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參數(shù)資料
| 型號： | M38049FFHHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 41/118頁 |
| 文件大?。?/td> | 1202K |
| 代理商： | M38049FFHHP |
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Rev.1.01
Jan 25, 2005
page 27 of 114
REJ03B0131-0101Z
3804 Group (Spec. H)
(3) Event counter mode
qMode selection
This mode can be selected by setting “10
”
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).
qExplanation of operation
The operation is the same as the timer mode’s except that the
timer counts signals input from the CNTR0 or CNTR1 pin. The
valid edge for the count operation depends on 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). When it is “0”, the
rising edge is valid. When it is “1”, the falling edge is valid.
sPrecautions
Set the double-function port of CNTR0/CNTR1 pin and port P54/
P55 to input in this mode.
(4) Pulse width measurement mode
qMode 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).
qExplanation of operation
When the CNTR0 active edge switch bit (bit 2) or the CNTR1 ac-
tive 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).
sPrecautions
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 incon-
siderable 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 |
|---|---|
| M38049FFLHP#U0 | 制造商:Renesas Electronics Corporation 功能描述: |
| M38049RLSS | 功能描述:DEV EMULATOR CHIP RAM 2KB 64SDIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 內(nèi)電路編程器、仿真器以及調(diào)試器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 19/Jul/2010 標(biāo)準包裝:1 系列:* 類型:* 適用于相關(guān)產(chǎn)品:* 所含物品:* |
| M3806 | 功能描述:電纜固定件和配件 LTSCG 625 BLACK RoHS:否 制造商:Heyco 類型:Cable Grips, Liquid Tight 材料:Nylon 顏色:Black 安裝方法:Cable 最大光束直徑:11.4 mm 抗拉強度: |
| M3806 BK001 | 制造商:Alpha Wire Company 功能描述:CBL 8COND 18AWG BLK 1000' |
| M3806 BK002 | 制造商:Alpha Wire Company 功能描述:CBL 8COND 18AWG BLK 500' |
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