NXP recommends the FRDM – K22F development platform as an alternative to this board. The TWR-K20D50M module is a development board for the Kinetis® K10 and K20 50 MHz 32-bit Arm® Cortex®-M4 MCUs and provides rapid prototyping for applications requiring high feature integration and low power consumption. The TWR-K20D50M operates as a standalone debug tool and can also be combined and used as part of the modular Tower® System development platform.