I2C function... clock pin?

[Qacer]

Thanks again, Dave!

In regards to pull-up resistors, I was reading Microchip's Getting Started: I2C Master Mode. They have a slide that shows suggested Pull-up values. They have 4.7k (less than 4.7 kbps), 2.2k (100 kbps), and 1k (400 kbps). What data rate have you achieved using 4.7k?

I'm just curious to see if Microchip's values seem pretty reasonable.

Thanks!

[Dave]

Qacer, The resistor values you have mentioned are correct. The equipment I design is battery powered and I have not had any problem communicating with 24lc515 eeprom's @ 400 Khz with 4.7K resistors for the pullup. I however would not use anything bigger than that. Also I use the I2C bus on the PCB only but with smaller resistors you could use this bus for somewhat longer runs. If you can afford the current draw, it is best to use approx. 2.2K Ohms.

Dave Purola,
N8NTA

[Qacer]

Thanks again, Dave!