參數(shù)資料
型號： MC68HC705C9ACP
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： Microcontrollers
中文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝： PLASTIC, DIP-40
文件頁數(shù)： 139/160頁
文件大?。?/td> 2076K
代理商： MC68HC705C9ACP
Electrical Specifications
3.3-Vdc Control Timing
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
139
12.9 3.3-Vdc Control Timing
Figure 12-4. TCAP Timing Relationships
Characteristic
(1)
1.
V
= 3.3Vdc
±
0.3 Vdc, V
= 0 Vdc, T
= –40 to +85
°
C, unless otherwise noted
2.
Because a 2-bit prescaler in the timer must count four internal cycles (t
CYC
), this is the limiting minimum factor
in determining the timer resolution.
3.
The minimum period t
should not be less than the number of cycle times it takes to execute the capture
interrupt service routine plus 24 t
.
4.
The minimum t
ILIL
should not be less than the number of cycle times it takes to execute the interrupt service
routine plus 19 t
CYC
.
Symbol
Min
Max
Unit
Frequency of operation
Crystal
External clock
f
OSC
—
DC
2.0
2.0
MHz
Internal operating frequency (f
OSC
÷
2)
Crystal
External clock
f
OP
—
DC
1.0
1.0
MHz
Cycle time
t
CYC
1000
—
ns
Crystal oscillator startup time
t
OXOV
—
100
ms
Stop recovery startup time (crystal oscillator)
t
ILCH
—
100
ms
RESET pulse width
t
RL
1.5
—
t
CYC
Timer
Resolution
(2)
Input capture pulse width
Input capture pulse period
t
RESL
t
TH
, t
TL
t
TLTL
4.0
125
(3)
—
—
—
t
CYC
ns
t
CYC
Interrupt pulse width low (edge-triggered)
t
ILIH
250
—
ns
Interrupt pulse period
t
ILIL
(4)
—
t
CYC
OSC1 pulse width
t
OH
,t
OL
200
—
ns
t
TLTL
*
TCAP PIN
t
TH
*
t
TL
*
* Refer to timer resolution data in
12.8 5.0-Vdc Control Timing
and
12.9 3.3-Vdc Control Timing
.
F
Freescale Semiconductor, Inc.
n
.
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相關代理商/技術參數(shù)
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