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Data Sheet – JN5121

IEEE802.15.4 / ZigBee Wireless Microcontrollers

Overview

The JN5121 is the first in a series of low power, low cost IEEE802.15.4 compliant wireless microcontrollers. Combining an on chip 32-bit RISC core, a fully compliant 2.4GHz IEEE802.15.4 transceiver, 64kB of ROM and 96kB of RAM, provides a versatile low cost solution for wireless sensor networking applications. The high level of integration helps to reduce the overall system cost. In particular, the ROM enables integration of point-to-point and mesh network stack protocols, and the RAM allows support of router and controller functions without the need for additional external memory. The JN5121 uses hardware MAC and highly secure AES encryption accelerators for low power and minimum processor overhead. Integrated sleep oscillator and power saving facilities are provided, giving low system power consumption. The device also incorporates a wide range of digital and analogue peripherals for the user to connect to their application. Features: Transceiver • 2.4GHz IEEE802.15.4 compliant • Security processor (128-bit AES) • MAC accelerator with packet formatting, CRCs, address check, auto-acks, timers • Integrated power management and sleep oscillator for low power • On-chip power regulation for 2.2V to 3.6V battery operation

Block Diagram

• Sleep current (with active beacon timer)
RAM96kB ROM64kBRISC CPU SPI • Needs minimum of external components (<1US$ extra cost)
2.4GHz Radio O-QPSKModem 2-wire serial • Rx current
Timers • Receiver sensitivity -90dBm
IEEE802.15.4MACAccelerator UARTs • Transmit power 0dBm
XTAL 12-bit ADC,comparator Features: Microcontroller
PowerManagement 128-bit AESEncryptionAccelerator • 16MHz 32-bit RISC o p timised for low power (3MIPS/mA) and efficient code density
11-bit DACs,temp sensor • 96kB RAM for shared program, data and routing tables • 64kB ROM for program code Benefits Applications • 4-input 12-bit ADC, 2 11-bit DACs, comparator, temperature sensor • Single chip solution with integrated transceiver and microcontroller for wireless sensor networks • Robust and secure low power wireless applications • Wireless sensor networks, particularly IEEE802.15.4 / ZigBee systems • 2 Application timer/counters, 3 system timers • Capacity and power efficient microcontroller for both controllers and sensor units • 2 UARTs (one for in-system debug) • Home and commercial building automation • Low application BOM cost and size • SPI port with 5 selects • Home networks • 2 wire serial interface • Hardware MAC ensures low p ower consumption and low processor overhead • Toys and gaming peripherals • 21 GPIO • Industrial systems Industrial temperature range (-40°C to +85°C) • Extensive user peripherals • Telemetry and utilities (e.g. AMR) 8x8mm 56 lead QFN package Lead-free and RoHS compliant
i JN-DS-JN5121 v1.8 © Jennic 2007 Preliminary