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Smart Grid Solutions: Smart Grid Distribution/Smart Meters Slide 17

The STM32W is a derivative of the well-known STM32 family, a 32-bit MCU platform to eliminate obstacles to broad 32-bit usage. It extends the family by adding an IEEE 802.15.4 compliant radio, featuring a 107 dBm total link budget. Targeting low-power domains, some specific peripherals, as well as low-leakage RAM have been integrated in this system-on-chip, including an AES-128 encryption hardware accelerator that brings the required system security for the best-known wireless sensor network protocols. As previously stated, it is necessary to transfer the data that is received, beginning with receiving the data from a house with a lower power 802.15.4 RF system-on-chip, the STM32W108. The core of this chip is the Cortex M3. There is a CPU and a Cortex-M3 core MCU, plus a radio which offers two-point synthesizer modulation for transmission and runs on the 802.15.4 standard 2.4 GHz radio. In addition to this, the user can build several networking architectures compliant with ZigBee PRO, ZigBee IP, RF4CE, 6lowPan, and standard 15.4 MAC libraries. They can also embed an AES128 encryption key for security, and interface through SPI, UART, and I2C with twenty four GPIOs available to run their application if needed. Memory size is offered from 54 K to 256 K. The product is offered in two packages: QFN48 and QFN40 for small footprints.

PTM Published on: 2013-08-23