With the MC1321x series of devices, NXP has combined the second generation transceivers and the HCS08GT microcontroller into a single package, thereby reducing system component count for node implementation. The system in a package, or SiP, solutions are software compatible with the first and second generation of transceivers. The series can support point-to-point, star, cluster-tree, and mesh networks. Devices are offered in 16Kb, 32Kb, and 60Kb memory configurations. Multiple low power transceiver modes are offered: Off, Hibernate (1µA), Doze (3µA), and Idle (40µA). Also, they are coupled with multiple low power microcontroller modes. These features help manage power and maximize battery life.The transceivers provide up to -92dBm sensitivity with a power output of -27dBm to +4dBm with access to up to 39 GPIO pins. The combination of peripherals includes an 8-channel, 10-bit analog to digital converter, 9 timers, 2 SCI, I²C, low voltage interrupt, internal clock generation and computer operating properly or watchdog timer. The operating voltage ranges from 2.0V to 3.4V. Operating temperature range is from -40 to +80˚C. The 9 x 9 x 1mm 32-pin QFN package is also optimized for space conscious applications, particularly with the MCU and transceiver in a single package. Inventory count and costs can be decreased with the system in a package solution.