These microcontrollers incorporate an IT900/IT700 power line modem developed by YITRAN and are optimized for power line communication. The frequency band used for power line communication is 100 to 400 kHz, and a maximum communication rate of 500 Kbps is possible (when set to Japan or North America mode). When using the PLL frequency synthesizer, the maximum operating frequency is 30.72 MHz. 100-pin packages are available.