http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3376 Has any one used the above or similar product? It's an i2c i/o expander. Interested to see if it's any use.
yes with mid range PICs only thou, its a narly chip, quite cunning how you set the ID on the thing for the I2C bus. It does exactly what it says on the tin, but its not that fast thou. Its good because i used it for long range, well not that long, but longish range extension of some LEDs, i had it controlling 6 iirc with 16 brightness levels (done with resistor ladder). any questions?
Thanks Thanks for reply. Just thought i'd get someones opinion as they could be quite useful for expansion of existing projects. How slow are they?
much slower than just using some latches, which are cheap + redilly available. but the advantage is it only needs two pins, and I2C is easy to implement.
