【基于KW41Z智能停车场管理系统】第二贴：KW41Z性能学习

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【基于KW41Z智能停车场管理系统】第二贴：KW41Z性能学习 [复制链接]

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  【基于KW41Z智能停车场管理系统】火热连载中
   第一帖：首发帖开箱评测 https://bbs.eeworld.com.cn/thread-529822-1-1.html

   上回开箱贴，让我们见到了KW41Z的庐山真面目，对于新到手的开发板，作为一个电子爱好者，当然是找到它的datasheet来好好研究熟悉啦。


   从NXP官网了解到KW41Z：
      FRDM-KW41Z是采用基于ARM® Cortex®-M0+处理器的Kinetis® W系列KW41Z/31Z/21Z (KW41Z)系列支持的开发套件，具有集成的2.4 GHz收发器，支持Bluetooth® Smart/Bluetooth®Low Energy (BLE) v4.2、Generic FSK、IEEE® 802.15.4和Thread协议。
      FRDM-KW41Z套件包含两个Freedom电路板，可用作与主处理器连接的开发板或Shield扩展板。FRDM-KW41Z的规格与Arduino™ R3引脚布局兼容，提供了更多的扩展选项。

      

Freedom电路板

      FRDM-KW41Z高灵敏度、优化的2.4 GHz无线电具有PCB F天线(可以绕过它，通过SMA连接进行测试)、多个电源选项、推拉式及电容式触摸按钮、开关、LED和集成传感器。
特性
      The KW41Z/31Z/21Z (called KW41Z throughout this document) is an ultra lowpower, highly integrated single-chip device that enables Bluetooth low energy (BLE), Generic FSK (at 250, 500 and 1000 kbps) or IEEE Standard 802.15.4 RF connectivity for portable, extremely low-power embedded systems. Applications include portable health care devices, wearable sports and fitness devices, AV remote controls, computer keyboards and mice, gaming controllers, access control, security systems, smart energy and home area networks.
     The KW41Z SoC integrates a radio transceiver operating in the 2.36 GHz to 2.48 GHz range supporting a range of FSK/GFSK and O-QPSK modulations, an ARM CortexM0+ CPU, up to 512 KB Flash and up to 128 KB SRAM, BLE Link Layer hardware, 802.15.4 packet processor hardware and peripherals optimized to meet the requirements of the target applications.
The KW41Z SoC’s radio frequency transceiver is compliant with Bluetooth version 4.2 for Low Energy (aka Bluetooth Smart or BLE), Generic FSK and the IEEE Standard 802.15.4 using O-QPSK in the 2.4 GHz ISM band. NXP provides fully certified Bluetooth Low Energy and IEEE Standard 802.15.4 protocol stacks, including Thread, and application profiles to support KW41Z.
     The KW41Z SoC can be used in applications as a "BlackBox" modem by simply adding BLE or IEEE Standard 802.15.4 connectivity to an existing embedded controller system, or used as a stand-alone smart wireless sensor with embedded application where no host controller is required.
      KW41Z has 512/256 KB of on-chip Flash and 128/64 KB of on-chip SRAM memory available to be used by customer applications and chosen communication protocol stack using a choice of either NXP or 3rd party software development tools.
      The RF section of the KW41Z SoC is optimized to require very few external components, achieving the smallest RF footprint possible on a printed circuit board. Extremely long battery life is achieved though efficiency of code execution in the Cortex-M0+ CPU core and the multiple low power operating modes of the KW41Z SoC.
       Additionally, an integrated DC-DC converter enables a wide operating range from 0.9 V to 4.2 V. The DC-DC in Buck mode enables KW41Z to operate from a single coin cell battery with a significant reduction of peak Rx and Tx current consumption. The DC-DC in boost mode enables a single alkaline battery to be used throughout its entire useful voltage range of 0.9 V to 1.795 V.

• 双模并形 BLE 和 802.15.4 无线电功能，Kinetis® KW41Z MCU
• 接收电流典型值为 6.8mA，发送电流典型值为 6.1mA，直流-直流激活
• BLE 灵敏度典型值为：-95dBm
• 通用 FSK （ 250 kbit/s 时）灵敏度典型值为：-100dBm
• 符合 802.15.4 标准的灵敏度典型值为：-100dBm
• 最大输出功率：+3.5dBm
• 出色的选择性和阻塞性能
• 48MHz ARM® Cortex®-M0+ 内核
• 高达 512KB 闪存
• 高达 128KB SRAM
• AES-128 加速器
• 真实随机数发生器（TRNG）
• 降压-升压直流-直流转换器的工作电压：0.9V 至 4.2V
• 16 位模数转换器 (ADC)
• 12 位数模转换器（DAC）
• 6 位高速模拟比较器 (CMP)
• 7mm x 7mm 层压型 QFN 小尺寸封装
• 快速天线分集，符合 802.15.4 标准
• 兼容 NXP MCU 系列
  

应用

• 家居自动化
• 门禁控制
• 家电
• 照明控制
• 智能恒温设备
• 热水器控制
• 幕墙/百叶窗控制
• 安防系统
• 楼宇自动化
• 建筑控制与监视
• 建筑暖通空调控制
• 消防/安保
• 零售定价管理
• 安全和门禁控制
• 使用数据采集
• 保健
• 健康监控
• 家用保健器械
• 机构护理
• 药物资产
• 患者监测器
  

孙洋洋

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