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TCA9535: ACK电平问题

Part Number: TCA9535

器件进行I2C通讯时,ACK信号无法拉到3.3V,且ACK的时间明显短,波形如下,这样会影响到I2C通讯吗?

  • 您好,

          请问I2C master是用的IO口模拟的,还是I2C控制器?

          由于应答信号(ACK低电平 NACK高电平)在第9个时钟,Master是否释放了SDA总线,等待ACK信号到来?