The RL78/G1H microcontroller supports IEEE 802.15.4e/g and has industry’s lowest power consumption - min. 5.8 mA (3.3 V) at stand-by mode in RF receipt. The balun circuit and filter circuit make the antenna circuit design easy. And it can be reduced external parts for cost reduction. It can be reduced CPU load and can be made easy development by built-in hardware functions for IEEE 802.15.4e/g compliant especially Wi-SUN. We also offer transceiver RAA604S00 conforming to IEEE 802.15.4e/g that can be used in combination with a microcontroller. (The document is here.).