The M37920S4CGP is a single-chip microcomputers designed with high-performance CMOS silicon gate technology. These are housed in 100-pin plastic molded QFP. This microcomputer supports the 7900 Series instruction set, which are enhanced and expanded instruction set and are upper-compatible with the 7700/7751 Series instruction set. The CPU of this microcomputer is a 16-bit parallel processor that can also be switched to perform 8-bit parallel processing. Also, the bus interface unit of this microcomputer enhance the memory access efficiency to execute instructions fast. This microcomputer include the 4-channel DMA controller and the DRAM controller with enhanced fast page mode. Therefore, this microcomputer are suitable for office, business, and industrial equipment controller that require fast processing of large data.