SuperH is an enclosed RISC refined for high cost-performance, pint-sized, and performance per unit of power usage (MIPS/W) use as a CPU core. The product lines contain a series with the SH-2 as the CPU core and on-chip large-capacity flash memory and minor use such as timer, serial I/O, and A/D converter, and a series with the SH-3 or SH-4 as the CPU core, which attains high-speed data processing and is assembled with cache and MMU. Furthermore, there is SH2-DSP or SH3-DSP as the CPU core, which will have adequate DSP roles and a priority on multimedia and communications processing.