Regarding drivers and middleware, Renesas developed the so called “Firmware Integration Technology” FIT for all RX devices. This enables a faster time-to-market by using configurable software modules. It is a completely new concept that emphasizes the simplification of embedding peripheral function module drivers. It also improves the portability between RX microcontrollers with the goal of lightening the burden of program development and software resource management in software development using the RX family.