One way to achieve higher integration using the RA2L1 MCUs is to take advantage of the Renesas capacitive touch sensing unit. As illustrated on the left, if a solution is software-based, CPU resources must be distributed to multiple capacitive touch sensing tasks, which requires a huge amount of time. The Renesas solution in the middle shows the RA2L1 MCUs combining a specialized hardware-based cap touch function called CTSU2 in a single chip, which can realize full scanning and processing with less than 15% CPU utilization. This also means the RA2L1 touch sensing system can minimize the overall system power. In addition, CTSU2 noise tolerance meets the requirements of IEC 61000 4-3 level 4 and 4-6 level 3, which are the highest noise immunity levels supported to-date and ensure reliable operations. With the CTSU2, the RA2L1 MCUs can realize enhanced use cases such as touch sensing with a 10 mm thick acrylic layer or proximity sensing at a 100 mm distance.