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>> No.1147960 [View]
File: 113 KB, 1440x900, MCP23018 weak ACK.png [View same] [iqdb] [saucenao] [google]
1147960

Does anyone have any experience with the MCP23018? Why is the ACK bit so damn weak? I can't find anything in the datasheet about this.

It's <1/10th of Vcc. With a 1k pull-up it's about 300mV and with a 4.7k it peaks at 350mV.

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