Scavenger Transmitter Module STM 31x / STM 31xC
Contents
1. USER MANUAL Green Smart Wireless enocean December 10 2012 Observe precautions Electrostatic sensitive devices Patent protected WO98 36395 DE 100 25 561 DE 101 50 128 WO 2004 051591 DE 103 01 678 A1 DE 10309334 WO 04 109236 WO 05 096482 WO 02 095707 US 6 747 573 US 7 019 241 EnOcean GmbH Phone 49 89 67 34 689 0 Subject to modifications Kolpingring 18a Fax 49 89 67 34 689 50 STM 31x STM 31xC User Manual V1 04 82041 Oberhaching info enocean com December 10 2012 4 19 PM Germany www enocean com Page 1 33 gt USER MANUAL V1 04 Green Smart Wireless enocean SIE SIS Xe REVISION HISTORY The following major modifications and improvements have been made to the first version of this document No Major Changes 0 5 Initial version 0 90 New drawings added Agency approvals added new charging circuitry added edi torial changes 0 91 Chapter 3 3 added 0 95 Parameters of A D converter corrected and specified in more detail charging cir cuitry modified editorial changes 0 99 Pin for connection of backup battery changed ICHAR modified in 2 4 and s 5 sec tion 3 4 inserted update of drawings 1 00 Editorial changes 1 01 Block diagram and pin description modified Application note for analog measure ment added Configuration options modified 1 02 Remark added in 3 5 additional remarks in 2 11 Label information modified in chapter 5 Figure corrected in 3 1 Circuit diagram2. Contains IC 5713A STM311C m The OEM must sign the OEM Limited Modular Approval Agreement with EnOcean 6 Label Information Product Revision Date Code variant xK em ww YY 2 FCC ID SZU STM310 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 32 33 USER MANUAL Green Smart Wireless enocean 7 Circuit diagram The figure below depicts a simplified circuit diagram of STM 31x C1 long term storage Goldcap 100M PASGTAL VL3 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 33 33
3. 93 r h non condensing The module shall not be placed on conductive materials to prevent discharge of the internal energy storages Even materials such as conductive foam ESD pro tection may have negative impact 2 5 Ordering Information Type Ordering Code Frequency STM 310 S3001 D310 868 3 MHz STM 311 S3001 D311 868 3 MHz STM 312 S3001 D312 868 3 MHz STM 310C s3031 D310 315 0 MHz STM 311C S3031 D311 315 0 MHz STM 312C S3031 D312 315 0 MHz Recommended for maximum life of energy storage capacitor Deep discharge of the PAS614L energy storage leads to degradation of performance Therefore products have to be taken into operation after 36 months At least the PAS614L needs to be recharged to 2 1 V 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 7 33 gt USER MANUAL Green Smart Wireless enocean 3 FUNCTIONAL DESCRIPTION 3 1 Simplified firmware flow chart and block diagram Significant Teach In change Retransmission No No Yes 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 8 33 USER MANUAL Green Smart Wireless enocean T Whip or VCHAR VDD helical antenna v v Transmit Indicator UVDDext 4 DI 0 WAKEO DI 1 LRN DI 2 LRN button SWPWR AD O0 AD 1 AD 2 REFN RESET REFP 3 2 Pin out UVDDext 1 WAKEO WAKE1 3 VGC GND 5 VCHAR PROG EN 7 SWPWR ADIOO 9 ADIO3
4. False ceilings with panels of metal or carbon fiber Lead glass or glass with metal coating steel furniture The distance between EnOcean receivers and other transmitting devices such as comput ers audio and video equipment that also emit high frequency signals should be at least 0 5 m A summarized application note to determine the transmission range within buildings is available as download from www enocean com 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 28 33 gt USER MANUAL V1 04 Green Smart Wireless enocean STM S1X 7 SIM 3LUXC 5 AGENCY CERTIFICATIONS The modules have been tested to fulfil the approval requirements for CE STM 31x and FCC IC STM 31xC based on the built in firmware When developing customer specific firmware based on the API for this module special care must be taken not to exceed the specified regulatory limits e g the duty cycle limitations 5 1 CE Approval The STM 31x module bears the EC conformity marking CE and conforms to the R amp TTE EU directive on radio equipment The assembly conforms to the European and national re quirements of electromagnetic compatibility The conformity has been proven and the ac cording documentation has been deposited at EnOcean The modules can be operated with out notification and free of charge in the area of the European Union and in Switzerland ACC EnOcean RF modules must not be modified or used outside their
5. The encoding input pins have to be left open or connected to GND in correspondence with the following connection schemes These settings are checked at every wake up CONF_O CONF_1 Wake up Number of wake ups that cycle time trigger a redundant retransmission NC NC 100 s 20 Every 7 14 timer wake up signal affected at random NC GND 10 s 20 Every 70 140 timer wake up signal affected at random GND NC 100 s 20 Every timer wake up signal GND GND No cyclic wake up No redundant retransmission gt D A radio telegram is always transmitted after wake up via WAKE pins After transmission the counter is reset to a random value within the specified in terval According to FCC 15 231a a redundant retransmission at every timer wake up to determine the system integrity is only allowed in safety and security applications In this case the total transmission time must not exceed two seconds per hour which means that a combination with a 1 s wake up cycle time is not allowed If applied in other non safety non security applications a minimum of 10 s be tween periodic transmissions is required In addition the device has to comply with the lower field strength limits of 15 231e The limited modular approval of STM 31xC is not valid in this case 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 16 33 SIVE XV SII PX 3 7 2 Configuration via serial interface USER MANU
6. The module provides a user configurable cyclic wake up After wake up the external sensors are supplied and after a configurable delay default 2 ms the internal microcontroller reads the status of the con nected sensors A radio telegram will be transmitted in case of a change of any digital input value compared to the last sending or in case of a significant change of measured analogue values In case of no relevant input change a redundant retransmission signal is sent after a user configurable number of wake ups to announce all current values In addition to the cyclic wake up a wake up can be triggered externally using a wake input or the internal LRN button Features with built in firmware Pre installed solar cell except STM 312 STM 312C On board energy storage and charging circuit On board LRN button On board TX indicator LED 20 pin connector for external sensors 3 A D converter inputs 3 digital inputs Configurable wake up and transmission cycle Wake up via Wake pins or LRN button 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 4 33 USER MANUAL Product variants m STM 310 310C Variant including solar cell and whip antenna m STM 311 311C Variant including solar cell and helical antenna m STM 312 312C Variant including whip antenna but no pre installed solar cell Features accessible via API Green Smart Wireless enocean Using the Dolphin API library it is possible to writ
7. INL E DNL 0 5 LSB Offset Error Describes the offset between the minimal possible code and code 0x00 EE Gain Error Describes the offset between maximum possible code and full Gain Error scale e g Ox3FF for 10bit measurements Integral Non Linearity INL Describes the difference between the ideal characteristics and the real characteristics Only values between minimum and maximum possible code are considered excluding offset error and gain error Differential Non Linearity DNL Measures the maximum deviation from the ideal step size of 1 LSB least significant bit Effective resolution Results from the signal noise ratio of the ADC and is given in Bit The number describes how many bits can be measured stable The criterion selected here is that the noise of DNL is lt 0 5 LSB Measurement Bandwidth The measurement bandwitdh is internally limited by filters A quasi static signal must be applied as long as the filter needs to 0 settle SettlingTime 1 MeasurementBandwidth In 2 resolution Bit Unyoo Codeanc Offset Error 7 3 dB input bandwidth resulting in 111 us settling time to achieve a deviation of an input signal lt 1 LSB lt 0 098 10 bit resolution 8 At 25 C At 25 C 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 13 33 USER MANUAL V1 04 SIE SIS Xe Green Smart Wireless enocean Parameter Conditions N
8. added in 6 Shelf life added in 1 4 supply voltage for programming added in 2 2 Conducted output power re placed by radiated output power in 1 2 programming interface added in 2 3 3 other editorial changes 1 03 Specification of shelf life improved figure added in 3 3 1 Chapter Related Docu ments added 1 04 STM 330 description page 4 changed to STM 31x Published by EnOcean GmbH Kolpingring 18a 82041 Oberhaching Germany www enocean com info enocean com phone 49 89 6734 6890 EnOcean GmbH All Rights Reserved Important This information describes the type of component and shall not be considered as assured characteris tics No responsibility is assumed for possible omissions or inaccuracies Circuitry and specifications are subject to change without notice For the latest product specifications refer to the EnOcean web site http www enocean com As far as patents or other rights of third parties are concerned liability is only assumed for modules not for the described applications processes and circuits EnOcean does not assume responsibility for use of modules described and limits its liability to the replacement of modules determined to be defective due to workmanship Devices or systems contain ing RF components must meet the essential requirements of the local legal authorities The modules must not be used in any relation with equipment that supports directly or in
9. communication with other circuitry therefore a voltage of 1 8 V has to be used While the module is in deep sleep mode the microcontroller with all its peripherals is switched off and DVDD IOVDD and SWPWR are not supplied If DVDD 0 V and IOVDD is not supplied e g while in sleep mode do not apply voltage to ADIOO to ADIO7 and the pins of the serial interface SCSEDIOO SCLKDIO1 WSDADIO2 RSDADIO3 This may lead to unpredictable malfunction of the device For I O pins configured as analog pins the IOVDD voltage level is not relevant See also 3 3 2 IOVDD BszsUW gt Pb gt gt gt gt gt gt gt YR OOEEU ET ees Pyamoooooooo Oe M O Qu EN o Ed NER O C 00 Soars 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 12 33 gt USER MANUAL V1 04 Green Smart Wireless enocean SIS XV SIS Xe 3 3 2 Analog and digital inputs Parameter Conditions Notes Min Typ Max Units Analog Input Mode with external circuitry as described in 4 2 Measurement range Single ended REFN REFP Input coupling DC Measurement bandwidth 62 5 kHz Single ended against 10 MO Input impedance GND Q 1 kHz Single ended against 10 pF Input capacitance GND 1 kHz Effective measurement resolution 10 Bit 10bit measurement Offset error 0 LSB Gain error 0 LSB 0 0 LSB INL 158 30 E DNL 0 5 LSB 8bit measurement Offset error 0 LSB Gain error 0 LSB 0 LSB
10. pin change No Every change of a wake pin triggers a wake up causing a telegram trans For both wake pins it can be configured individ mission ually if a telegram shall be sent on rising falling or both edges Manufacturer ID and EEP No Information about manufacturer and type of EnOcean Equipment Profile device This feature is needed for automatic interoperability of sensors and actuators or bus systems Unique manufacturer IDs are distrib uted by the EnOcean Alliance The interface is shown in the figure below Dolphin Studio or EOP 2012 EnOcean www enocean com USB SPI interface GND VDD Reset PROG EN ADIO7 SCSEDIOO SCLKDIO1 WSDADIO2 RSDADIO3 STM 31x STM 31xC User Manual V1 04 Page 17 33 gt USER MANUAL V1 04 Green Smart Wireless enocean SIVE XV SII PX EnOcean provides EOPx EnOcean Programmer a command line program and Dolphin Studio Windows application for chip configuration programming and testing and the USB SPI programmer device as part of the EDK 300 developer s kit 3 8 Radio telegram 3 8 1 Normal operation Telegram content seen at serial interface of RCM 130 TCM 3x0 or at DOLPHIN API ORG 0x07 Telegram type 4BS Data Byte1 3 3x8bit mode DATA BYTE3 Value of AD 2 analog input DATA BYTE2 Value of AD 1 analog input DATA BYTE1 Value of AD 0 analog input 1x8bit 1x6it 1x10bit mode DATA BYTE3 Value of AD 2
11. specifica tion limits EnOcean RF modules may only be used to transfer digital or digitized data Analog speech and or music are not permitted EnOcean RF modules must not be used with gain antennas since this may result in allowed ERP or spurious emission levels being exceeded The final product incorporating EnOcean RF modules must itself meet the essential requirement of the R amp TTE Directive and a CE marking must be af fixed on the final product and on the sales packaging each Operating in structions containing a Declaration of Conformity has to be attached If the STM 31x transmitter is used according to the regulations of the 868 3 MHz band a so called Duty Cycle of 1 per hour must not be exceeded Permanent transmitters such as radio earphones are not allowed The module must be used with only the following approved antenna s Model Type STM 310 Pre installed Wire Monopole STM 312 STM 311 Pre installed helical antenna 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 29 33 gt USER MANUAL V1 04 Green Smart Wireless enocean STM S1X 7 SIM 3LUXC 5 2 FCC United States certification STM 31xC LIMITED MODULAR APPROVAL This is an RF module approved for Limited Modular use operating as an intentional trans mitting device with respect to 47 CFR 15 231 a c and is limited to OEM installation The module is optimized to operate using small amounts of harvested energy su
12. the receiver and the transmitter type of terrain and degree of obstruction of the link path sources of interference affecting the receiver and Dead spots caused by signal reflections from nearby conductive objects Since the expected transmission range strongly depends on this system conditions range tests should categorically be performed before notification of a particular range that will be attainable by a certain application The following figures for expected transmission range are considered by using a PTM a STM or a TCM radio transmitter device and the TCM radio receiver device with preinstalled whip antenna and may be used as a rough guide only Line of sight connections Typically 30 m range in corridors up to 100 m in halls Plasterboard walls dry wood Typically 30 m range through max 5 walls Ferroconcrete walls ceilings Typically 10 m range through max 1 ceiling Fire safety walls elevator shafts staircases and supply areas should be considered as screening The angle at which the transmitted signal hits the wall is very important The effective wall thickness and with it the signal attenuation varies according to this angle Signals should be transmitted as directly as possible through the wall Wall niches should be avoid ed Other factors restricting transmission range Switch mounted on metal surfaces up to 30 loss of transmission range Hollow lightweight walls filled with insulating wool on metal foil
13. 31xC User Manual V1 04 Page 23 33 USER MANUAL 4 3 Antenna options Green Smart Wireless enocean 4 3 1 Whip antenna STM 310 STM 310C STM 312 STM 312C 80 8 tinned Tas a bared twisted and tinned Cu wire LiY according to VDE 0812 or 0245 CI 5 or CI 6 Insulation PVC mixture TI2 according to VDE 0207 4 orange Specification of the whip antenna L 150 mm 315 MHz L 86 mm 868 MHz Antenna layout recommendation STM 31x without host PCB 868MHz 1cm 315MHz 2cm Glass wood concrete metal 868MHz 2cm 315MHz 4cm 2012 EnOcean www enocean com STM 31x with host PCB 868MHz 2cm 315MHz 4cm Host PCB GND plane STM 31x STM 31xC User Manual V1 04 Page 24 33 USER MANUAL Green Smart Wireless enocean 4 3 2 Helical antenna STM 311 STM 311C 868 MHz 31 9541 Antenna recommendation STM 31x without host PCB STM 31x with host PCB 868MHz gt 5mm 315MHz gt 10mm 868MHz gt 2mm 315MHz gt 4mm Ze Host PCB GND plane 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 25 33 USER MANUAL Green Smart Wireless enocean 4 4 Mounting ECT 310 or a battery STM 312 STM 312C only STM 312 provides solder pads for ECT 310 or for a battery holder for CR16xx batteries ECT 310 is a low cost ultra low voltage DC DC co
14. ADIO1 11 ADIO4 166006600607 Drama ADIO2 13 ADIO6 PIII RESET 15 ADIO7 RSDADIO3 17 SCLKDIO1 WSDADIO2 19 SCSEDIOO The figure above shows the pin out of the STM 31x hardware The pins are named accord ing to the naming of the EO3000I chip to simplify usage of the DOLPHIN API The table in section 3 3 shows the translation of hardware pins to a naming that fits the functionality of the built in firmware 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 9 33 gt USER MANUAL V1 04 Green Smart Wireless enocean SIE SIS Xe 3 3 Pin description and operational characteristics STM 31x STM 31x Function Characteristics Hardware Firmware Symbol Symbol GND GND X jGroumdconncton 1 1 1 1 VDD VDD Supply voltage 2 1 V 5 0 V Start up voltage 2 6 V Maximum ripple see 3 6 Not available at pin header Connection of external 3 V battery possi ble See 4 4 Supply for pro Recommended supply voltage for gramming I F programming 3 V VCHAR VCHAR Input for an external energy harvester for use in STM 312 or a battery See 3 10 Supply for pro Recommended supply voltage for gramming I F if programming 3 3 V 3 6V VDD cannot be used VGC VGC Voltage Gold Cap Connection of additional external energy storage See 3 10 SWPWR DVDD supply volt 1 8 V Output current max 5 mA 2 switched age regulator out Supply for external circuitry available DVDD of put switched via while no
15. AL V1 04 Green Smart Wireless enocean Via the programming interface the configuration area can be modified This provides a lot more configuration options Values set via serial interface override hardware settings These settings are read after RESET or power on reset only and not at every wake up of the module Parameter Configuration Configuration via serial interface Wake up cycle via pins See section 3 7 1 Value can be set from 1 s to 65534 s Redundant Retransmission cycle See section 3 7 1 Min Max values for random interval If Min Max gt random switched off Threshold values for No The default values are 5 LSB at AD_1 input 6 analog inputs LSB at AD O and 14 LSB at AD 2 transmission of telegram if The threshold value can be set between 0 and threshold value exceeded full scale for every input individually Resolution of the analog No Default AD 0 8 bit AD 1 8 bit AD 2 8 bit inputs Option AD 0 10 bit AD 1 6 bit AD 2 8 bit Input mask No A digital input mask for ignoring changes on digital input pins At default all input bits are checked Delay time between SWPWR No Value can be set from 0 ms to 508 ms in steps on and sampling moment of 2 ms Default delay time is 2 ms for stabilization of external sensor measurement values Source of AD 2 No Select if AD 2 contains measurement value of external ADIO2 pin or from internal VDD 4 Edge of wake
16. AUT ALLE RECHTE VORBEHALTEN POPRIETARY DATA COMPANY CONFIDENTIAL ALL RIGHTS RESERVED tolerance for hole pitch 2 4 Toleranz f r Ritzkonte 43 tolerance for score edge 43 5 Toleranz f r Bohrungsabstand tolerance for hole pitch restliche Bouteileh he max 1 5mm remaining component height mox b Fr skonte P milled edge 929 RR x e IXXXXXXXXXXXXXXXX 9 XOOOOOOUO bcs Kd bsd Ke KX ART SKS 9 x 929 9 994 SL ILILILILIL SLIL SOSH o x 929 SOS Solarzelle solar cell 9 M x fe Q Fr skante milled edge e 22 940 3 xx x x x x RS x STELL SR 674747474 REPRE KERR KS PORES EEE EEE PSPS BERRY CX PRODDED SPR RWS PIR Ritzkante score edge 12 810 2 Sperrfl che f r Bauteile Bauteile k nnen bis an Sperfl chen angrenzen blocked surface for components components can boarder on blocked surfaces Leiterplatte STMHW310C PC board STMHW310C 0 Original _ Zeichnung nicht vn Hind ndern STM 31x STM 31xC User Manual V1 04 Page 6 33 2012 EnOcean www enocean com USER MANUAL V1 04 SIE SIS Xe Green Smart Wireless enocean 2 4 Environmental conditions Operating temperature Storage temperature Shelf life in absolute darkness Humidity 20 C 60 C 20 C 60 C recommended 10 C 30 C lt 60 r h 36 months after delivery 0
17. DATA BYTE2 Upper 2 bits of AD 0 and value of AD 1 DATA BYTE1 Lower 8 bits Value of AD 0 analog input DATA BYTE3 DATA BYTE2 DATA BYTE1 AD 2 AD 1 AD 0 7161 5 14 3 2 Jo 5 14 3 2 J Jo 9 18 7 6 5 4 3 2 1 0 DATA_BYTEO Digital sensor inputs as follows Bit 7 Bit 0 Reserved set to 0 1 DI_2 DI_1 DI_O ID_BYTE3 module identifier Byte3 ID_BYTE2 module identifier Byte2 ID BYTE1 module identifier Byte1 ID BYTEO module identifier ByteO The voltages measured at the analog inputs can be calculated from these values as follows U Value of AD x 2 7 x1 8 V n resolution of channel in bit Please note the limitations in the measurement range of the A D converter as shown in 3 3 2 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 18 33 Green Smart Wireless enocean USER MANUAL V1 04 SIE SIS Xe 3 8 2 Teach in telegram In case of a wake up via WAKE1 pin LRN input the module transmits a teach in telegram m If the manufacturer code is not set the module transmits a normal telegram according to 3 8 1 with the difference that DI 3 20 If a manufacturer code is set this teach in telegram contains special information as described below With this special teach in telegram it is possible to identify the manufacturer of a device and the function and type of a dev
18. ER MANUAL Green Smart Wireless enocean 3 10 Charging circuitry The figure below shows the internal charging circuit It is controlled via the WXODIO pin of EO3000I which switches according to the status of the internal threshold detector For de tails please refer to our Dolphin Core Description documentation The WXIDIO pin is used to disconnect the energy storage element at voltages below VOFF to avoid deep discharge D2A vob VCHAR A E1 BASZOTW D2B p2c nb 2 1 V SOLAR N 470uF Solar cell as a primary energy source MA GND v 2 E 8 RS Ps WXODIO BAST0 04 TE 22 100M aow 23 i k R10 vec 100M 100M 100K T3B BC847B GND GND GND C1 R15 100M 250mF PAS614L VL3 C1 long term storage Goldcap ND ND WXIDIO discharge protection 100M An external 3 V backup battery can be connected at VDD STM 312 only see 4 4 or at VCHAR 3 11 Energy consumption Current mA 0 001 0 0001 0 00001 0 10 20 30 40 50 60 70 80 90 100 Time ms Current Consumption of STM 31x Charge needed for one measurement and transmit cycle 130 uC Charge needed for one measurement cycle without transmit 30 uC current for external sensor circuits lt 1 mA Calculations are performed on the basis of electric charges because of the internal linear voltage regulator of the module Energy consumption varies with voltage of the energy
19. arameter Min Max Units VDD Supply voltage at VDD and VDDLIM 2 1 5 0 V VGC Voltage gold cap LS 3 3 V VCHAR Supply voltage from external energy harvester 0 6 V Supply current from external energy harvester ICHAR VCHAR lt 4 V Limited internally 4 V VCHAR 6 V 45 mA GND Ground connection 0 0 V VINA Voltage at every analog input pin 0 2 0 V VIND Voltage at RESET WAKEO 1 and every digital input 0 3 6 V 3 6 Power management and voltage regulators Symbol Parameter Conditions Notes Min Typ Max Units Voltage Regulators Ripple on VDD where 50 MVpp uon Min VDD VON UVDD Ultra Low Power supply 1 8 V RVDD RF supply Internal signal only 1 7 1 8 1 9 V DVDD Digital supply Internal signal only iaz 1 8 1 9 V Threshold Detector VON Turn on threshold 2 3 2 45 2 6 V Automatic shutdown if 1 85 1 9 2 1 V VOFF Turn off threshold Db STIS Ba a Were 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 15 33 gt USER MANUAL V1 04 Green Smart Wireless enocean SIE SIS Xe Threshold detector STM 31x provides an internal ultra low power ON OFF threshold detector If VDD VON it turns on the ultra low power regulator UVDD the watchdog timer and the WAKE pins circuitry If VDD lt VOFF it initiates the automatic shut down of STM 31x For details of this mechanism please refer to the Dolphin Core Description documentation 3 7 Configuration 3 7 1 Configuration via pins
20. ch as can be collected by a small solar cell exposed to ambient light The module transmits short radio packets comprised of control signals in some cases the control signal may be accompa nied with data such as those used with alarm systems door openers remote switches and the like The module does not support continuous streaming of voice video or any other forms of streaming data it sends only short packets containing control signals and possibly data and is typically powered by a solar cell in ambient light The module is de signed to comply with has been tested according to 15 231 a c and has been found to comply with each requirement Thus a finished device containing the STM 31xC radio module can be operated in the United States without additional Part 15 FCC approval ap proval s for unintentional radiators may be required for the OEM s finished product under EnOcean s FCC ID number This greatly simplifies and shortens the design cycle and devel opment costs for OEM integrators The module can be triggered manually or automatically which cases are described below Manual Activation The radio module can be configured to transmit a short packetized control signal if triggered manually The module can be triggered by pressing a switch for example The packet contains one or more control signals that is are intended to control something at the receiving end The packet may also contain data Depending on how much energy i
21. directly human health or life or with applications that can result in danger for people animals or real value Components of the modules are considered and should be disposed of as hazardous waste Local government regulations are to be observed Packing Please use the recycling operators known to you 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 2 33 gt USER MANUAL V1 04 Green Smart Wireless enocean STM S1X 7 SIM 3LUXC TABLE OF CONTENT 1 RELATED DOCUMENTS nee 4 2 GENERAL DESCRIPTION a0 Sa ee 4 2 1 Basic functionality ss tn en a RO CR HER 4 2 2 Technical detained o Rie oc d e Ye e o o oa C E Rn 5 2 3 Physical dimensions 0 NU UE EU EIU nennen senes sean 5 2 4 Environmental conditions ssiri a ae E A E sea sea sea sen nn nnn 7 2 5 Ordering Information cc cceee ani raK ee menie enne 7 3 FUNCTIONAL DESCRIPTION 2 2 5 ee een 8 3 1 Simplified firmware flow chart and block diagram ssseeseseeeeeeneee 8 3 2 PIN OUf entire ta ehieaaae eh 9 3 3 Pin description and operational characteriStiCS ssrsrrrrrrrrrrrnrnrnrnrnrnnnnnn 10 3 3 1 GPIO supply voltage une etes ao nn 12 3 3 2 Analog and digital inputs cece eee eee nenne nenne nenne nn nenn nenn nenn nennen 13 3 3 3 Programming Interface 14 3 4 Absolute maximum ratings non operating cesses mnm 15 3 5 Maximum ratings operating uzernensennennennen nennen en en nemen me
22. dule must not have the ability to alter the firmware that governs the operation of the module The agency grant is valid only when the module is incorporated into a final product by OEM integrators m The end user must not be provided with instructions to remove adjust or install the module m The Original Equipment Manufacturer OEM must ensure that FCC labeling requirements are met This includes a clearly visible label on the outside of the final product Attaching a label to a removable portion of the final product such as a battery cover is not per mitted The label must include the following text STM 310C STM 312C Contains FCC ID SZV STM310C The enclosed device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions i this device may not cause harmful interference and ii this device must accept any interference received including interference that may cause undesired operation STM 311C Contains FCC ID SZV STM311C The enclosed device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions i this device may not cause harmful interference and ii this device must accept any interference received including interference that may cause undesired operation When the device is so small or for such use that it is not practicable to place the state ment above on it the information required by this paragraph shall be placed in a promi nent l
23. e custom firmware for the module The API provides Integrated 16 MHz 8051 CPU with 32 kB FLASH and 2 kB SRAM Various power down and sleep modes down to typ 0 2 pA current consumption E m Up to 13 configurable I Os m 10 bit ADC 8 bit DAC 2 2 Technical data Antenna Frequency Radio Standard Data rate Modulation type Conducted Output Power Power Supply VDD Initial operation time in darkness 25 C Operation start up time with empty energy store Input Channels Connector Radio Regulations 2 3 Physical dimensions PCB dimensions whip or helical antenna installed 315 0 MHz STM 31xC 868 3 MHz STM 31x EnOcean 868 MHz 315 MHz 125 kbps ASK STM 310 STM 312 8 dBm EIRP 2 5 dB STM 310C STM 312C 92 dBuV m 2 dB STM 311 5 dBm EIRP 2 5 dB STM 311C 92 dBuV m 2 dB Pre installed solar cell except STM 312 STM 312C Illumination 50 100000 lux 2 1 V 5 0 V 2 6 V needed for start up typ 4 days min 60 hours if energy storage fully charged wake up every 100 s transmission of telegram every 1000 s on average typ 2 5 min 400 lux 25 C incandescent or fluorescent light 3x digital input 2x WAKE input 3x analog input 2x analog reference input Resolution 3x 8 bit or 1x 10 bit 1x 8 bit 1x 6 bit 20 pins grid 1 27 mm L1 0 4 mm R amp TTE EN 300 220 STM 31x FCC CFR 47 Part 15 STM 31xC 4350 2 x 1650 3 x 140 1 mm Module height Weigh
24. ennen nnn 32 6 Label Information er 32 7 Circ it dia M eei ixa ceti r xh a sth geese EY TEAPARR KD AY KERKRRRRXXKELOK EF EKDARRTERRIKAKKKRRPNERA 33 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 3 33 USER MANUAL Green Smart Wireless enocean 1 RELATED DOCUMENTS This document describes operation of STM 31x 31xC modules with their built in firmware If you want to write own firmware running on the integrated micro controller or need more detailed information on the Dolphin core please also refer to Dolphin Core Description Dolphin API Documentation For mechanical integration please refer to our 3D drawings found at http www enocean com en enocean modules stm 310 In addition we recommend following our application notes in particular AN102 Antenna Basics Basic Antenna Design Considerations for EnOcean based Products AN314 Rail to Rail Sensor Applications using the STM 31x 2 GENERAL DESCRIPTION 2 1 Basic functionality The extremely power saving RF transmitter module STM 31x of EnOcean enables the realization of a wide range of wireless and maintenance free sen sors such as temperature sensors humidity sen sors Or room operating panels Power supply is provided by a small solar cell an external energy harvester or an external 3 V back up battery An energy storage element is installed to bridge periods with no supply from the energy harvester
25. ice There is a list available from the EnOcean Alliance describing the functionalities of the respective products RORG 0xA5 Telegram type ABS DATA BYTEO 3 see below LRN Type 1 LRN 0 DIO DI2 current status of digital inputs Profile Type Manufacturer ID defined by manufacturer REO 2 set to 0 ID_BYTE3 module identifier Byte3 ID_BYTE2 module identifier Byte2 ID BYTE1 module identifier Byte1 ID BYTEO module identifier ByteO RORG Data_Byte3 Data Byte2 Data_Bytel Data ByteO ID acm Function Type Manufacturer LRN Type RE2 RE1 REO LRN DI2 DI1 DIO 6 Bit 7 Bit ID 11 Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 3 9 Transmit timing The setup of the transmission timing allows avoiding possible collisions with data packages of other EnOcean transmitters as well as disturbances from the environment With each transmission cycle 3 identical subtelegrams are transmitted within 40 ms The transmis sion of a subtelegram lasts approximately 1 2 ms The delay between the three transmis sion bursts is affected at random If a new wake up occurs before all sub telegrams have been sent the series of transmissions is stopped and a new series of telegrams with new valid measure ment values is transmitted 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 19 33 US
26. ion 8 bit See 3 7 2 ADIO3 REFN Negative reference Input is read 2 ms after wake up and is input interpreted as negative voltage reference See 4 2 ADIO4 REFP Positive reference Input is read 2 ms after wake up and is input interpreted as positive voltage reference See 4 2 See 3 7 2 Internal pull up moo mewammnoyF Leave open SCSEDIOO Digital input Input read 2 ms after wake up See 3 7 2 Internal pull up Programming vr SCLKDIO1 DI 1 Digital input Input read 2 ms after wake up See 3 7 2 Internal pull up Programming EL WSDADIO2 CONF_1 Encoding input Configuration interface Leave open or connect to GND See 3 7 1 Internal pull up SE Programming I F RSDADIO3 CONF O Encoding input Configuration interface Leave open or connect to GND See 3 7 1 Internal pull up Programming FT WAKEO WAKEO Wake input Change of logic state leads to wake up and transmission of a telegram Must be connected to UVDDext or GND At time of delivery WAKEO is connected to UVDDext via a jumper at the connector See also 4 1 WAKE1 LRN LRN input Change of logic state to LOW leads to wake up and transmission of teach in tele gram Internal pull up to UVDD See also 3 7 2 3 8 2 and 4 1 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 11 33 USER MANUAL Green Smart Wireless enocean 3 3 1 GPIO supply voltage The IOVDD pin of EO30001 is internally connected to DVDD For digital
27. mes nnn nnn 15 3 6 Power management and voltage regulators sssssssssseesenenene 15 3 7 Configuration T 16 3 7 1 Configuration via PINS neun ae ana een ne en 16 3 7 2 Configuration via serial interface zus sasnernnnennn nenne nennen nennen nn nenn nennen 17 3 8 Radio telegram nenn a ia ha ten rn 18 3 8 1 Normal peration a assennea neh 18 3 8 2 Teach intelegram sans net a a I b rre daa ia dea 19 3 9 T kansmit MING see ex a a enge 19 3 10 Charging CIL CUILEy iis crecer a ea nn ner 20 3 11 Energy CONSUMPTION en renee c a die va uva eatin 20 4 APPLICATIONS INFORMATION uasserersenennnnennnnnnnnnnnnn nun nenn nenn nennen nenne nennen 22 4 1 Using the WAKE Pins anne aan 22 4 2 Analog measuremient iicet en nn an 23 4 3 Antenna Options er ee tex Ver or pce ce ior nee ee 24 4 3 1 Whip antenna STM 310 STM 310C STM 312 STM 312C eee 24 4 3 2 Helical antenna STM 311 STM 311C ersersenseneenenn en enn nun nun nun nun nun nennen nenn 25 4 4 Mounting ECT 310 or a battery STM 312 STM 312C only eene 26 4 5 Mounting STM 31x into a housing zerserernnnennnnennnnennn eee eee eee eee 27 4 6 Transmission range un ee re ea Erb ee 28 5 AGENCY CERTIFICATIONS sun ee ne tate anne 29 571 CE APPrOVAl an re ee 29 5 2 FCC United States certification cece cece en kaa ENAR NENEA nennen nennen nenn 30 5 3 IC Industry Canada Certification cece n
28. nverter for powering battery less EnOcean radio modules by thermal energy Operation starts at typ 20 mV relating to a 2 K tempera ture difference at a standard low cost Peltier element ECT 310 can be mounted as shown in this figure Pads for battery holder If a battery is mounted here it is not allowed to connect an energy harvester via VCHAR Otherwise the battery would be charged See circuitry in 3 10 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 26 33 USER MANUAL Green Smart Wireless enocearn 4 5 Mounting STM 31x into a housing The figure below shows an example of a housing in which the module can be mounted with antenna pointing to the left Design data of the housing and the modules is available in igs format Please make sure not to exert shear force side force within the plane of the solar cell onto the solar cell The maximum vertical force onto the solar cell must not exceed 4 N and should be homogeneously distributed Bending of the PCB must be avoided Please make sure that the housing covers 0 5 mm at the solar cell edges Within 0 5 mm off the edge flaking is possible due to the cutting process 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 27 33 USER MANUAL Green Smart Wireless enocean 4 6 Transmission range The main factors that influence the system transmission range are type and location of the antennas of
29. ocation in the instruction manual or pamphlet supplied to the user or alternative ly shall be placed on the container in which the device is marketed However the FCC identifier or the unique identifier as appropriate must be displayed on the device The user manual for the end product must also contain the text given above m Changes or modifications not expressly approved by EnOcean could void the user s au thority to operate the equipment The OEM must ensure that timing requirements according to 47 CFR 15 231 a c are met The OEM must sign the OEM Limited Modular Approval Agreement with EnOcean m The module must be used with only the following approved antenna s 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 31 33 USER MANUAL Green Smart Wireless enocean Model Type Gain STM 310C Pre installed Wire Monopole 1 0 dBi STM 312C STM 311C Pre installed helical antenna 9 dBi 5 3 IC Industry Canada certification In order to use EnOcean s IC number the OEM must ensure that the following conditions are met Labeling requirements for Industry Canada are similar to those required by the FCC The Original Equipment Manufacturer OEM must ensure that IC labeling requirements are met A clearly visible label on the outside of a non removable part of the final product must include the following text STM 310C STM 312C Contains IC 5713A STM310C STM 311C
30. otes Min Typ Max Units Digital Input Mode 2 3 V Input HIGH voltage IOVDD 1 3 V Input LOW voltage IOVDD Pull up resistor IOVDD 1 7 1 9 V 90 132 200 kQ 3 3 3 Programming Interface Symbol ADIO6 Only if in addition to programming I F a serial inter face is needed Top layer VDD The list above summarizes the pins needed for programming VDD is not available at the pin connector The position of the pad for VDD is shown in the figure above If VDD is not accessible e g because the module shall be programmed via the pin con nector please use VCHAR instead of VDD see 3 3 The positions of the pads needed for programming are available from EnOcean as Gerber files STM3XY C 05 GTL and STM3XY C _05 GKO 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 14 33 USER MANUAL V1 04 SIVE XV SII PX 3 4 Absolute maximum ratings non operating Green Smart Wireless enocean Symbol Parameter Min Max Units VDD Supply voltage at VDD 0 5 515 V VGC Voltage gold cap 1 5 3 3 V VCHAR Supply voltage from external energy harvester 6 V ICHAR Supply current from external energy harvester 45 mA GND Ground connection 0 V VINA Voltage at every analog input pin 0 5 2 V VIND Voltage at RESET WAKEO 1 and every digital input 0 5 3 6 V 3 5 Maximum ratings operating Symbol P
31. oved The circuitry on the host PCB then has to ensure that WAKEO is always in a defined position There are two ways to use WAKEO Connect WAKEO to UVDDext and connect an external button between WAKEO and GND As long as the button is pressed a current of 1 pA will flow Connect a 3 terminal switch and switch WAKEO to either GND or UVDDext In this case there is no continuous flow of current in either position of the switch 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 22 33 USER MANUAL Green Smart Wireless enocean If more digital inputs with WAKE functionality are needed in an application WAKEO can be combined with some of the digital inputs as shown below BUTTON1 a z oO BUTTON2 UVDDext a SCSEDIOO 2 STM31X SCLKDIO1 4 2 Analog measurement The EO3000I chip inside STM31x cannot measure rail to rail Therefore an adaptation of the external sensor circuit is required Two offset voltages REFN and REFP which are with in the measurement range of EO3000I have to be generated and buffered by voltage fol lowers as shown below The offset voltages are defined by a resistor divider Resistors with a tolerance of 196 or less are recommended The sensor circuit must be designed to output voltages between REFN 0 and REFP full scale ADIO3 STM 31X GND Example for connection of a sensor to ADIOO 2012 EnOcean www enocean com STM 31x STM
32. s available from the energy source subsequent manual triggers can initiate the transmission of additional control signals This may be necessary if prior packet s was were lost to fading or interference Subsequent triggers can al so be initiated as a precaution if any doubt exists that the first packet didn t arrive at the receiver Each packet that is transmitted regardless of whether it was the first one or a subsequent one will only be transmitted if enough energy is available from the energy source Automatic Activation The radio module also can be configured to transmit a short packetized control sig nal if triggered automatically by a relevant change of its inputs for example Again the packet contains a control signal that is intended to control something at the re ceiving end and may also contain data As above it is possible for the packet to get lost and never reach the receiver However if enough energy is available from the energy source and the module has been configured to do so then another packet or packets containing the control signal may be transmitted at a later unpredictable time 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 30 33 gt USER MANUAL V1 04 Green Smart Wireless enocean STM S1X 7 SIM 3LUXC OEM Requirements In order to use EnOcean s FCC ID number the OEM must ensure that the following condi tions are met m End users of products which contain the mo
33. storage while consumption of electric charge is constant 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 20 33 USER MANUAL V1 04 SIE SIS Xe Green Smart Wireless enocean From these values the following typical performance parameters at room temperature have been calculated Operation Time in darkness h when storage fully charged Wake cycle s Transmit interval Assumptions Required reload time h at 200 lux within 24 h for continuous operation storage too small storage too small storage too small storage too small 21 16 8 7 8 3 6 3 24 h operation after 6 h illumination at x lux storage too small storage too small storage too small storage too small storage too small storage too small 260 120 100 Illumina tion level in lux for continuous o peration Current in pA required for con tinuous o peration Internal storage PAS614L VL3 after several days of operation at good illumination level with 0 25 F Umax 3 2 V Umin 2 2 V T 25 C Consumption Transmit cycle 100 uC measurement cycle 30 uC including consumption of external sensor circuitry lt 1 mA Pre installed solar cell ECS 300 operating values 3 V and 5 pA 200 lux fluorescent light Current proportional to illumination level not true at very low levels These values are calculated the accuracy is about 20 The performance varies over tempera
34. t 8 mm 3 5 g STM 312 6 4 g STM 311C depending on variant Measured in test laboratory measurement uncertainty 2 7 dB Tolerance of measurement in production at 50 Q Full performance of the PAS614L energy storage is achieved after several days of opera tion up to two weeks at good illumination level Performance degrades over life time es pecially if energy storage is exposed to higher temperatures Each 10 K drop in tempera ture doubles the expected life span 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 5 33 Ri tzkante score edge 2 3 3 67 40 2 Wireless ER EI ORT 2 bes Ke bs USER MANUA Green Smart E e aD e O 36 02 0 4 Bautei leseite component side Versatz displocement Fr skante zu Bohrungen milled edge to holes 14 7340 4 Toleranz tolerance 10 2 Fr skante zu Leiterbild mi Ri led edge to conductive pattern zkante zu Bohrungen score edge to holes Bohrungen holes t 0 3 22 61 40 4 3 88 40 5 2 1 1 35 1 Leiterplatten Gesomtdicke mit Leiterbahnen und L tstoplack PC board total thickness with conductor paths and solder resist 2 Toleranz f r Fr skonte 1 tolerance for milled edge 1 6 6 3 Toleranz f r Bohrungsobstand Bohrungen zu Leiterbild holes to conductive pattern ALS BETRIEBSGEHE INNIS ANVERTR
35. t in deep sleep mode SWPWR is EO3000I transistor con switched on 2 ms default before sam trolled by EO3000I pling of inputs and is switched off after ADIOS pin wards The delay time can be configured see 3 7 2 needed for stabilization of sen UVDDext UVDDext Ultra low power Not for supply of external circuitry UVDD of supply voltage For use with WAKE pins only see section EO3000I regulator output 4 1 Limited to max 1 pA output current with 1 8 MQ by an internal 1 8 MQ resistor in series IOVDD not GPIO supply volt Internal connection to EO3000I DVDD available at age typ 1 8 V pin con See 3 3 1 nector RESET RESET Reset input Active high reset 1 8 V Programming I F Fixed internal 10 kQ pull down PROG EN PROG EN Programming I F HIGH programming mode active LOW operating mode Digital input fixed internal 10 kQ pull down 6 E g if module shall be programmed or configured via pin connector If a bed of nails fixture for programming is available VDD should be used instead of VCHAR 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 10 33 USER MANUAL V1 04 Green Smart Wireless enocean SIVE XV SII PX ADIOO AD O Analog input Input read 2 ms after wake up HN SELON Resolution 8 bit default or 10 bit See also 3 7 2 ADIO1 AD 1 Analog input Input read 2 ms after wake up um Lu RENE Resolution 8 bit default or 6 bit See 3 7 2 Resol 5 i i ii T Resolut
36. ture and may be strongly reduced at extreme temperatures or short transmit inter vals 2012 EnOcean www enocean com STM 31x STM 31xC User Manual V1 04 Page 21 33 gt USER MANUAL V1 04 Green Smart Wireless enocean STM 31X 7 SIMO3UXC 4 APPLICATIONS INFORMATION 4 1 Using the WAKE pins The logic input circuits of the WAKEO and WAKE1 pins are supplied by UVDD and therefore also usable in Deep Sleep Mode Due to current minimization there is no internal pull up or pull down at the WAKE pins When STM 31x is in Deep Sleep Mode and the logic levels of WAKEO and or WAKE1 is changed STM 31x starts up As the there is no internal pull up or pull down at the WAKEO pin it has to be en sured by external circuitry that the WAKEO pin is at a defined logic level at any time At time of delivery a jumper is connected between WAKEO and UVDDext WAKE1 provides an internal 1 8 MQ pull up See figure below EO3000I L 1 Jumper installed at time of delivery When the LRN button is pressed WAKE1 is pulled to GND and a teach in telegram is trans mitted As long as the button is pressed a small current of approximately 1 pA is flowing It is possible to connect an additional external button in parallel between WAKE1 and GND if a different position of the button in the device is required WAKEO is connected to UVDDext via a jumper at time of delivery If the module is mounted onto a host PCB the jumper has to be rem
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