原标题：基于nRF52832蓝牙芯片的智能手环解决方案

　　在低功耗无线领域有着数十年深厚积累的Nordic半导体，他们的主要产品是物联网必不可少的低功耗无线解决方案。其在1998年推出的2.4Ghz无线产品奠定了它在业界的标杆地位。之后推出的超低功耗无线SoC nRF51系列，利用其高度整合、性能、灵活性和使用嵌入式协定堆叠在 SoC 上开发无线应用程序的易用性等优点，将蓝牙无线应用的简便性推前一大步。

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　　智能手环蓝牙芯片

　　2015年6月， Nordic推出了其新一代的nRF52系列的超低功耗无线解决方案的首款产品nRF52832，并重新定义了单芯片蓝牙产品。

　　nRF52832较之nRF51系列， 功耗的降低和性能的提升是最大的亮点， nRF51系列的功耗约为8.3mA到10mA，而nRF52832的峰值功耗也才5.5mA。而nRF52系列采用的64MHz ARM处理器较之上一代产品也有很大的提升。性能的提高、功耗的降低，可以应对日后不同的蓝牙需求，这是nRF52系列最大的优势。

　　最近，Nordic半导体又推出了支持蓝牙5.0的nRF52840系统级芯片(SoC)。输出功率增加、闪存翻倍、RAM存储器提高至4倍。丰富的通用处理能力、浮点以及DSP性能的CPU，能满足更苛刻的应用要求。与蓝牙4.2的低功耗蓝牙方案相比，nRF52840 SoC提供4x距离或2倍原始数据带宽(2Mbps)的低功耗蓝牙无线连接性。其出色的能力或将重新定义单芯片低功耗蓝牙应用。

　　爱都科技作为Nordic中国区战略合作伙伴之一的智能手环ODM服务商，在往后的智能穿戴领域中也将与之持续保持优质的合作。为爱都手环的进一步发展与升级制定有力的保障!

【nRF52832】

Advanced performance Bluetooth5/ANT/2.4GHz proprietary SoC

Active

The nRF52832 SoC is a powerful, highly flexible ultra-low power multiprotocol SoC ideally suited for Bluetooth® low energy (previously called Bluetooth Smart), ANT and 2.4GHz ultra low-power wireless applications. The nRF52832 SoC is built around a 32-bit ARM® Cortex™-M4F CPU with 512kB + 64kB RAM. The embedded 2.4GHz transceiver supports Bluetooth low energy, ANT and proprietary 2.4 GHz protocol stack. It is on air compatible with the nRF51 Series, nRF24L and nRF24AP Series products from Nordic Semiconductor.

Bluetooth 5

The nRF52832 has hardware support on-chip for Bluetooth 5. This includes high throughput and advertising extension.

Processing power

The nRF52832 incorporates a powerful Cortex-M4F processor enabling the most demanding applications with complex arithmetic requirements to be realized in a single chip solution. The IC supports DSP instructions, a Floating Point Unit (FPU), single-cycle multiply and accumulate, and hardware divide for energy-efficient process of computationally complex operations.

Multiprotocol radio

The 2.4GHz radio supports multiple protocols including Bluetooth Low Energy, ANT and 2.4GHz proprietary. The radio has high definition RSSI and highly automated functionality, including EasyDMA for direct memory access during packet send and retrieve. Nordic provides protocol stacks for Bluetooth Low Energy. ANT protocol stacks are available from ANT here: www.thisisant.com.

Power Efficiency

The nRF52832 SoC is an extremely power efficient device that can run from a supply between 1.7V and 3.6V. All individual peripherals and clocks offer complete flexibility of power down when not required for task operation thus minimizing power consumption to a minimum. The IC has a comprehensive system of automated and adaptive power management features. These features range across the entire IC’s operation from power supply switching to peripheral bus/EasyDMA memory management, to automated shut down of all but the absolute essential peripherals required to perform a task.

On-chip NFC tag

NFC™-A tag support is included on chip. Out-of-Band (OOB) pairing using NFC simplifies the process of authenticated pairing between two Bluetooth devices by exchanging authentication information over an NFC link.

Package options

The nRF52832 is available in 6x6mm 48-pin QFN packages and 3.0x3.2mm ultra-compact wafer-level chip-scale packages (WL-CSP).

SoftDevice

The nRF52832 is supported by the S132 SoftDevice, a Bluetooth 5 pre-qualified protocol stack. Click for more information on nRF52 Series in our Infocenter

FEATURES

Single chip, highly flexible, 2.4 GHz multi-protocol SoC

32-bit ARM Cortex-M4F Processor

1.7v to 3.6v operation

512kB flash + 64kB RAM

Supports concurrent Bluetooth low energy/ANT protocol operation

On-chip NFC tag for Out-of-Band (OOB) pairing

Up to +4dBm output power

-96dBm sensitivity, Bluetooth low energy

Thread safe and run-time protected

Event driven API

On air compatible with nRF24L and nRF24AP series

2 data rates (2Mbps/1Mbps)

PPI - maximum flexibility for power-efficient applications and code simplification

Automated power management system with automatic power management of each peripheral

Configurable I/O mapping for analog and digital I/O

3 x Master/Slave SPI

2 x Two-wire interface (I²C)

UART (RTS/CTS)

3 x PWM

AES HW encryption

12-bit ADC

Real Time Counter (RTC)

Digital microphone interface (PDM)

On-chip balun

APPLICATIONS

Internet of Things (IoT)

Wearables

SmartHome sensors

Connected white goods

Computer peripherals

Voice-command smart remotes

A4WP ‘Rezence’ wireless charging

Beacons

Sports and fitness sensors and hubs

Connected health products

Smart watches

RC Toys

Interactive games

Building automation and sensor networks

Nordic Semiconductor公司宣布提供其nRF52832低功耗蓝牙(Bluetooth® low energy) (前称为蓝牙智能)系统级芯片(SoC)的晶圆级芯片尺寸封装(WL-CSP)产品,占位面积为标准封装nRF52832器件的四分之一,为瞄准新一代高性能可穿戴产品而设计。

与体积较大但封装简便、具标准6.0 X 6.0mm占位面积的nRF52832 QFN48器件相比,nRF52832 WL-CSP器件具有超紧凑3.0 X 3.2mm占位面积,并提供相同的全功能单芯片特性集和同级最佳超低功耗应用运作; 其功能强大的板载64MHz ARM® Cortex®-M4F处理器能够在前所未有的短时间内完成协议和应用任务的处理,使得它能够在比其它竞争对手的器件更短时间内进入睡眠模式以节省功率。

nRF52832 WL-CSP器件与nRF52832器件同样具有512kB闪存和64kB RAM;用于消费者友好的触摸配对(Touch-to-Pair)片上NFC™ 标签;同级最佳超高性能;超低功耗多协议低功耗蓝牙、ANT™,以及专有2.4GHz无线电、5.5mA峰值RX/TX电流,以及片上RF 巴仑;还有方便设计人员实现最佳功耗的独特全自动功率管理系统。

nRF52832 WL-CSP器件兼容Nordic的蓝牙4.2堆栈并支持SDK,包括最新S132多用途并行软件堆栈、nRF5 SDK、nRF5 SDK for HomeKit 和用于谐振无线充电的nRF5 SDK for Airfuel。

Nordic Semiconductor超低功耗无线产品经理Kjetil Holstad评论道:“超紧凑占位面积nRF52832器件面世,为可穿戴产品和其它空间受限IoT应用带来了全新的设计机会,这款SoC器件现在进行批量生产,可立即用于即将进行的产品开发中。迄今为止,可穿戴产品的演进仅有一个进化方向:日益增加的性能和功能性,以及日益纤细而且更轻巧的外形尺寸。nRF52832 WL-CSP器件明显是现今市场上最小并且最先进的低功耗蓝牙SoC器件。”

nRF52832 WL-CSP器件现已批量生产。