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參數(shù)資料
| 型號(hào)： | M38039GCH-XXXKP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁(yè)數(shù)： | 36/105頁(yè) |
| 文件大小： | 1416K |
| 代理商： | M38039GCH-XXXKP |
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REJ03B0166-0113 Rev.1.13
Aug 21, 2009
Page 34 of 100
3803 Group (Spec.H QzROM version)
(4) Pulse Width Measurement Mode
Mode selection
This mode can be selected by setting “11” to the timer X
operating mode bits (bits 1 and 0) and the timer Y operating
mode bits (bits 5 and 4) of the timer XY mode register (address
002316).
Explanation of operation
When the CNTR0 active edge switch bit (bit 2) or the CNTR1
active edge switch bit (bit 6) of the timer XY mode register
(address 002316) is “1”, the timer counts during the term of one
falling edge of CNTR0/CNTR1 pin input until the next rising
edge of input (“L” term). When it is “0”, the timer counts during
the term of one rising edge input until the next falling edge input
(“H” term).
Precautions
Set the double-function port of CNTR0/CNTR1 pin and port
P54/P55 to input in this mode.
The count operation can be stopped by setting “1” to the timer X
count stop bit (bit 3) and the timer Y count stop bit (bit 7) of the
timer XY mode register (address 002316). The interrupt request
bit is set to “1” each time the timer underflows.
Precautions when switching count source
When switching the count source by the timer 12, X and Y count
source selection bits, the value of timer count is altered in
inconsiderable amount owing to generating of thin pulses on the
count input signals.
Therefore, select the timer count source before setting the value
to the prescaler and the timer.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38049FFFP#U0 | 制造商:Renesas Electronics Corporation 功能描述: |
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