Renesas R8C/20和R8C/21系列采用了高性能硅栅CMOS工艺

The R8C/20 and R8C/21 Groups are built using the high-performance silicon gate CMOS process using the R8C CPU core and arepackaged in a 48-pin plastic molded LQFP. The MCUs operate using sophisticated instructions featuring a high level of instruction efficiency. With 1 Mbyte of address space, it is capable of executing instructions at high speed. This Furthermore, the data flash (1 KB x 2 blocks) is embedded in the R8C/21 Group.

The difference between R8C/20 and R8C/21 Groups is only the existence of the data flash. Their peripheral functions are the same.