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Low-Cost Gateway Reference Design

Low-Cost Gateway Reference Design. ZigBee to Ethernet Gateway 8-Bit AVR Wireless SoC Embedded TCP/IP MAC-PHY MFG Ready Design. System Highlights. ZigBee to Wired Ethernet Connection Ready for Manufacturing Design. Low-Cost 2-layer PCB layout Atmel Atmega256RFR2 8-bit AVR CPU

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Low-Cost Gateway Reference Design

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  1. Low-Cost GatewayReference Design • ZigBee to Ethernet Gateway • 8-Bit AVR Wireless SoC • Embedded TCP/IP MAC-PHY • MFG Ready Design

  2. System Highlights • ZigBee to Wired Ethernet Connection • Ready for Manufacturing Design. • Low-Cost 2-layer PCB layout • Atmel Atmega256RFR2 8-bit AVR CPU • WIZnet W5200 Hardware Ethernet MAC & PHY • Low-Cost RF PHY with PCB Antenna • Industry standard USB Micro-B Power Inlet • AT24MAC602 MAC ID PROM • Optional Serial Flash Socket

  3. Block Diagram

  4. CPU features and Benefits • Atmel Atmega256RFR2 • Monolithic CPU and IEEE802.15.4 Radio • 8-Bit AVR Architecture • 256k Flash, 8k EEPROM, 32k SRAM • Outstanding RF performance • Good fit for Gateway-Coordinator roll • Enough CPU for Coordinator, Data Concentrator and Ethernet Queuing tasks • Lower cost than 32-bit solutions with Embedded OS • Free ZigBee, IEEE802.15.4 and LW-Mesh stacks available

  5. Ethernet MAC Features and Benefits • WIZnet W5200 Ethernet Controller • Hardwired TCP/IP controller • 10/100 Ethernet MAC & PHY • TCP, UDP, ICMP, IPV4 and Ethernet Protocols • Excellent cost to performance balance for Gateway roll www.wiznettechnology.com

  6. RF Features and Benefits • ATmega256RFR2 System on a Chip +3.5 dB Transmit Power -100 Receiver Sensitivity. • Large PCB Antenna Half-wave dipole design Simple and efficient radiator Large effective area for excellent receiver gain Direct connection to SoC, minimal loss in Tx path +6 db Link-budget improvement over chip antennas 2x range improvement over chip antennas • No Balun cost • No Chip Antenna cost • No LNA/PA or FEM cost • No Coax Connector cost

  7. Other Features • Atmel AT24MAC602 TWI EEPROM Designed for storage of EUI-48 Addresses Perfect for Ethernet and ZigBee address Also persistent storage • Optional Flash socket for field upgrade, web page, electronic datasheets (TEDS) or scratch pad. • USB Micro-B power inlet. Can use industry standard cell-phone chargers, wall-warts or Access-Point USB jacks. • Spare Button and LED for binding stimulus and indication • Power Good LED • Reset* button • UART Connection for Mass-Production Testing • Low-Cost RJ-45 MAG-Jack • Altium Source files available • MFG files available: Schematics, Gerbers, BOMs, RF Performance Test • Overall Size 4 1/2 x 2 1/8 inches (110 x 55mm)

  8. Low-Cost Gateway in ZigBee to Android Demo

  9. Budgetary Pricing • Estimated BOM costs using Digikey retail web pricing for small volumes • Fully Populated $20.01/1k • Minimal Population $16.96/1k • Both Atmel and Wiznet are committed to aggressive pricing at high volume. • Call for a quote.

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