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參數(shù)資料
| 型號： | MB90V495G |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller |
| 中文描述： | 16位微控制器專有 |
| 文件頁數(shù)： | 34/78頁 |
| 文件大?。?/td> | 746K |
| 代理商： | MB90V495G |
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MB90895 Series
34
16-bit free-run timer
Counter value of 16-bit free-run timer is used as reference time (base time) of input capture.
Input capture
Input capture detects rising edge, falling edge or both edges and retains a counter value of 16-bit free-run timer.
Detection of edge on input signal is allowed to generate interrupt.
16-bit free-run timer block diagram
Detailed pin assignment on block diagram
The 16-bit input/output timer includes a 16-bit free-run timer. Interrupt request number of the 16-bit free-run
timer is as follows:
Interrupt request number: #19 (13
H
)
Prescaler
The prescaler divides a machine clock and provides a counter clock to the 16-bit up counter. Dividing ratio of
the machine clock is specified by timer counter control status register (TCCS) among four values.
Timer counter data register (TCDT)
The timer counter data register is a 16-bit up counter. A current counter value of the 16-bit free-run timer is read.
Writing a value during halt of the counter allows setting an arbitrary counter value.
IVF
IVFE
CLK2 CLK1 CLK0
STOP
CLR
CLK
STOP
CLR
2
OF
Re-
served
16-bit free-run timer
Timer counter data register
(TCDT)
Output counter value
to input capture
Prescaler
Timer counter
control status register
(TCCS)
Free-run timer
interrupt request
φ
: Machine clock
OF : Overflow
I
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