Shown here is a product lineup, supporting 48-pin to 144-pin, a memory line up of 512kB and 1MB, and where 128kB RAM is common. There are many part numbers due to more GPIO pins. JTAG has many Debug pins, therefore, Renesas has added a part number without JTAG so that Debug pins can be used as GPIO pins. The part number without JTAG can be debugged in FINE. They are also adding a part number with and without sub-clock so that the sub-clock pin can be used as a GPIO pin. CAN FD is separated into different part numbers because of the IP usage fee. CAN 2.0 is license free. If users only use CAN 2.0, they can choose a part number without CAN FD.