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请问,MSP430FR57xx_adc10_02 和 MSP430FR57xx_adc10_06中均选择了internal reference voltage 1.5V, 在设置相关寄存器时,两个文件分别有以下语句:
__delay_cycles(400); // Delay for Ref to settle --> MSP430FR57xx_adc10_02
__delay_cycles(75); // Delay (~75us) for Ref to settle --> MSP430FR57xx_adc10_06
可是我查了datasheet,上面讲到一个Tsettle = 30 us.请问以上两句代码为什么不同?这个延迟时间改如何确定?