Winning Combinations to Design Faster

Power meter with RF communication

Wi-SUN communication to enhance power meter functionality

The Wi-SUN Alliance provides sub-GHz communication standards for meter AMR applications, as well as smart home appliance applications, due to its low power consumption and smart network connection.

Our Renesas solution uses a combination of the RL78/G1H MCU with a sub-GHz radio, an RX651 MCU, and RF products such as the F1420 PA and the F2914 switch. The ISL85413 buck converter ensures a stable voltage supply for applications where RF transmission, multiple peer accessing, and networking communication are required.

The 16-bit RL78/G1H acts as an RF transceiver to transmit and receive the data from the antenna. The signal is then amplified by an LNA or a PA. The entire process is fully compliant with the Wi-SUN Alliance-based PAN/FAN profile (IEEE802.15.4g/4e).

Key features:

  • Full solution level support for the Wi-SUN standard
  • Provide hardware package design support
  • High output power and receive performance


residential power meter front panel

Recommended products

Products Description Documents
RL78/G1H Low power SubGHz wireless communication MCU User's manual
RX651 RXv2 core with up to 2MB Flash memory, high integration, general purpose MCU User's manual
Buck Controller    
ISL85413 Wide VIN 300mA synchronous buck regulator Datasheet
RF Switch    
F2914 High reliability SP4T RF switch Datasheet
RF Amplifier    
F1420 RF amplifier 700MHz to 1.1GHz Datasheet


Block diagram

block diagram

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