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參數(shù)資料
| 型號： | MB90495G |
| 廠商： | Fujitsu Limited |
| 英文描述： | 16-bit Proprietary Microcontroller CMOS |
| 中文描述： | 16位微控制器專有的CMOS |
| 文件頁數(shù)： | 36/92頁 |
| 文件大?。?/td> | 450K |
| 代理商： | MB90495G |
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MB90495G Series
36
2.
Time-base Timer
The time-base timer is an 18-bit free-run counter (time-base counter) for counting up in synchronization with the
main clock (1/2 main oscillation clock) .
Four interval times are available, and interrupt requests can be generated for each interval time.
The time-base timer also has a function for supplying timers for oscillation stabilize standby time and operating
clocks for peripheral devices.
Interval timer feature
When the time-base timer counter reaches the interval set by the interval time selection bits (TBTC : TBC1,
TBC0) , it generates an overflow (TBTC : TBOF
=
1) and interrupt request.
If the interrupts due to overflow generation are enabled (TBTC : TBIE
=
1) , when an overflow is generated
(TBTC : TBOF
=
1) , an interrupt is generated.
Select from the following 4 time-base timer intervals :
Time-base timer interval times
HCLK : oscillation clock
The number in parentheses ( ) for 4-MHz oscillation clock operation
Time-base Timer Block Diagram
See below for the actual interrupt request number of the time-base timer :
Interrupt request number : #16 (10
H
)
Count Clock
Interval Time
2/HCLK (0.5
μ
s)
2
12
/HCLK (approx. 1.0 ms)
2
14
/HCLK (approx. 4.1 ms)
2
16
/HCLK (approx. 16.4 ms)
2
19
/HCLK (approx. 131.1 ms)
TBIE
TBOF TBR
TBC1 TBC0
×
2
1
2
1/
HCLK
×
2
2
×
2
3
×
2
8
×
2
9
×
2
10
×
2
11
×
2
12
×
2
13
×
2
14
×
2
15
×
2
16
×
2
17
×
2
18
OF
OF
OF
OF
To PPG timer
Time-base timer counter
To watchdog timer
To clock controller
oscillation stabilize
standby time selector
Interval
Timer selector
Set TBOF
Clear TBOF
Clear counter
circuit
Power-on Reset
Stop Mode
CKSCR
:
MCS
=
1
→
0*
1
CKSCR
:
SCS
=
0
→
1*
2
Time-base timer control register
(TBTC)
Time-base timer interrupt signal
Re-
served
OF
HCLK : oscillation clock
*1
: Switch machine clock from main clock to PLL clock
*2
: Switch machine clock from subclock to main clock
: overflow
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MB90495G_09 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
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| MB90497GPF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller |
| MB90497GPFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS |
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