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MSP430f249的XT1最高频率可以用到多少?可以用11.0592M的晶体振荡器吗?
XT1可以支持11.0592M。当然更通常的做法是接到XT2上
XT1可以工作在高频模式，最高支持16M晶体。请参考
F2xx user's guide
http://www.ti.com/litv/pdf/slau144h
和F249的datasheet
