The Renesas Flexible Software Package (FSP) is an optimized software package designed to provide easy-to-use, scalable, high-quality software for embedded system design. The primary goal is to provide lightweight, efficient drivers that meet common use cases in embedded systems. This manual describes how to use the Renesas Flexible Software Package (FSP) for writing applications for the RA microcontroller series.

This document describes the CMTW FIT Module API for the supported RX class MCUs. Software architecture, system interfaces and usage details are provided here to facilitate integration of the CMTW FIT module into a user's application. The RX Family MCUs supported by this module have two CMTW units. Throughout this document these units are referred as channels. Each channel has one compare match (CM), two output compares (OC0 and OC1), and two input captures (IC0 and IC1). Compare match is a general purpose timer that can be used to generate timer ticks. Output compare and input capture are timers but also have MCU pins associated with them. They are used to generate waveforms based on the timer settings or detect external events and capture the time of the event. The CMTW timers are 32-bit wide allowing from hundreds of nanoseconds to hours of time events to be specified.

Integrating Renesas DA14695, DA14592, and related variants into cybersecurity-focused products is guided by the foundational standards EN 18031-1:2024 and EN 18031-2:2024, which establish key principles for security assessment and serve as essential baselines while emphasizing that ensuring compliance and maintaining robust product security remains the manufacturer’s responsibility.