Chipcon's CC2430 combines a 32-MHz 8051 microcontroller with an 802.15.4 transceiver. The combination can handle Chipcon's ZigBee stack. The chip is available in 32-, 64-, and 128-kbyte flash memory sizes. All of the devices have 8 kbytes of RAM. Current consumption is 27 mA in receive mode and 25 mA in transmit mode. There are two on-chip serial ports, hardware encryption support, an AES coprocessor, a battery monitor, and a temperature sensor. The CC2430's pricing starts at $3.30. It's available in a 7- by 7-mm, 48-pin QLP48 package. www.chipcon.com