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F28335 最小板HALT模式下电流很大



在现有的一个最小板(只有一颗F28335和JTAG电路,外部晶振30M)下,测试例子程序lpm_haltwake,测得在HALT模式下,1.882V电流17mA, 3.308V电流15mA。请问为什么会和手册中差异如此之大呢?