參數(shù)資料
型號： S12IICV2
廠商： Motorola, Inc.
英文描述： MC9S12DT128 Device User Guide V02.09
中文描述： MC9S12DT128設(shè)備的用戶手冊V02.09
文件頁數(shù)： 119/138頁
文件大?。?/td> 2083K
代理商： S12IICV2
MC9S12DT128 Device User Guide — V02.09
119
A.5.3 Phase Locked Loop
The oscillator provides the reference clock for the PLL. The PLL′s Voltage Controlled Oscillator (VCO)
is also the system clock source in self clock mode.
A.5.3.1 XFC Component Selection
This section describes the selection of the XFC components to achieve a good filter characteristics.
Figure A-2 Basic PLL functional diagram
The following procedure can be used to calculate the resistance and capacitance values using typical
values for K
1
, f
1
and i
ch
from
Table A-16
.
The grey boxes show the calculation for f
VCO
= 50MHz and f
ref
= 1MHz. E.g., these frequencies are used
for f
OSC
= 4MHz and a 25MHz bus clock.
The VCO Gain at the desired VCO frequency is approximated by:
f
f
–
(
)
K
1
1V
=
100
–
=
The phase detector relationship is given by:
i
ch
is the current in tracking mode.
f
osc
1
refdv+1
f
ref
Phase
Detector
VCO
K
V
1
synr+1
f
vco
Loop Divider
K
Φ
1
2
f
cmp
C
s
R
C
p
VDDPLL
XFC Pin
K
V
K
1
e
-----------------------
e
60
–
50
–
(
-----------------------
)
100
= -90.48MHz/V
K
Φ
i
ch
–
K
V
=
=
316.7Hz/
相關(guān)PDF資料
PDF描述
S12IICV2D MC9S12DT128 Device User Guide V02.09
S12OSCV2 CABLE, 9305, 4PAIR, PER M; Cores, No. of:8; Conductor make-up:1/22AWG; Area, conductor CSA:0.325mm2; Diameter, External:6.73mm; Material, secondary insulation:PVC; Colour, secondary insulation:Chrome; Alpha type number:5905C RoHS Compliant: Yes
S12OSCV2D Multiple Conductor Wire; Number of Conductors:2; Conductor Size AWG:22; No. Strands x Strand Size:Solid; Approval Categories:UL NEC/CUL,CEC; Leaded Process Compatible:Yes RoHS Compliant: Yes
S12INTV1 MC9S12DT128 Device User Guide V02.09
S12INTV1D MC9S12DT128 Device User Guide V02.09
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S12IICV2/D 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Device User Guide V01.18
S12IICV2D 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC9S12DT128B
S12INTV1 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MC9S12DT128 Device User Guide V02.09
S12INTV1D 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MC9S12DT128 Device User Guide V02.09
S12J 功能描述:整流器 600V 12A Std. Recovery RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
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