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Original question:

BQ40Z50: BQ40Z50的SMBC,SMBD IO电压是多少，还需要外部的上拉吗

BQ40Z50: 读取数据ACK问题

ye shixiang
Prodigy 20 points
Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO

使用软件模拟iic，发现有个问题，读取数据时，当发送读地址时，其ACK有问题，一定要等到SCL拉高后，之后SDA才会拉低。 对比发送写地址则没有这个现象。