參數(shù)資料
型號(hào): M38004M8-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP64
封裝: 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁數(shù): 139/174頁
文件大小: 1752K
代理商: M38004M8-XXXSP
2-18
3800 GROUP USER’S MANUAL
APPLICATION
2.2 Timer
Fig. 2.2.18 Setting of related registers [Measurement of frequency]
0
PREY
Prescaler Y (Address : 2616)
Set “division ratio – 1”
255
TY
Timer Y (Address : 2716)
Set “255” to this register immediately before
counting pulse.
(After a certain time, this value is decreased by
the number of input pulses)
1
Timer Y interrupt enable bit : Interrupt disabled
ICON1
Interrupt control register 1 (Address : 3E16)
0
Judgment of Timer Y interrupt request bit
(When this bit is set to “1” at reading out
the count value of the Timer Y (address : 2716),
256 pulses or more are input (at setting 255 to
the Timer Y).)
IREQ1
Interrupt request register 1 (Address : 3C16)
1
CNTR1 active edge switch bits : Count at falling edge
Timer Y count stop bit : Count stop
Set to “0” at starting to count.
Timer Y operating mode bit : Event counter mode
TM
Timer XY mode register (Address : 2316)
b7
b0
0
1
Prescaler 12 (Address : 2016)
b7
b0
63
PRE12
7
T1
Timer 1 (Address : 2116)
b7
b0
b7
b0
b7
b0
b7
b0
0
Timer 1 interrupt enable bit : Interrupt enabled
b7
b0
1
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