2: When the timer 2 is stopped during “H” output of carrier wave while the carrier
wave generation function is valid, it is stopped after the “H” interval set by
reload register R2H is output.
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