ZigBee single-chip solution has Cortex-M3

The CC2538  system-on-chip targets ZigBee wireless connectivity and features a Cortex-M3 MCU, memory, and hardware acceleration. The 8- × 8-mm QFN56 packaged chip has a 2.4-GHz IEEE 802.15.4 transceiver, 128 to 512 Kbyes of flash, and up to 32-kbytes of RAM.

The IC supports ZigBee PRO, ZigBee Smart Energy and ZigBee Home Automation and lighting standards, along with and 6LoWPAN IPv6 networks, and features a receiver sensitivity of -97 dBm. The chip has an AES-128/256, SHA2 hardware encryption engine, with optional ECC-128/256, and RSA hardware acceleration for secure key exchange. It operates at up to 125ºC, takes only 1.3 μA in standby, and costs under $3.00 in high volumes.