The AM263x Sitara™ Arm® microcontrollers are built to meet the complex real-time processing needs of next-generation industrial and automotive embedded products. The AM263x MCU family consists of multiple pin-to-pin compatible devices with up to four 400-MHz Arm Cortex®-R5F cores. The family is designed for advanced motor control and digital power control applications with advanced analog modules. This document details the differences between these family of devices based on their part number and compared against the superset device AM2634.