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Wireless microcontrollers support ZigBee Jan 11, 2007 11:15 AM
The JN513x microcontrollers from Jennic provide performance, price and power improvements over the current JN5121 family. The memory available has been increased to 192 kB of ROM and 96 kB of RAM, allowing full exploitation of the on-chip 32-bit RISC processor for complex applications and algorithms coupled with ZigBee or other mesh protocol stacks. Variants are available for simpler, low-cost applications. The on-chip ROM includes the IEEE802.15.4 version B media-access protocol layer provision for a range of external serial EEPROM devices, over-the-air download, hardware abstraction layers and a simple serial interface. Embedding these features in ROM frees up memory space for applications and allows simple dongle products at low cost. IEEE802.15.4B and ZigBee variants of the JN513x family are available. The JN513x family realizes a number of improvements: extended range is achieved with a modem architecture that provides 97 dB receive sensitivity and is more robust in noisier environments with greater tolerance to carrier offset and EVM. Transmit power is also improved to +3 dBm. The JN513x family has a 100 dB link budget. Deep sleep current consumption is 400 nA. With on-chip oscillator and protocol timers running, sleep current consumption is under 2 μA. A family of modules provide ceramic antenna, SMA and UFL connector options. Standard power and high power modules are also available offering link budgets of 100 dB and 119 dB, respectively. The standard module has demonstrated operation over 1 km and the high-power module over 4 km in open-space environments. Modules meet FCC, ETSI and TELEC regulations, reducing the effort needed to integrate Jennic devices into end products. JN513x products are now available for general sampling in a 56-pin QFN package. The JN513x family includes the JN5139 wireless microcontroller with 192 kB of ROM, 96 kB of RAM at $3.50 in 100,000-piece quantities down to the JN5131 with 192 kB of ROM, 8 kB of RAM at $2.95 in 100,000-piece quantities.
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