IEEE802.15.4 certified wireless microcontroller targets the Smart Grid market
March 23, 2012 // Julien Happich
STMicroelectronics' STM32W microcontroller is among the first IEEE802.15.4 certified platforms that will support the new ZigBee Smart Energy Profile version 2.0 (SEP 2.0), which defines smart grid scenarios for a “greener” world.
The use of the latest Internet Protocol (IPv6)-based Stack (ZigBeeIP) extends interoperability between different manufacturers and their physical-layer implementations. Among many other SEP 2.0 advances, the STM32W includes support for pre-pay services, load response, and energy-demand management; the microcontroller and its features enable energy conscious homes and buildings. Smart grid products, comprising interconnected equipment such as appliances, energy meters and infrastructure monitors featuring microcontrollers like the STM32W, are conceived to reduce peak loads, improve network stability, encourage lower consumption and better manage a wider variety of renewable energy sources such as wind and solar. ST's STM32W enables development of SEP 2.0-compliant smart grid applications with its increased memory capacity of up to 256Kbytes and high code density, made possible by the ARM Cortex-M3 processor core. In addition to the certified IEEE 802.15.4 radio implemented on-chip, other functions such as two 16-bit timers, an encryption accelerator and 12-bit ADC are also valuable for designers creating cost-effective autonomous wireless sensors and control solutions. All variants will be available in a 48-pin QFN48 package, with a 40-pin QFN40 option also offered for lower-density versions.
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