Jennic 公司的JN5148是超低功耗高性能無線控制器,目標應用于 ZigBee PRO網絡.器件采用增強的32位RISC處理器, 集成了2.4GHz IEEE802.15.4兼容的收發器,128KB ROM, 128KB RAM,以及各種豐富的模擬和數字接口. JN5148具有28位AES安全處理器,MAC加速器,500和667kbps數據速率,工作電壓2.0V到3.6V,主要應用在ZigBee PRO網絡,智能讀表如AMR,家庭和建筑物自動化,工業系數,遠程信息處理,遙控,游戲外設等.本文介紹了JN5148主要特性,方框圖, 單端無線電架構圖, 基帶處理器框圖, 安全處理器架構, SPI外設連接圖, 定時器單元和UART方框圖,  模擬外設方框圖和PCB天線參考模塊電路圖以及元件列表.

                  The JN5148-001 is an ultra low power, high performance
                  wireless microcontroller targeted at ZigBee PRO networking
                  applications. The device features an enhanced 32-bit RISC
                  processor offering high coding efficiency through variable
                  width instructions, a multi-stage instruction pipeline and low
                  power operation with programmable clock speeds. It also
                  includes a 2.4GHz IEEE802.15.4 compliant transceiver, 128kB of
                  ROM, 128kB of RAM, and a rich mix of analogue and digital
                  peripherals. The large memory footprint allows the device to
                  run both a network stack, e.g. ZigBee PRO, and an embedded
                  application or in a co-processor mode. The operating current
                  is below 18mA, allowing operation direct from a coin cell.

                  Enhanced peripherals include low power pulse counters running
                  in sleep mode designed for pulse counting in AMR applications
                  and a unique Time of Flight ranging engine, allowing accurate
                  location services to be implemented on wireless sensor
                  networks. It also includes a 4-wire I2S audio interface, to
                  interface directly to mainstream audio CODECs, as well as
                  conventional MCU peripherals.

                  JN5148主要特性:收發器

                  • 2.4GHz IEEE802.15.4 compliant

                  • Time of Flight ranging engine

                  • 128-bit AES security processor

                  • MAC accelerator with packet formatting, CRCs, address check,
                  auto-acks, timers

                  • 500 & 667kbps data rate modes

                  • Integrated sleep oscillator for low power

                  • On chip power regulation for 2.0V to 3.6V battery operation

                  • Deep sleep current 100nA

                  • Sleep current with active sleep timer 1.25μA

                  • <$0.50 external component cost

                  • Rx current 17.5mA

                  • Tx current 15.0mA

                  • Receiver sensitivity -95dBm

                  • Transmit power 2.5dBm

                  MCU特性:

                  • Low power 32-bit RISC CPU, 4 to 32MHz clock speed

                  • Variable instruction width for high coding efficiency

                  • Multi-stage instruction pipeline

                  • 128kB ROM and 128kB RAM for bootloaded program code & data

                  • JTAG debug interface

                  • 4-input 12-bit ADC, 2 12-bit DACs, 2 comparators

                  • 3 application timer/counters,

                  • 2 UARTs

                  • SPI port with 5 selects

                  • 2-wire serial interface

                  • 4-wire digital audio interface

                  • Watchdog timer

                  • Low power pulse counters

                  • Up to 21 DIO

                  主要優勢:

                  • Single chip integrates transceiver and microcontroller for
                  wireless sensor networks

                  • Large memory footprint to run ZigBee PRO together with an
                  application

                  • Very low current solution for long battery life

                  • Highly featured 32-bit RISC CPU for high performance and low
                  power

                  • System BOM is low in component count and cost

                  • Extensive user peripherals

                  JN5148主要應用:

                  • Robust and secure low power wireless applications

                  • ZigBee PRO networks

                  • Smart metering (e.g. AMR)

                  • Home and commercial building automation

                  • Location Aware services – e.g. Asset Tracking

                  • Industrial systems

                  • Telemetry

                  • Remote Control

                  • Toys and gaming peripherals

                  圖1.JN5148 方框圖

                  圖2.JN5148單端無線電架構圖

                  圖3.JN5148基帶處理器框圖

                  圖4.JN5148安全處理器架構

                  圖5.JN5148 SPI方框圖

                  圖6.JN5148典型SPI外設連接圖

                  圖7.JN5148定時器單元方框圖

                  圖8.JN5148 UART方框圖

                  圖9.JN5148模擬外設方框圖

                  圖10.JN5148 PCB天線參考模塊電路圖

                  JN5148 PCB天線參考模塊電路圖元件列表