The document is a datasheet for the R8C/35D Group of single-chip MCUs by Renesas.
It provides an overview of the features and specifications of the MCUs, including the CPU core, memory, power supply, I/O ports, clock generation circuits, interrupts, timers, serial interface, A/D converter, comparator, flash memory, operating frequency, current consumption, operating temperature, package type, and product list.
It also includes a block diagram and pin assignment information.
The MCUs are designed for use in electronic household appliances, office equipment, audio equipment, and consumer equipment.