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Low-Power Embedded Solutions for IoT Sensor Nodes By Alexis Alcott Sr. Product Marketing Manager, MCU16 Division Microchip Technology Inc.

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Presentation on theme: "Low-Power Embedded Solutions for IoT Sensor Nodes By Alexis Alcott Sr. Product Marketing Manager, MCU16 Division Microchip Technology Inc."— Presentation transcript:

1 Low-Power Embedded Solutions for IoT Sensor Nodes By Alexis Alcott Sr. Product Marketing Manager, MCU16 Division Microchip Technology Inc.

2 2 Internet-Enabled Applications IoT Sensor Node

3 3 IoT Sensor Nodes Application Requirements l Low Power for Longest Possible Battery Life l Integrated Analog for Sensor Interface l Flexible Wireless Connection l Secure Data Transfer & Storage

4 Low Power MCU

5 5 Power Mode Clock Speed Program Flow MCU Run Power – 3 Factors

6 6 RUN DOZE IDLE SLEEP DEEP SLEEP RAM Retention Mode nA mA µA Core runs at slower speed, 25%-65% saved Core off, peripherals run 75% saved Core off, RAM on Most peripherals off Low V Regulator Enabled, 90% Savings Core off, RAM off Reset, peripherals off LV SLEEP MCU Power Modes

7 7 l Frequency l 32 MHz is 5 mA l 8 MHz is 1.3 mA 1 MHz is 150 µA 32 kHz is 26 µA Spans 256 Hz to 32 MHz, under software control! MCU Clock Speeds

8 8 MCU Program Flow l Utilize peripherals that can operate while CPU is off (Idle) l ADC l Comparators l UART/SPI/I 2 C™ l PWMs l Timers PeripheralRun Mode Idle Mode % Saved (3) ADC520 µA250 µA52% Comparator340 µA70 µA79% SPI520 µA250 µA52% Timers320 µA50 µA84%

9 9 Battery-Life Estimation Without Power Modes l No Power modes l Battery life 47 days l Annoying! l Avg. Current 2.5 mA

10 10 Adopt New Modes l Sleep during sensor acquisition l ADC runs in sleep l Use Idle mode when communicating to radio l UART active, shut down core & Flash l Sleep during radio transmission l No MCU activity required l Wait to ensure transmission successful l Deep Sleep rest of time l Use RTCC to wake up 1 sec. later

11 11 Battery-Life Estimation With Power Modes l With Power modes l Battery life is 1 year l 800% Increase! Current Reduced 10X l Sleeping for 1 minute increases to 2 years

12 Integrated Analog

13 13 Integrated Analog Peripherals l Easy Interface to Sensors l Debugged noise and communication l Designer gets consistent analog performance across applications l Benefits of Integration l Faster data path, reduced noise l Intelligent connections inside the chip l Simplify board designs, reduce board space l Lower-cost designs, faster time to market

14 14 Without Intelligent Analog Noise coupled from USB to ADC ADC signal shielding increases board size Complex routing for signals and shields Multiple power planes for analog & digital

15 15 With Intelligent Analog Saved Board Area & Cost Routing, shielding, power planes integrated & debugged in chip ADC, DAC, OpAmp, USB all integrated to MCU, lowers cost & space Design simplified, throughput increased

16 16 PIC24 “GC” Family l 16-bit Sigma-Delta ADC l High dynamic range & high resolution l More information (3µV) eliminates need for amplifier l 12-bit ADC l Ultra-high-speed data capture at 10 Msps l High-speed sensors, touch, communications l 10-bit DACs l Analog control loops, stereo audio l Stimulus or thresholds l Operational Amplifiers l Analog control loops, Mic pre-amp, Signal conditioning l 2.5 MHz Gain-Bandwidth, low power mode l Internal Analog Connection Switch Matrix l 472-Segment LCD Driver with Voltage Boost

17 17 Easy Prototyping – Add Your Sensor l On-Board Sensors l Light l Temperature l Touch l Analog Header l Clean Analog Signals l Plugs Into Breadboards l Rich Display l Connectivity l USB OTG, Host & Device l RF Module Footprint l Integrated Debugger PIC24F Intelligent Analog Starter Kit Part Number: DM240015

18 Wireless Connection

19 19 l Embedded products: low power, low free resource host processors l Get on the network, transfer data, and get off l Communicate with other things or users via Internet Microchip Focus: Wireless Connectivity of Things Home health and MedicalSmart Power/Energy Industrial Control and MonitoringHome Control and Monitoring

20 20 How to Connect? Your Application!

21 21 Embedded Wireless Portfolio TechnologyProtocolMarkets Market Driver Network Stack Freq. Embedded Wi-Fi ® IEEE Widespread Commercial Industrial InternetTCP/IP2.4 GHz Embedded Bluetooth ® IEEE Widespread Commercial Industrial Smartphone BT v2.1, BT Audio, BTLE 2.4 GHz Embedded Wireless Proprietary or IEEE Vertical HA, SEP, Sensors Cost Local Network MiWi™, BT, ZigBee ®, RF4CE, Sub 1 GHz & 2.4 GHz

22 22 Microchip’s Bluetooth ® Portfolio RN41 / 41NRN42 / RN42NRN52RN4020 Type Class 1 Bluetooth ® 2.1 Class 2 Bluetooth 2.1 Class 2 Bluetooth 3.0 Bluetooth LE Interfaces UART / USB Analog spk and mic, i2S, SPDIF, PCM, UART UART Profiles SPP / HID / iAP / HCI A2DP / ARVCP / HSP / HFP / SPP / iAP GATT, Health, Fitness, Proximity, etc.; Custom data Power 3.3 VDC Antenna ceramic on boardPCB Size 13.4 x 25.8 x x 30 x x 19.5 x2.0 Certification BT SIG / FCC / CE / ICS

23 23 Microchip’s Wi-Fi ® Modules MRF24WB0MA MRF24WB0MB MRF24WG0MA MRF24WG0MB RN171RN131C/G Radiobb/g Tx Power+10 dBm+18 dBm+12 dBm+18 dBm Power Consumption 250 µA power save 85 mA Rx 150 max Tx 4 mA power save 95 mA Rx 240 max Tx 4 µA sleep 35 mA Rx 185 max Tx 4 µA sleep 40 mA Rx 200 max Tx Antennau.FL / PCB RF padChip/u.FL StackOn PIC ® MCUOn PIC MCUIntegrated MCU Support 8/16/32 bit PIC MCUs 8/16/32 bit PIC MCUs Any 8/16/32 bit Certifications FCC/IC/EN Wi-Fi ® Alliance FCC/IC/EN Wi-Fi Alliance FCC/IC/EN KC/NCC Wi-Fi Alliance FCC/IC/EN KC/NCC/Telec Wi-Fi Alliance

24 24 Microchip’s ZigBee ® & MiWi™ IEEE Sub-GHz MRF89XAM8A 868 MHz (EU) MRF89XAM9A 915 MHz (US,CA) MRF49XA 433/868/915 MRF89XA 868/915/950 MRF24J40MA +0dBm MRF24J40MD +20dBm, PCB Ant MRF24J40MC +20dBm, Ext Ant MRF24J40 MRF24XA Low power

25 25 Flexible Wireless Connection l Use the same MCU platform, as your wireless connectivity needs change l Easy to interface to any PIC ® MCU l UART or SPI l Easy daughter board to expand your PIC MCU dev board ecosystem l Certified wireless modules l Speed development time l Faster product introduction

26 Secure Data

27 27 PIC24F “GB2” Family l PIC24F “GB2” MCUs for Protecting Data in Embedded Applications l Hardware crypto engine (Industry standard AES, DES, 3DES) l Random Number Generator (RNG) l One-Time-Programmable (OTP) Key Storage l eXtreme Low Power Extends Battery Life l 18 nA Sleep, 200 µA/MHz Run l Enabling Integrity of Data without Sacrificing Power Consumption l Connection to USB or Wireless Protocols l Integrated USB 2.0 Device, Host, OTG l Easy Connection to Certified Modules for Wi-Fi ®, ZigBee ®, Sub-GHz, Bluetooth ® LE

28 28 Integrated Crypto Engine l Hardware Crypto Engine l Industry Standards for AES, DES, 3DES l Encryption & Decryption & Authentication l Secure Data Transfer & Storage l Random Number Generator l Supporting True-Random and Pseudo-Random Numbers l Reach a Higher Level of Data Security l Reduces Possibility for Hacking l Secure Key Storage for Additional Protection l 512 bits OTP Key Storage l Once Written, Keys cannot be Read or Overwritten by Software l Stores up to 4 AES Keys or 8 DES Keys l Advantage of a Hardware Crypto over Software Implementation l Less Software Overhead Frees Up CPU Bandwidth & Memory l Operate at a Lower CPU Frequency to Save Power l Another Example of Microchip’s Core Independent Peripherals

29 29 PIC24 “GB2” Block Diagram

30 30 Application Example: Remote Electronic Door Lock l Encryption for Security l Uses Crypto, RNG & Key Storage l User data is encrypted l Secure key storage l eXtreme Low Power l Low power extends battery life l Vbat with RTCC for battery backup l Access Options l Enter code manually via keypad l Magnetic keycard l Wirelessly via Smartphone MCU Core 128KB Flash Motor Control Unit Vbat Display Unit Hardware encryption/ Secure Key storage Key pad control (touch) CTMU Door Latch PIC24FJ128GB204 Digital I/O UART Bluetooth ® LE RN4020 Magnetic Card Near Field Communication (NFC) Power Interrupt

31 31 PIC24F “GB2” MCU Family Low Power with Crypto Engine l Embedded Applications in the Internet-Connected World Demand Secure Data & Long Battery Life l PIC24F “GB2” for Secure Data Transfer & Storage l Hardware Crypto Engine l Random Number Generator & Secure Key Storage l PIC24F “GB2” for eXtreme Low Power l Longer battery life for portable applications l PIC24F “GB2” for Easy Connection l Integrated USB l Easy interface to certified Wi-Fi ® or Bluetooth ® LE modules

32 Summary

33 33 IoT Sensor Nodes Application Requirements l Low Power for Longest Possible Battery Life l Integrated Analog for Sensor Interface l Flexible Wireless Connection l Secure Data Transfer & Storage Note: The Microchip name and logo, and PIC are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. MiWi is a trademark of Microchip Technology Inc. in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective companies.


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