參數(shù)資料
型號(hào): M38039MFL-XXXWG
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, MROM, 16.8 MHz, MICROCONTROLLER, PBGA64
封裝: 6 X 6 MM, 0.65 MM PITCH, PLASTIC, FLGA-64
文件頁(yè)數(shù): 49/121頁(yè)
文件大?。?/td> 2071K
代理商: M38039MFL-XXXWG
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Rev.1.01
Jan 25, 2008
Page 31 of 117
REJ03B0212-0101
3803 Group (Spec.L)
(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.
相關(guān)PDF資料
PDF描述
M38039FFLHP 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PQFP64
M38039FFLWG 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PBGA64
M38039MFL-XXXKP 8-BIT, MROM, 16.8 MHz, MICROCONTROLLER, PQFP64
M38039FFLSP 8-BIT, FLASH, 16.8 MHz, MICROCONTROLLER, PDIP64
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