MetaWear Wearable and connected devices product solution Preliminary Product Specification v0.5 Key Features Nordic Semiconductor nRF51822 BLE SoC 2.4 GHz transceiver ARM Cortex-M0 32 bit processor 256 kB flash program memory 16 kB RAM 8/9/10 bit ADC Freescale MMA8452Q 3-Axis Accelerometer 2g/4g/8g selectable scale 12-bit/8-bit resolution Data rates from 1.56 Hz to 800 Hz Embedded event detection processor Lithium Ion/Polymer battery charger CC/CV charging to 4.2V Automatic pre-conditioning trickle charge 90mA charge current for ultra portable batteries Ultra-Bright RGB LED with 20mA driver Miniature push-button switch High current driver for external vibration motor Micro-USB rechargeable Battery charge monitor I/O Expansion Digital I2C Bus 4 Analog/Digital Pins 4 Digital Pins Tiny 26mm x 17mm x 2.5mm form factor Pending FCC, CE, IC C-Tick certification MetaWear Preliminary Product Specification Table of Contents 1Introduction.............................................................................................................................................4 2ProductOverview.....................................................................................................................................4 2.1PinAssignments................................................................................................................................4 2.2PinFunctions.....................................................................................................................................5 4AbsoluteMaximumRatings.....................................................................................................................6 5OperatingConditions...............................................................................................................................6 6ElectricalSpecifications............................................................................................................................6 6.1GeneralPurposeI/O(GPIO)Specifications.......................................................................................6 6.2CrystalOscillatorSpecifications........................................................................................................7 6.3ADC(ADC)Specifications..................................................................................................................7 6.4TemperatureSensor(TEMP)Specifications......................................................................................7 6.5BatteryCharger(BC)Specifications..................................................................................................8 6.6HighCurrentDriver(HCD)Specifications..........................................................................................8 6.7SystemVoltageRegulator(VREG)Specifications..............................................................................8 6.8Accelerometer(ACCEL)Specifications..............................................................................................9 6.9LED+Driver(LED)Specifications......................................................................................................9 7MechanicalSpecifications......................................................................................................................10 8TypicalApplicationCircuit......................................................................................................................11 9RevisionHistory......................................................................................................................................11 10RegulatoryStatements.........................................................................................................................12 10.1FCCStatements.............................................................................................................................12 10.1.1OEMIntegrationRequirements.............................................................................................12 10.2FCCLabelingRequirements...........................................................................................................13 10.3ICStatements................................................................................................................................13 10.4ICLabelingRequirements..............................................................................................................13 11InformationtotheUser.......................................................................................................................13 11.1FCCPart15.21...............................................................................................................................13 Page2 MetaWear Preliminary Product Specification Page3 MetaWear Preliminary Product Specification 1 Introduction MetaWearisacompletedevelopmentandproductionplatformforwearableandconnected deviceapplications.ItfeaturestheultralowpowernRF51822SoC,providingenergyefficient smartphonecommunicationandcentralprocessing.MetaWearintegratesthisradiowithhigh valuesensorsandarechargeablebatteryarchitectureintoaminiatureformfactor.Allcircuits havebeendesignedfromthegroundupwithenergyefficiencyinmind. 2 Product Overview 2.1 Pin Assignments Figure 1 Module Pin Assignments Page4 2.2 Pin Functions Pin PinName Function Description MetaWear Preliminary Product Specification VUSB VBAT VGND VGND SDA SCL V3V Power Power Power Power DigitalI/O DigitalI/O Power PowerSupply 1 2 3 DigitalPeripheralBus 4 5 6 7 Analog/HighCurrentDriverBus DigitalI/O AnalogI/O DigitalI/O AnalogI/O HighCurrent Driver 11 Power SurfaceMountExtraBreakout DIO0 AIN0 DIO1 AIN1 HCD V3V 10 8 9 12 13 14 15 16 17 DIO2 AIN2 DIO3 AIN3 DIO4 DIO5 DIO6 DIO7 DigitalI/O AnalogI/O DigitalI/O AnalogI/O DigitalI/O DigitalI/O DigitalI/O DigitalI/O PositivesupplyalternativetomicroUSBport. Positivebatteryconnection. Groundconnectionintendedforbattery. Supplementarygroundforperipheralexpansion. I2Cserialdata. I2Cserialclock. Regulated3Voutputforperipheralexpansion. GeneralpurposeI/Oandanaloginput. GeneralpurposeI/Oandanaloginput. Switchforsinkinghighcurrentperipherals. Regulated3Voutputforhighcurrentperipheral. GeneralpurposeI/Oandanaloginput. GeneralpurposeI/Oandanaloginput. GeneralpurposeI/O. GeneralpurposeI/O. GeneralpurposeI/O. GeneralpurposeI/O. Table 1 Pin Functions Page5 4 Absolute Maximum Ratings MetaWear Preliminary Product Specification 0.3 40 Table 2 Absolute Maximum Ratings Spec VUSB VBAT VGND VIO TMAX Description USBchargingvoltage. Lithiumbatteryvoltage. Groundvoltage I/OPinVoltage StorageTemperature 5 Operating Conditions Spec VUSB VBAT TA IIDLE Description USBchargingvoltage. Lithiumbatteryvoltage. Operatingtemperature. Idlecurrentconsumption. Min. Typ. Max. Units 0.3 0.3
+8.0
+6.0 0
+3.3 125 V V V V C Min. Typ. Max. Units 4.0 3.0 25 5.0 3.7 25 5 7.5 4.2 75 8 V V C uA Table 3 Operating Conditions 6 Electrical Specifications 6.1 General Purpose I/O (GPIO) Specifications Spec VIH VIL VOH VOL RPU RPD Description Inputhighvoltage. Inputlowvoltage. Outputhighvoltage. Outputlowvoltage. Pullupresistance. Pulldownresistance. 13 13 Table 4 General Purpose I/O (GPIO) Specifications Min. Typ. Max. Units 2.1 0 2.7 0 11 11 3.0 0.9 3.0 0.3 16 16 V V V V k k Page6 Spec fHF,NOM fHF,TOL fLF,NOM fHF,TOL Spec DNL10b INL10b VOS VREF_INT TCREF_INT tADC10b tADC9b tADC8b Spec TRANGE TACC TRES 6.2 Crystal Oscillator Specifications MetaWear Preliminary Product Specification Description Highfrequencycrystalfrequency Highfrequencycrystaltolerance Lowfrequencycrystalfrequency Lowfrequencycrystaltolerance Min. Typ. Max. Units 16 MHz ppm 40 kHz ppm 50 32.768 Table 5 Crystal Oscillator Specifications 6.3 ADC (ADC) Specifications Description Differentialnonlinearity(10bitmode). Integralnonlinearity(10bitmode). Offseterror. Internalreferencevoltage. Internalreferencevoltagedrift. Sampleconversiontime(10bitmode). Sampleconversiontime(9bitmode). Sampleconversiontime(8bitmode). Table 6 ADC Specifications Min. 2 1.5 200 Typ. Max. Units LSB
<1 LSB 2
+2
+1.5
+200 1.20V 68 36 20 ppm/C s s s 6.4 Temperature Sensor (TEMP) Specifications Description Temperaturesensorrange. Temperaturesensoraccuracy. Temperaturesensorresolution. Typ. Max. Units Min. 25 4 0.25 Table 7 Temperature Sensor (TEMP) Specifications 75
+4 C C C Page7 6.5 Battery Charger (BC) Specifications MetaWear Preliminary Product Specification Description Operatingcurrent(VUSBpowered). Reverseleakage(VUSBdisconnected). Endofchargevoltage. Preconditioningvoltagethreshold. Rechargevoltagethreshold. Nominalchargecurrent. Preconditioningchargecurrent. Chargeterminationthresholdcurrent. Min. 4.158 2.85 81 1 2 Typ. Max. Units 0.5 mA A 0.4 V 4.20 3.0 V V mA mA mA 4.242 3.15 90 9 9 99 VBC,EOC0.1 Table 8 Battery Charger (BC) Specifications Spec IBC,OP IBC,LEAKAGE VBC,EOC VBC,PRECON VBC,RCH IBC,CHNOM IBC,PCH IBC,TERM 6.6 High Current Driver (HCD) Specifications Min. Description Steadystateoncurrentat25C. Steadystateoncurrentat85C. Steadystatepowerdissipation. Pulsedcurrentfor10s. Onstateresistance. Spec ION,SS25 ION,SS85 PON,SS ION,PULSE RON IOFF,LEAK Offstateleakage. VCLAMP 2 3.3 Table 9 High Current Driver (HCD) Specifications Clampingdiodevoltagethreshold. Typ. Max. Units mA mA mW A nA V 310 220 280 1.4 5 1 6.7 System Voltage Regulator (VREG) Specifications Spec VOUT VDO ICL IGND,IDLE Description Regulatedoutputvoltage. Lineregulation. Loadregulation. Dropoutvoltage. Outputcurrentlimit. Systemidlegroundcurrent. Table 10 System Voltage Regulator (VREG) Specifications Typ. Max. Units Min. 2.93 1 2 150 3 230 1 3.07
+1
+2 250 400 1.3 V
mV mA uA Page8 6.8 Accelerometer (ACCEL) Specifications MetaWear Preliminary Product Specification Spec fDATA I12.5 I100 I100 ISTANDBY Min. 2 256 1.56 Description Measurementrange. Resolution. Datasamplefrequency. Lowdataratecurrent(12.5Hz). Middataratecurrent(100Hz). Highdataratecurrent(800Hz). Standbycurrent. 6 24 165 1.8 Table 11 Accelerometer (ACCEL) Specifications Typ. Max. 8 1024 800 5 6.9 LED + Driver (LED) Specifications Spec IRGB RPEAK GPEAK BPEAK IvR IvG IvB Min. 21.5 Description Drivecurrentperchannel. Redpeakwavelength. Greenpeakwavelength. Bluepeakwavelength. Redluminousintensity. Greenluminousintensity. Blueluminousintensity. ViewingAngle Typ. Max. 22.2 22.9 630 515 460 120 305 75 120 Table 12 LED + Driver (LED) Specifications 60 130 45 Units g counts/g Hz uA uA uA uA Units mA nm nm nm mcd mcd mcd Page9 7 Mechanical Specifications MetaWear Preliminary Product Specification Figure 2 Module dimensions in mm Page10 8 Typical Application Circuit MetaWear Preliminary Product Specification Figure 3 Typical Application Circuit 9 Revision History Version 0.6 0.5 Date July7,2014 June2,2014 ChangeDescription AddedRegulatoryStatementsSection InitialDraft Table 13 Revision History Page11 10 Regulatory Statements MetaWear Preliminary Product Specification 10.1 FCC Statements The MetaWear module was approved for 'Limited Modular' use and complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. MetaWear may be used in devices without any further agency testing for intentional radiation compliance (FCC Part 15 Subparts C & E and IC RSS-210). 10.1.1 OEM Integration Requirements This module has a limited modular approval. Approval with any other antenna configuration or layout other than that approved will necessitate additional radiated emission testing to be performed. To inherit the modular approval, the antenna for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-
located or operating in conjunction with any other antenna or transmitter. This module is authorized for use in mobile and portable applications. Refer to FCC document KDB 447498 for more information on RF exposure procedures and equipment authorization policies for mobile and portable devices. This module was approved with the following antenna:
Walsin Technology Corporation: RFANT3216120A5T 2 dBi If you use a similar type antenna, it must have a gain that is less than or equal to the gain of these antennas. If you do not satisfy this criterion, the Limited Modular Approval no longer applies and you must recertify your product for compliance with intentional radiation regulatory requirements. Operation of this module with any other antenna might require additional testing to be performed. Co-location with other radio transmitting devices operating concurrently in the same band will require additional testing and certification. Page12 10.2 FCC Labeling Requirements MetaWear Preliminary Product Specification If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: 2ACEB-METAR1 or Contains FCC ID: 2ACEB-METAR1. Any similar wording that expresses the same meaning may be used. 10.3 IC Statements This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:
1. This device may not cause interference, and 2. This device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes:
1. L'appareil ne doit pas produire de brouillage, et 2. L'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. IMPORTANT! Tous les changements ou modifications pas expressment approuvs par la partie responsable de la conformit ont pu vider l'autorit de l'utilisateur pour actioner cet quipment. 10.4 IC Labeling Requirements Labeling requirements for Industry Canada are similar to those required by the FCC. A clearly visible label on the outside of a non-removable part of the final product must include the following text: "Contains IC: 12118A-METAR1". Les exigences d'tiquetage pour l'Industrie Canada sont semblables ceux exigs par la FCC. Une tiquette bien visible l'extrieur d'une partie non amovible du produit doit inclure le texte suivant: "Contains IC: 12118A-METAR1". 11 Information to the User 11.1 FCC Part 15.21 Page13 Change or Modifications that are not expressly approved by the manufacturer could void the user's authority to operate the equipment. MetaWear Preliminary Product Specification Page14