TI中文支持网BQ30Z55 不带二次保护IC，FUSE通过100k电阻连接到GND，PTC通过10k连接到GND，触发FUSE和PF。
BQ30Z55 does not have a secondary protection IC. FUSE is connected to GND through 100k, and PTC is connected to GND through 10k to trigger FUSE and PF.
1. 4-cell li-po，FUSE通过100k连接gnd'，测量fuse引脚电压为8.7v，发0029也清除不掉错误，请问FUSE引脚在什么情况下会被触发输出高。
1. 4-cell li-po, FUSE is connected to gnd' through 100k, and the voltage of the fuse pin is measured to be 8.7v, and the error cannot be cleared by sending 0029. Under what circumstances will the FUSE pin be triggered and output high.
2. FUSE通过100k连接gnd，之前发送0029无效，0012复位也无效，电芯电压降到4v一下也无效，我怎么操作可以清除了FUSE和PF变为绿色，问题是FUSE有检测功能吗？
2. FUSE is connected to gnd through 100k, the previous sending of 0029 is invalid, 0012 reset is also invalid, the cell voltage drops to 4v, it is also invalid, how can I clear FUSE and PF to green, the question is, does FUSE have a detection function?
Star Xu：
您好，FUSE 如果不用直接接到地试一下。0029无效，0012复位也无效，电芯电压降到4v一下也无效，可能芯片损坏，建议换一个芯片试一下。
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jian kong：
请问我备份从新刷dataflash文件，提示我ROM 错误。这是芯片坏了吗？那购买新的30z55从新刷可以恢复之前数据吗？
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Star Xu：
您好，提示ROM 错误，请确认芯片是否在ROM 模式，如果在ROM 模式不能烧录，可能芯片损坏。
新购买的芯片是可以烧录固件的。
