The SH7253 brings the user the ability to set up high-performance systems with strong functionality at less expense than was achievable. On-chip peripheral functions essential to system configuration on this LSI include a floating point unit (FPU), large-capacity ROM and RAM, a direct memory access controller (DMAC), timers, an automotive direct memory access controller (A-DMAC), a Renesas serial peripheral interface (RSPI), an user break controller (UBC), an advanced timer unit III (ATU-III), a serial communications interface (SCI), a controller area network interface (RCAN-TL1), an A/D converter (ADC), an interrupt controller (INTC), and I/O ports.