參數(shù)資料
型號(hào)： C166
廠商： SIEMENS AG
元件分類： 8位微控制器
英文描述： 8-Bit Microcontroller(8位微控制器)
中文描述： 8位微控制器（8位微控制器）
文件頁(yè)數(shù)： 24/45頁(yè)
文件大?。?/td> 654K
代理商： C166
24 of 45
AP242005 07.99
Crystal Oscillators of the
C500 / C166 Microcontroller Family
8
Used Short Cuts
C
0
: Shunt capacitance of the quartz crystal (static capacitance).
C
0typ
: Typical value of the shunt capacitance of the quartz crystal.
C
1
: Motional capacitance of the quartz crystal (dynamic capacitance).
Mechanical equivalent is the elasticity of the quartz crystal hardware blank.
C
1typ
: Typical value of the motional capacitance of the quartz crystal.
C
L
: Load capacitance of the system resp. quartz crystal.
C
S
: Stray capacitance of the system.
C
X1
, C
X2
: Load capacitors
C
X
: Capacitance to suppress bias voltage at XTAL2 output.
C
X2rest
: Capacitance of C
X2
in combination with L
X
in 3rd overtone mode.
C
B
: Decoupling capacitance for V
DD
and V
SS
on the Printed Circuit Board (PCB).
Depending on the EMC behavior the value should be in the range: 22nF to 100nF.
f
LXCX2
: Parallel resonance frequency of L
X
and C
X2
f
3rd
: Frequency of the 3rd overtone
f
fund
: Frequency of the fundamental mode
I
pp
: Peak to peak value of the quartz crystal current.
I
Q
: Drive current
L
1
: Motional inductance of the quartz crystal (dynamic inductance).
Mechanical equivalent is the oscillating mass of the quartz crystal hardware blank.
L
X
: Inductance for 3rd overtone mode.
L
Q
:
Effective reactance
P
W
: Drive level
Q
: Quartz Crystal
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