I2C fast to slow at runtime

[kenif]

No. But as far as I know all 400K devices work on 100K.

Yes, it works fine. At the moment we have a 900 us read (Honeywell pressure sensor), but at 400k it's about 225 us, and saving the extra time would be useful.

[Dave]

If you need the speed, then what devices are running at 100K?

[richard]

or use the mssp module if your chip has one
http://support.melabs.com/forum/picb...c-hardware-i2c

[kenif]

or use the mssp module if your chip has one
http://support.melabs.com/forum/picb...c-hardware-i2c

Thanks, I'll look into that.

[kenif]

If you need the speed, then what devices are running at 100K?

Microchip TC74.
We used this for the TO-220 packaging - it is screwed to a motor where it is difficult to put a PCB.