ATSTK521, STK521 Hardware Expansion Module with STK500 development board is designed to support the AT90PWM81, AT90PWM161 MCUs products and future compatible derivatives. The STK521 includes connectors and hardware allowing full utilization of the new features of the AT90PWM81/161, while the Zero Insertion force (ZIF) socket allows easy to use of SOIC20 package for prototyping
