在msp430f4250中,SD16有一个内部基准电压,打开SD16REFON和VMID buffer时,应该是内部1.2V基准电压输出,可这时芯片开始发热,Vref引脚没有接任何负载。如果VMID buffer关闭时,就不发热。怎么内部基准电压不能输出?
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在msp430f4250中,SD16有一个内部基准电压,打开SD16REFON和VMID buffer时,应该是内部1.2V基准电压输出,可这时芯片开始发热,Vref引脚没有接任何负载。如果VMID buffer关闭时,就不发热。怎么内部基准电压不能输出?