摘要:TI公司的MSP430FR5969是超低功耗(ULP) FRAM平台,集成了嵌入FRAM和超低功耗系统16位RISC架构,工作频率16MHz,工作电压1.8V-3.6V,工作模式功耗100 µA/MHz,关断功耗0.02 µA,主要用在计量,传感器管理,数据采集,可穿戴电子和能量收获传感器节点.本文介绍了MSP430FR5969主要特性,功能框图,以及TIDA-00373智能照明参考设计主要特性,框图,电路图和材料清单.

The MSP430 ultra-low-power (ULP) FRAM platform combines uniquely embedded FRAM and a holistic ultra-low-power system architecture, allowing innovators to increase performance at lowered energy budgets. FRAM technology combines the speed, flexibility, and endurance of SRAM with the stability and reliability of flash at much lower power.
The MSP430 ULP FRAM portfolio consists of a diverse set of devices featuring FRAM, the ULP 16-bit MSP430 CPU, and intelligent peripherals targeted for various applications. The ULP architecture showcases seven low-power modes, optimized to achieve extended battery life in energy-challenged applications.

MSP430FR5969主要特性:

Embedded Microcontroller
16-Bit RISC Architecture up to 16‑MHz Clock
Wide Supply Voltage Range: (1.8 V to 3.6 V) (Minimum supply voltage is restricted by SVS levels.)
Optimized Ultra-Low-Power Modes
Active Mode: Approximately 100 µA/MHz
Standby (LPM3 With VLO): 0.4 µA (Typical)
Real-Time Clock (LPM3.5): 0.25 µA (Typical) (RTC is clocked by a 3.7-pF Crystal.)
Shutdown (LPM4.5): 0.02 µA (Typical)
Ultra-Low-Power Ferroelectric RAM (FRAM)
Up to 64KB of Nonvolatile Memory
Ultra-Low-Power Writes
Fast Write at 125 ns Per Word (64KB in 4 ms)
Unified Memory = Program + Data + Storage in One Single Space
10¹⁵ Write Cycle Endurance
Radiation Resistant and Nonmagnetic
Intelligent Digital Peripherals
32-Bit Hardware Multiplier (MPY)
Three-Channel Internal DMA
Real-Time Clock (RTC) With Calendar and Alarm Functions
Five 16-Bit Timers With up to Seven Capture/Compare Registers Each
16-Bit Cyclic Redundancy Checker (CRC)
High-Performance Analog
16-Channel Analog Comparator
12-Bit Analog-to-Digital Converter (ADC) With Internal Reference and Sample-and-Hold and up to 16 External Input Channels
Multifunction Input/Output Ports
All Pins Support Capacitive Touch Capability With No Need for External Components
Accessible Bit-, Byte-, and Word-Wise (in Pairs)
Edge-Selectable Wake From LPM on All Ports
Programmable Pullup and Pulldown on All Ports
Code Security and Encryption
128-Bit or 256-Bit AES Security Encryption and Decryption Coprocessor
Random Number Seed for Random Number Generation Algorithms
Enhanced Serial Communication
eUSCI_A0 and eUSCI_A1 Support
UART With Automatic Baud-Rate Detection
IrDA Encode and Decode
SPI at Rates up to 10 Mbps
eUSCI_B0 Supports
I²C With Multiple Slave Addressing
SPI at Rates up to 8 Mbps
Hardware UART and I²C Bootstrap Loader (BSL)
Flexible Clock System
Fixed-Frequency DCO With 10 Selectable Factory-Trimmed Frequencies
Low-Power Low-Frequency Internal Clock Source (VLO)
32-kHz Crystals (LFXT)
High-Frequency Crystals (HFXT)
Development Tools and Software
Free Professional Development Environments WithEnergyTrace++ Technology
Development Kit (MSP-TS430RGZ48C)

MSP430FR5969应用:

• Metering
• Sensor Management
• Energy Harvested Sensor Nodes
• Data Logging
• Wearable Electronics

图1。MSP430FR5969功能框图

TIDA-00373智能照明参考设计

This system conserves power and extends the life of the backlight elements by dynamically adjusting abacklight’s brightness in reference to the ambient light in the surrounding environment. Backlightbrightness adjustments also allow a more comfortable viewing experience for the user. More powersavings and backlight life can be achieved through a sleep or standby mode. The proximity wake upfeature can sense a human is close and wakes up the system.

The optical light sensor made by Texas Instruments has good human eye spectral matching, which allowsthe system to adjust the backlight brightness to be most comfortable when viewed by the human eye. Asimple algorithm determines the ideal backlight brightness when the backlight is activated.

Proximity wake up is enabled by Texas Instruments’ capacitive-to-digital converter. A capacitive sensorlocated around the edge of the board provides a 360-degree sensing field around the board. Proximitydetection works best when approaching the front of the device.

This design guide covers component selection, measurement theory, system calibration, andenvironmental compensation.

This system conserves power and extends backlight life by dynamically adjusting the backlight brightness relative to the environment’s ambient light.  A capacitive proximity sensor wakes up the system when a user is close to save even more power.
This reference design uses the HDC1000. This reference design can also be used with the HDC1008. 

TIDA-00373智能照明参考设计主要特性:

Detects Human Proximity Using Copper PCB Material or Other Conductive Materials
Good Human Eye Spectral Matching
Dynamically Adjust Backlight Brightness
UV Filter for Outdoor Use
Humidity and Temperature Sensor
This subsystem is tested and includes hardware files, firmware, demo, and Getting Started Guide

TIDA-00373智能照明参考设计特性应用:

• Building Automation
• Proximity Detection
• Smart Thermostat
• Smart Lighting
• Control Panels
• Connector for Wireless Solutions

图2。TIDA-00373智能照明参考设计框图

The Backlight and Smart Lighting Control reference design features the following devices:
• OPT3001: Single-chip lux meter, measuring light intensity as visible by the human eye with IR rejection
• FDC1004: Four-channel capacitance-to-digital converter for capacitive sensing solutions
• HDC1000: Digital humidity sensor with integrated temperature sensor
• MSP430FR5969: 16-MHz ULP microcontroller featuring 64-KB FRAM, 2-KB SRAM, 40 I/O
• TLV71333P: Low quiescent current LDO with excellent line and load transient performance
• LM3630A: High-efficiency, dual-string white LED driver
• TPD2E2U06: Dual-channel, ultra-low capacitance ESD-protection device


图3。TIDA-00373智能照明参考设计ISE4024外形图(正面)

图4。TIDA-00373智能照明参考设计ISE4024外形图(背面)

图4。TIDA-00373智能照明参考设计电路图(1)

图5。TIDA-00373智能照明参考设计电路图(2)

图6。TIDA-00373智能照明参考设计电路图(3)

图7。TIDA-00373智能照明参考设计电路图(4)

图8。TIDA-00373智能照明参考设计电路图(5)
TIDA-00373智能照明参考设计材料清单:



详情请见:
http://www.ti.com/lit/ds/symlink/msp430fr5969.pdf
和http://www.ti.com/lit/ug/tidu781/tidu781.pdf