低功耗模式示例展示了如何将 HCS 高侧开关设置为低功耗模式，然后在发生故障事件时唤醒。要使用此示例，在将代码下载到微控制器之前，在通道 1 上设置一个负载，该负载消耗的电流低于 800mA（我们使用 HCS_gotoSleep 将 LPM 退出电流设置为此值）。下载代码示例之后，将负载电流增加到大于 800mA。这可能导致 LPM 退出，触发 FAULT 引脚，并使微控制器中断或处理此事件。相关的应用程序代码如下所示：

    while(1)
    {
        /* Putting the device into LPM. 800mA exit current on CH1 */
        HCS_gotoLPM(man_lpm_exit_curr_ch1_en_800mA_mask,
                    man_lpm_exit_curr_ch2_en_800mA_mask,
                    0);

        /* Wait for the fault line to trigger low on PB3 */
        __WFI();

        /* If waking up from the interrupt, then check to make sure a signal was
            for an LPM wakeup. The idea here is that the user increases the
            load current somehow to "force the device" from LPM. */
        resCode = HCS_readRegister(TPS2HCSXX_FLT_STAT_CH1_REG,
                                    &currentValue);
        resCode.byte |=  HCS_readRegister(TPS2HCSXX_FLT_STAT_CH1_REG,
                                    &currentValue).byte;

        if(currentValue & TPS2HCSXX_FLT_STAT_CH1_LPM_WAKE_CH1_MASK)
        {
            /* Set a breakpoint here for demonstration */
            asm ("nop");
        }
    }