【文件名】:11913@52RD_晶体设计 FOR ST.pdf
【格 式】:pdf
【大 小】:220K
【简 介】:1.晶振电路的原理,
2.晶振参数:等效串联电阻,DL,CL,CS, RF电阻,等参数的意义,
3.PCB LAYOUT的说明等.
教会你如何选择符合电路要求的晶振,如何计算外部负载电容和外部限 流电阻的参数。
【目 录】:
Contents
1 Quartz crystal properties and model
2 Oscillator theory
3 Pierce oscillator
4 Pierce oscillator design
4.1 Feedback resistor RF
4.2 Load capacitor CL
4.3 Gain margin of the oscillator
4.4 Drive level DL and external resistor RExt calculation
4.4.1 Calculating drive level DL
4.4.2 Another drive level measurement method
4.4.3 Calculating external resistor RExt
4.5 Startup time
4.6 Crystal pullability
5 Easy guideline for the selection of suitable crystal
and external components
6 Some recommended crystals for STM32™ microcontrollers
6.1 HSE part
6.1.1 Part numbers of recommended 8 MHz crystals
6.1.2 Part numbers of recommended ceramic resonators
6.1.3 Part numbers of recommended 25 MHz crystals
(Ethernet applications)
6.1.4 Part numbers of recommended 14.7456 MHz crystals (audio
applications)
6.2 LSE part
7 Some recommended crystals for STM8A/S microcontrollers
7.1 Part numbers of recommended crystal oscillators
7.2 Part numbers of recommended ceramic resonators
8 Some PCB hints
[此贴子已经被作者于2011-9-14 10:33:44编辑过] |