short delays

I’m using uC/OSII, is there a way to give up the processor for periods less than 1 tick?

I have an LCD routine that waits for a period between setting the R/S,data and E, right now I use a delay_us but seems a waste to just sit there and not do much else, is there a way to give up control even for such a short time. With a lot of updates to the screen it all adds up.