原标题：ST BlueNRG-2蓝牙低功耗无线系统级芯片(SoC)开发方案

　　ST公司的BlueNRG-2是和蓝牙指标兼容的低功耗(BLE)单模式系统级芯片(SoC),基于高性能超低功耗ARM Cortex M0核,包括了256KB可编程闪存存储器,24KB SRAM,以及SPI,UART,I2C标准通信接口外设.同时还具有线性稳压器和DC/DC降压转换器,多功能计时器,看门狗,RTC和DMA控制器.工作电压1.7V-3.6V,工作温度-40℃ 到105℃,主要用在手表,健身和运动设备,消费类医疗设备,遥控,家庭和工业自动化,手机和PC外设和照明,以及安全/接近应用.本文介绍了BlueNRG-2主要特性和架构图,总线架构图以及评估板STEVAL-IDB008V1主要特性,框图,电路图,材料清单和PCB设计文件.

　　The BlueNRG-2 is a very low power Bluetooth low energy (BLE) single-mode system-on-chip, compliant with Bluetooth specification. The BlueNRG-2 extends the features of award-winning BlueNRG network processor, enabling the usage of the embedded Cortex M0 for running the user application code.

　　The BlueNRG-2 includes 256 KB of programming Flash memory, 24 KB of static RAM memory with retention (two 12 KB banks) and SPI, UART, I²C standard communication interface peripherals. It also features multifunction timers, watchdog, RTC and DMA controller.

　　An ADC is available for interfacing with analog sensors, and for reading the measurement of the integrated battery monitor. A digital filter is available for processing a PDM stream.

　　The BlueNRG-2 offers the same excellent RF performance of the BlueNRG radio, and the integrated high efficiency DC/DC converter keeps the same ultra-low power characteristics, but the BlueNRG-2 improves the BlueNRG sleep mode current consumption allowing a further increase in the battery lifetime of the applications.

　　The BlueNRG-2 integrates:

　　 ARM Cortex-M0 core

　　 Interrupts management

　　 256 KB Flash memory

　　 24 KB of RAM with two retention options (12 KB or 24 KB)

　　 Power management

　　 Clocks

　　 Bluetooth low energy radio

　　 Random number generator (RNG) (reserved for Bluetooth low energy protocol stack, but user applications can read it)

　　 Public Key Cryptography (PKA) (reserved for Bluetooth low energy protocol stack)

　　 Peripherals:

　　 SPI interface

　　 UART interface

　　 I²C bus interface

　　 GPIO

　　 Multifunction timer

　　 DMA controller

　　 Watchdog

　　 RTC

　　 ADC with battery indicator and temperature sensor

　　 PDM stream processor

　　BlueNRG-2主要特性:

　　Bluetooth low energy single mode system-on-chip compliant with Bluetooth 4.2specification:

　　master, slave and multiplesimultaneous roles

　　LE Data Packet Length Extension

　　Operating supply voltage: from 1.7 to 3.6 V

　　Integrated linear regulator and DC-DC step-down converter

　　Operating temperature range: -40 ℃ to 105℃

　　High performance, ultra-low power Cortex-M0 32-bit based architecture core

　　Programmable 256 KB Flash

　　24 KB RAM with retention (two 12 KBbanks)

　　1 x UART interface

　　1 x SPI interface

　　2 x I²C interface

　　14, 15 or 26 GPIOs

　　2 x multifunction timer

　　10-bit ADC

　　Watchdog & RTC

　　DMA controller

　　PDM stream processor

　　16 or 32 MHz crystal oscillator

　　32 kHz crystal oscillator

　　32 kHz ring oscillator

　　Battery voltage monitor and temperaturesensor

　　Up to +8 dBm available output power (atantenna connector)

　　Excellent RF link budget (up to 96 dB)

　　Accurate RSSI to allow power control

　　8.3 mA TX current (@ -2 dBm, 3.0 V)

　　Down to 1 μA current consumption withactive BLE stack (sleep mode)

　　Suitable for building applications compliantwith the following radio frequencyregulations: ETSI EN 300 328, EN 300 440,FCC CFR47 Part 15, ARIB STD-T66

　　Pre-programmed bootloader via UART

　　QFN32, QFN48 and WCSP34 packageoptions

　　BlueNRG-2应用:

　　Watches

　　Fitness, wellness and sports

　　Consumer medical

　　Security/proximity

　　Remote control

　　Home and industrial automation

　　Assisted living

　　Mobile phone peripherals

　　Lighting

　　PC peripherals

　　评估板STEVAL-IDB008V1

　　The STEVAL-IDB008V1 is an evaluation platform based on the BlueNRG-2, low power Bluetooth® smart system on chip with 256 KB Flash , 24 KB RAM, compliant with the Bluetooth SMART specification, supporting master, slave and simultaneous master-and-slave roles and Bluetooth low energy extended data length feature.

　　The STEVAL-IDB008V1 also provides a set of hardware resources for implementing a wide range of application scenarios: sensor data (accelerometer, pressure and temperature sensor), remote control (buttons and LEDs) and debug message management though USB virtual COM. Three power options are available (USB only, battery only, external power supply + USB) for high application development and testing flexibility.

　　评估板STEVAL-IDB008V1主要特性:

　　Bluetooth® SMART board based on the BlueNRG-2 Bluetooth low energy system on chip

　　Associated BlueNRG-2 development kit SW package including firmware and documentation

　　Up to +8 dBm available output power (at antenna connector)

　　Excellent receiver sensitivity (-88 dBm)

　　Very low power consumption: 7.7 mA RX and 8.2 mA TX at +0 dBm

　　Bluetooth® SMART specification compliant, supports master, slave, simultaneous master-and-slave roles and Bluetooth low energy extended data length feature

　　Integrated balun which integrates a matching network and harmonics filter

　　SMA connector for antenna or measuring equipment

　　3 user LEDs

　　2 user buttons

　　3D digital accelerometer and 3D digital gyroscope

　　MEMS pressure sensor with embedded temperature sensor

　　RoHS compliant

　　图.评估板STEVAL-IDB008V1外形图

　　评估板STEVAL-IDB008V1材料清单: