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bq40z80 Device not in ROM mode.

Other Parts Discussed in Thread: BQ40Z80, BQSTUDIO, BQ40Z50-R1

各位好!

最近公司在做一个6串带电量计的保护板项目,电量计使用的是bq40z80。配置好参数并将srec文件烧进bq40z80,并使用了一段时间,一切还正常,在此期间没有进行shutdowm操作,也很少去断开电量计的电源。但随着项目的深入,需要发送shutdowm命令给bq40z80,或者需要对bq40z80进行断电/上电操作,发现这两种操作都会造成bq40z80数据错乱,经常连不上电量计,且无法再次烧录srec文件,就算将P+和B+端短接后上电也无法烧录srec文件,总是提示Device not in Rom mode。这种现象已经出现了好多次了,现在已经废掉十几片IC了,现在搞得很头大。

请问大家有没有碰到过这样的问题?谢谢!