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Jennic unveils new wireless MCU

Posted: 08 Sep 2005     Print Version  Bookmark and Share

Keywords:jennic  kn5121  ieee 802.15.4  wireless microcontroller  microcontroller 

Jennic has disclosed that its JN5121 single chip IEEE 802.15.4 wireless MCU is now available in volume quantities. Designed for power-efficient control within wireless sensor networks based on the IEEE 802.15.4 and ZigBee standards, this chip is said to be unique since it combines a 32bit RISC core, fully-compliant 2.4GHz IEEE802.15.4 transceiver and integrated 64KB ROM and 96KB RAM memory blocks, all in a single 8-by-8mm 56 lead QFN chip package.

Manufactured on IBM's 7RF low cost RF CMOS process which is designed for RF and low power wireless applications, this wireless MCU provides a versatile general purpose solution for a diverse range of low power sensor network applications, ranging from simple point-to-point to complex mesh requirements in home, building and industrial control, and automation systems.

Unlike other proposed solutions, the company said, the JN5121 features a high-level of integration to help reduce overall system cost, and allowing very small low power modules to be constructed. Other features include an integrated hardware MAC for highly secure AES encrypted data flow, integrated sleep oscillator and power saving facilities for low system power consumption, and a wide range of industry standard peripherals and interfaces. Jennic added that this integrated functionality ensures that a minimum of external components are required to implement the majority of sensor and control applications, enabling modules to be designed without recourse to advanced PCB technologies.

The JN5121 only requires an additional crystal oscillator, flash memory, decoupling components and printed antenna. A reference module is available from Jennic with designs that can be readily customized to suit the application with alternative antennas, I/O and so on. The module is measures 18-by-25mm, and includes an integrated antenna, 21 multi-purpose digital I/O, an SPI port and four analog connections.

The device is controlled via the SPI or UART interfaces, whereas debug is achieved via a second UART port. The company also provides IEEE802.15.4 protocol software, coordinator and endpoint device evaluation boards, and software development tools.

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