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时钟 [2017/03/26 18:51] gongyu 创建 |
时钟 [2017/03/26 18:53] gongyu |
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The main parameter of a crystal/oscillator is the resonance frequency. The Quartz is cut at the factory, so if you want a different frequency, you have to use a different part. It is useful to have a few different parts available during FPGA prototyping. | The main parameter of a crystal/oscillator is the resonance frequency. The Quartz is cut at the factory, so if you want a different frequency, you have to use a different part. It is useful to have a few different parts available during FPGA prototyping. | ||
- | 工作原理: | + | 它们都长什么样? |
+ | {{ :crystals_oscillators.jpg |}} | ||
晶体(2个管脚): | 晶体(2个管脚): |