Can I connect inputs on AD667 directly to digital outputs on Atmel SAM3X8E ARM Cortex-M3 CPU?

I'd like to connect the 12 ea. digital input lines on one of your DAC AD667 chips directly to the digital output lines on an Atmel SAM3X8E ARM Cortex-M3 CPU. Will that work, or do I need to use some type of level-shifting to accommodate Atmel's 3.3V logic? Thank you. #JMLQ1