參數(shù)資料
型號: MC68HC08KH12A
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 170/178頁
文件大?。?/td> 925K
代理商: MC68HC08KH12A
Electrical Specifications
MC68HC08KH12A Data Sheet, Rev. 1.1
170
Freescale Semiconductor
17.6 Control Timing
17.7 Oscillator Characteristics
17.8 TImer Interface Module Characteristics
Characteristic
Symbol
Min
Max
Unit
Internal Operating Frequency
(2)
f
OP
6
MHz
RST Input Pulse Width Low
(3)
t
IRL
50
ns
NOTES:
1. V
DD
= 4.0 to 5.5 Vdc, V
SS
= 0 Vdc; timing shown with respect to 20% V
DD
and 70% V
DD
, unless otherwise noted.
2. Some modules may require a minimum frequency greater than dc for proper operation; see appropriate table for this
information.
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
Characteristic
Symbol
Min
Typ
Max
Unit
Crystal Frequency
(1)
f
CGMXCLK
6
MHz
External Clock
Reference Frequency
(1), (2)
f
CGMXCLK
dc
24
MHz
Crystal Load Capacitance
(3)
C
L
Crystal Fixed Capacitance
(3)
C
1
2
×
C
L
Crystal Tuning Capacitance
(3)
C
2
2
×
C
L
Feedback Bias Resistor
R
B
10
M
Series Resistor
(3), (4)
R
S
NOTES:
1. The USB module is designed to function at f
CGMXCLK
= 6MHz and CGMVCLK = 48MHz. The values given here are
oscillator specifications.
2. No more than 10% duty cycle deviation from 50%
3. Consult crystal vendor data sheet
4. Not Required for high frequency crystals
Characteristic
Symbol
Min
Max
Unit
Input Capture Pulse Width
t
TIH,
t
TIL
125
ns
Input Clock Pulse Width
t
TCH,
t
TCL
(1/f
OP
) + 5
ns
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