參數(shù)資料
型號(hào): M34518M4-XXXSP
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP32
封裝: 8.90 X 28 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù): 97/160頁
文件大小: 1078K
代理商: M34518M4-XXXSP
Rev.3.01
2005.06.15
page 41 of 157
REJ03B0008-0301
4518 Group
Prescaler, Timer 1, Timer 2 and Timer 3 count start timing and
count time when operation starts
Count starts from the first rising edge of the count source (2) af-
ter Prescaler, Timer 1, Timer 2 and Timer 3 operations start (1).
Time to first underflow (3) is shorter (for up to 1 period of the
count source) than time among next underflow (4) by the timing
to start the timer and count source operations after count starts.
Fig. 29 Timer count start timing and count time when opera-
tion starts (Prescaler, Timer 1, Timer 2 and Timer 3)
Timer 4 count start timing and count time when operation starts
Count starts from the rising edge (2) after the first falling edge of
the count source, after Timer 4 operations start (1).
Time to first underflow (3) is different from time among next un-
derflow (4) by the timing to start the timer and count source
operations after count starts.
Fig. 30 Timer count start timing and count time when opera-
tion starts (Timer 4)
(1) Timer Start
Count Source
Timer value
Timer Underflow signal
3
2
1
032
103
(4)
(3)
(2)
2
(1) Timer Start
Count Source
Timer Value
Timer Underflow Signal
3
2
1
032
103
(4)
(3)
(2)
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