I've had two MCP23017 digital i/o chips running well at 400kHz. But running at 1MHz is unsuccessful. I've tried tweaking the bus pull up resistors.
Has anyone run I2C at 1MHz? Or Faster? I'd like to know what can be achieved.
NDP2 with f/w 4.2.2.2 using MultiI2C (thanks NooM)
i2c bus speed? Is there a limit beyond 400kHz?
Started by philvr, Nov 18 2013 04:45 PM
2 replies to this topic
#1
Posted 18 November 2013 - 04:45 PM
#3
Posted 19 November 2013 - 11:04 AM
Thanks. I should have read the data sheet...
Another question is just how reliable is the netduino I2C firmware? Has anyone stress tested the i2c implementation? As I am moving toward a commercial product it would be interesting to develop an idea of how robust it is.
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