參數(shù)資料
型號： MAC7122MPV50
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 50 MHz, MICROCONTROLLER, PQFP112
封裝： LQFP-112
文件頁數(shù)： 8/60頁
文件大小： 760K
代理商： MAC7122MPV50
MAC7100 Microcontroller Family Hardware Specifications, Rev. 1.1.1
Preliminary
Electrical Characteristics
Freescale Semiconductor
16
Figure 3. Basic PLL Functional Diagram
The procedure described below can be used to calculate the resistance and capacitance values using typical
values for K1, f1 and ich from Table 20. First, the VCO Gain at the desired VCO output frequency is
approximated by:
Eqn. 8
The phase detector relationship is given by:
Eqn. 9
ich is the current in tracking mode. The loop bandwidth fC should be chosen to fulfill the Gardner’s stability
criteria by at least a factor of 10, a typical value for the stability factor is 50.
ζ = 0.9 ensures a good transient
response.
Eqn. 10
And finally the frequency relationship is defined as:
Eqn. 11
With the above inputs the resistance can be calculated as:
Eqn. 12
The capacitance CS can now be calculated as:
Eqn. 13
The capacitance CP should be chosen in the range of:
Eqn. 14
The stabilization delays shown in Table 20 are dependant on PLL operational settings and external
component selection (for example, the crystal and XFC filter).
Phase
Detector
1
REFDV+1
K
φ
fREF
VDDPLL
R
CP
CS
KV
Loop Divider
1
SYNR+1
fVCO
fOSC
1
2
fCMP
VCO
K
V
K
1
e
f1 fVCO
–
()
K
1
1V
--------------------------
=
KΦ
i
ch
–
K
V
=
fC
2
ζ f
REF
πζ
1
ζ
2
+
()
----------------------------------------
1
10
------
fC
fREF
410
--------------
ζ
0.9
=
()
;
<
→
<
n
fVCO
fREF
----------
2
SYNR
1
+
()
==
R
2
π n f
C
KΦ
----------------------------
=
C
S
2
ζ
2
π f
C
R
---------------------
0.516
fC R
-------------
ζ
0.9
=
()
;
≈
=
C
S
20
÷
C
P
C
S
10
÷
≤≤
相關PDF資料
PDF描述
M38039FFHWG 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PBGA64
MPC740ARX200TX 32-BIT, 200 MHz, RISC PROCESSOR, CBGA255
MPC740ARX233LX 32-BIT, 233 MHz, RISC PROCESSOR, CBGA255
MPC8248VRPIEX 32-BIT, 300 MHz, RISC PROCESSOR, PBGA516
MPC8248VRTIEX 32-BIT, 400 MHz, RISC PROCESSOR, PBGA516
相關代理商/技術(shù)參數(shù)
參數(shù)描述
MAC7122MVF50 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications
MAC7122MVM50 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications
MAC7122VAF50 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications
MAC7122VAG50 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications
MAC7122VFU50 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*