| No. | Function | I/O | Act | Description | |
74 | VOLH | I | ANA | Output level detection input pin. 电平输出水平检测输入脚 | |
88 | ~POFF | I | L | Power failure detection input pin. 电源故障检测输入脚 | |
100 | PROTECT | I | H | over current and over voltage detection input pin. 过电流和过电压检测输入脚 | |
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