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1. 0 0 V VINA Voltageateveryanaloginptpn 0 20 V VIND Voltage at RESET WAKEO 1 and every digital input 0 36 V 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 14 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 2 6 Power management and voltage regulators Symbol Parameter Conditions Notes Min Typ Max Units Voltage Regulators Ripple on VDD where 50 MVpp VDUR Min VDD gt VON UVDD _ Ultra Low Power supply o 1 1 18 V RVDD RF supply Internal signal only DVDD Digital supply Internal signal only Threshold Detector VON Tumonthrehod 23 245 26 V Automatic shutdown if 1 85 1 9 2 1 V 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 15 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearmn STM 31X STM 31XC 2 7 Configuration 2 7 1 Configurat2. 0 8 tinned bared twisted and tinned 1 330 1 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 868MHz 2cm 315MHz 4cm 2010 EnOcean www enocean com Downloaded from Elcodis com electronic components distributor STM 31x with host PCB 868MHz 2cm 315MHz 4cm STM 31x STM 31xC User Manual V1 01 Page 24 32 USER MANUAL Green Smart Wireless enocearr 3 3 2 Helical antenna STM 311 STM 311C 868 MHz 31 9541 Antenna recommendation STM 31x with host PCB STM 31x without host PCB n n 868MHz 5mm 315MHz 10mm Glass wood concrete metal V4 868MHz gt 2mm 315MHz gt 4mm SS AW nn Eu AN Y d N 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 25 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr 3 4 Mounting ECT 310 or a bat
3. dually if a telegram shall be sent on rising fall ing or both edges Source of AD_2 Edge of wake pin change causing a telegram trans mission Manufacturer ID and EEP 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 distri buted by the EnOcean Alliance The interface is shown in the figure below GND VDD Reset PROG EN USB lt gt SPI ADIO7 interface SCSEDIOO SCLKDIO1 WSDADIO2 RSDADIO3 Dolphin Studio or EOP 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 17 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC 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 2 8 Radio telegram 2 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 O0 analog input 1x8bit 1x6it 1x10bit mode DATA BYTE3 Value of AD 2 DATA BYTE2
4. varies according to this angle Signals should be transmitted as directly as possible through the wall Wall niches should be avoided Other factors restricting transmission range Switch mounted on metal surfaces up to 30 loss of transmission range s Hollow lightweight walls filled with insulating wool on metal foil m False ceilings with panels of metal or carbon fiber m 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 28 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 4 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 4 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
5. 4 days 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 R amp TTE EN 300 220 STM 31x FCC CFR 47 Part 15 STM 31xC 43 0 2 x 16 0 3 x 140 1 mm 8 mm 3 5 g STM 312 6 4 g STM 311C depending on variant Matched to impedance of whip antenna not 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 2010 EnOcean www enocean com Downloaded from Elcodis com electronic components distributor STM 31x STM 31xC User Manual V1 01 Page 5 32 c ZA lt gt c LLI uU Green Smart Wireless enocearr 42 7 Nb mre 42 2 RR r3 41 2 EEE K Wy Zg R Ki K 3 4 36 02 0 4 d Ki Ki Ki Ki ki Ki Ki Ki Ki Ki Ki Ki Ki ki k K d Ki d kj d L1 d K LC Bie 9 k Ki ki x Ld KI ki ik Ld K Ki LE d d kj 4 H Bauteileseite q Ki a component S de Ki ki Ki Ki Ki k ki Ki ki k Ki
6. 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 VDD VCHAR 5 A E1 BAS4OTW D2B D2C GND 1 V SOLAR B BAS4OTW BAS4OTW C6 Solar call as a primary energy source 470uF BAT1 IM IE GND GND 2 s 2 RO 1000C32M5T1G SII PI WXODIO BAS70 04 TIR E 100M 4 BSS84DW o 5 2a BASS16 is E 5 VGC RIO Ri C13 100M 100M 100K 100nF T3B BC847B GND GND GND GND R15 Ic 100M 250mF PAS614L VL3 WXIDIO R16 C1 long term storage Gokicap discharge protection An external 3 V backup battery can be connected at VDD STM 312 only see 3 4 or at VCHAR 2 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 not included 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 sto rage while consumption of electric charge is constant 201
7. A D converter inputs 3 digital inputs Configurable wake up and transmission cycle Wake up via Wake pins or LRN button 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 Using the Dolphin API library it is possible to write custom firmware for the module The API provides s Integrated 16 MHz 8051 CPU with 32 kB FLASH and 2 kB SRAM m Various power down and sleep modes down to typ 0 2 pA current consumption m Up to 13 configurable I Os m 10 bit ADC 8 bit DAC 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 4 32 Downloaded from Elcodis com electronic components distributor USER MANUAL 1 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 Radio Regulations 1 3 Physical dimensions PCB dimensions Module height Weight Green Smart Wireless enocearr whip or helical antenna installed 315 0 MHz STM 31xC 868 3 MHz STM 31x EnOcean 868 MHz 315 MHz 125 kbps ASK typ 2 dBm 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
8. OO RSS PSY XXX XXX XXXXXXX XX EEE OXKKKKKOD Cx Xj oS X SS CX gt SS SZ X SS ER o7 p IKK lt x OXK KK KK KK POO C XK KK KKK OX SRR RK 9 929 F7 O 2 gt i S VA Xx Q2 Xd 3 0 Ri tzkante score edge 12 8 40 2 PC board total thickness with conductor paths and solder resist 6 0 2 6 Toleranz f r Fr skante t t 0 2 1 tolerance for milled edge 1 Toleranz f r Bohrungsabstand tolerance for hole pitch 92 R d REEL Sperrfl che f r Bauteile Bauteile k nnen bis an Sperfl chen angrenzen blocked surface for components components can boarder on blocked surfaces www enocean com 2 5 0 0 Toleranz f r Ritzkante 43 0 3 tolerance for score edge 43 0 3 Massstab 5 1 Toleranz f r Bohrungsabstand 43 43 tolerance for hole pitch Leiterplatte STMHW310C PC board STMHW310C nOcean remaining component height max 1 Pe Lh C CD Original Zeichnung nicht vos Hand ndern Page t Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 1 4 Environmental conditions Operating temperature 20 C 60 C Storage temperature 20 C 60 C recommended 10 C 30 C lt 60 r h Humidity 0 93 r h non condensing 1 5 Ordering Information Type STM 310 STM 311 STM 312 STM 310C STM 311C STM 312C
9. Ordering Code Frequency Recommended for maximum life of energy storage capacitor 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 7 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr 2 FUNCTIONAL DESCRIPTION 2 1 Simplified firmware flow chart and block diagram Start Significant Teach In change Retransmission No No No Yos Yes Yes 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 8 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr Whip or VCHAR VDD helical antenna Je Transmit Indicator UVDDext DI O WAKEO DI 1 LRN DI 2 LRN button SWPWR AD O AD 1 AD 2 REFN RESET REFP Energy Storage VGC GND CONF O CONF 1 2 2 Pin out UVDDext 1 WAKEO WAKE1 3 VGC GND 5 VCHAR PROG EN 7 SWPWR ADIOO 9 ADIO3 ADIO1 11 ADIO4 ADIO2 13 ADIO6 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 2 3 shows the translation of hardware pins to a naming that fits the functionality of the built in firmware 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 9 32 Downloaded from Elc
10. 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 A EnOcean RF modules must not be modified or used outside their 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 29 32 Downloaded from Elcodis com
11. Upper 2 bits of AD O0 and value of AD 1 DATA BYTE1 Lower 8 bits Value of AD O0 analog input DATA BYTE3 DATA BYTE2 DATA BYTE1 AD 2 AD 0 HERMES NEUE AREAS AAG 4N SS IIO GRON NON SN 43 5N S HiN ON DATA BYTEO Digital sensor inputs as follows Bit 7 Bit 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 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 2 3 2 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 18 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 STM 31X STM 31XC 2 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 2 8 1 with the difference that DI_3 0 E If a manufacturer code is set this teach in telegram contains special information as described below Green Smart Wireless enocearr With this special teach in telegram it is possible to identify the manufacturer of a device and the function and type of a device There is a list available from the EnOcean Alliance describing the functionalities of the respec
12. 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 0x0 ie settle SettlingTime 1 MeasurementBandwidth In 2 resolution Bit To Offset Error 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 13 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC Parameter Conditions Notes Min Typ Max Units Digital Input Mode 2 4 Absolute maximum ratings non operating Symbol Parameter Min Max Units Supply voltage at VDD VCHAR Supply voltage from external energy harvester 0 6 V ICHAR Supply current from external energy harvester GND Ground connection VINA Voltage at every analog input pin VIND Voltage at RESET WAKEO 1 and every digital input 2 5 Maximum ratings operating Symbol Parameter Min Max Units VCHAR Supply voltage from external energy harvester 0 6 V Supply current from external energy harvester VCHAR lt 4 V Limited internally 4 V VCHAR 6 V 45 mA GND jGromndcomecion
13. installed Wire Monopole 1 0 dBi STM 312C STM 311C Pre installed helical antenna 4 3 IC Industry Canada certification In order to use EnOcean s IC number the OEM must ensure that the following conditions are met m 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 Contains IC 5713A STM311C The OEM must sign the OEM Limited Modular Approval Agreement with EnOcean 5 Label Information IC ID IC 5713A STM310C Fee ID SZU STM310C Mw 9 smoke N f Date Code FCC ID Product Revision ww YY variant 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 32 32 Downloaded from Elcodis com electronic components distributor
14. k Ki ki 2 1 Rezza EEE 0 3 RER Z NRO 0 VI aS PLP LPL LLNS 9 0 ODD DON MAIS j 9 o o uw H m n me v o o de i q Exe CN xr hs Versatz displacement Fr skante zu Bohrungen milled edge to holes Fr skante zu Leiterbild milled edge to conductive pattern Ritzkante zu Bohrungen score edge to holes Bohrungen holes Bohrungen zu Leiterbild holes to conductive pattern ALS BETRIEBSGEHEINNIS ANVERTRAUT ALLE RECHTE VORBEHALTEN POPRIETARY DATA COMPANY CONFIDENTIAL ALL RIGHTS RESERVED A40001 V27 A2 8 0 3 0 Ri tzkante score edge PX XXXIX KOK KKK KKK XY LR ERK IIR RR IKK NS RITTER ee RR SS AR CX LL 7 S2 K XC User Manual V D C s 2 xx P ox bod RX Ce v xx 5x m m 33 18 0 7 Fr skante RS MY milled edge KX ee gt d 2 Fr skante p BR ed milled edge 22 6120 4 3 88 0 5 25 205 1 6 1 Leiterplatten Gesamtdicke mit Leiterbahnen und L tstoplack 2 j 4 5 a O O 20 SX 7 oe eS LS 3 eS 4 eS SZ 4 S AXA LARS 2 22 90 53 43 4 5 XXX LZS X 2 e SZ oe oe E BS Rx RR eS Ll 2 RR DR X DR se see KX X eS X RK LLS S 2 eS 7 eS e Solarzelle solar cell XX xX 7 e gt e 7 rex RR gt x 9 SVT S FFF S49
15. 0 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 20 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocean STM 31X STM 31XC From these values the following performance parameters have been calculated Current Required reload Illumina in pA Operation Time time h at 200 24 h operation tion level required Wake in darkness h lux within 24 h after 6 h inlux for for conti cycle Transmit when storage for continuous illumination continuous nuous interval fully charged operation at x lux operation operation storage too small storage too small storage too small storage too small storage too small storage too small storage too small storage too small 21 storage too small 16 8 storage too small 7 8 260 3 6 120 3 100 Assumptions m Internal storage PAS614L VL3 with 0 25 F Umax 3 2 V Umin 2 2 V T 25 C m Consumption Transmit cycle 100 uC measurement cycle 30 uC m Pre installed solar cell ECS 300 operating values 3 V and 5 uA 200 lux fluorescent light m Current proportional to illumination level not true at very low levels These values are calculated values the accuracy is about 20 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 21 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 3 APPLICAT
16. 1 01 Page 12 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC 2 3 2 Analog and digital inputs Parameter Conditions Notes Min Typ Max Units Analog Input Mode with external circuitry as described in 3 2 Measurement range Singleended REFN REP Input coupling oo dey Measurement bandwidth 625 kHz OR ET ER Single ended against 10 MQ ER GND Q 1 kHz Single ended against 10 pF Effective measurement resolution 1 11 1 10 Bit 10bit measurement Offset error 1 O sB Gainerror oo 01 LSB TBD pe DNE TB LSB Sbit measurement 0 P Offset error A Gain error Eo 0 SB INL rr EEE ee eee p DNL TBD LSB Code pc Offset Error Describes the offset between the minimal possible code and code 0x00 ie 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
17. 2 9 TFransmit UMING fa ee Cet a Ce ee nt ne ee ee 19 2 10 Charging circuitry SR QM annununeunnununnnnnnnnnnnnnnnnnnnnnnnnnnn 20 2 11 Energy consumption A B n ewndatedeeeeeusckbeedeues vives steuedes 20 3 APPLICATIONS INFORMA FW cece cece cece nnn mm mA MH HIHHIHIHHHHennnmmmmI 22 3 1 Using the WAKE pins 4 a EE cee ccceceeee nee eeeneeeeeeeeesseeeees 22 3 2 Analog measurement Sn Re eee nun ee nnnnnnnn nun nnnnnnn nun nn nn nun nun nn nun 23 3 3 Antenna OPUONS edi illis een 24 3 3 1 Whip antenna STM 310 STM 310C STM 312 STM 312C eese 24 3 3 2 Helical antenna STR 54 STM SIC LLLLLLLuuueeeeeererrr mmm 25 3 4 Mounting ECT 310 or a battery STM 312 STM 312C only eee 26 3 5 Mounting STM31xWrO mEALISInSQ LLorem mmRRHIRIRIRHReHrnnn 27 3 0 TransmissioMEBI ge eek 28 4 AGENCY CEREIFISETTONS Wannen near 29 4 1 CE ejejge IERPSPPEPPN VERPEFERSERESEERRERERERPIUERFPRRPEREREREELBEREUERRORCRTERELSFEEFFURUEEEOERGBER 29 4 2 FCC Urffigd States certNi PBIlIon zzusnnnnnnnnnnnnnnnnnnnnnn nun nun nn un nun nun nun nn nun nun nenn 30 4 3 IC Industry Canada certification uuuussssnnnnnnnnnnnnnnnnnnnnnn nun nn nennen nenn nennen 32 5 Eoi HTOF inle O AE nenne 32 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 3 32 Downloaded from Elcodis com electronic components distributor USER MANUA
18. Configuration via serial interface 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 pins via serial interface Wake up cycle See section 2 7 1 Value can be set from 1 s to 65534 s Redundant See section 2 7 1 Min Max values for random interval Retransmission cycle If Min Max gt random switched off Threshold values for 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 Default AD O0 8 bit AD 1 8 bit AD 2 8 bit Option AD O 10 bit AD 1 6 bit AD 2 8 bit Resolution of the analog inputs Input mask A digital input mask for ignoring changes on digital input pins At default all input bits are checked Delay time between SWPWR Value can be set from 0 ms to 508 ms in steps No on and sampling moment of 2 ms Default delay time is 2 ms for stabilization of external sensor Select if AD_2 contains measurement value of external ADIO2 pin or from internal VDD 4 measurement values Every change of a wake pin triggers a wake up For both wake pins it can be configured indivi
19. IONS INFORMATION 3 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 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 A As the there is no internal pull up or pull down at the WAKEO pin it has to be en EO3000I Q Q gt 2 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 removed 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 m Connect WAKEO to UVDDext and connect an external button between WAKEO and GND As long as the button is pressed a current o
20. L Green Smart Wireless enocearr 1 GENERAL DESCRIPTION 1 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 p sors Or room operating panels Power supply is provided by a small solar cell an electors external energy harvester or an external 3 V back NN T up battery An energy storage element is installed to bridge periods with no supply from the energy harvester 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 but ton 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
21. 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 location 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 m The OEM must ensure that timing requirements according to 47 CFR 15 231 a c are met m The OEM must sign the OEM Limited Modular Approval Agreement with EnOcean The module must be used with only the following approved antenna s 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 31 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enoceamn STM 31X STM 31XC Model Type Gain STM 310C Pre
22. USER MANUAL Green Smart Wireless enocearr April 8 2011 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 01 82041 Oberhaching info enocean com April 8 2011 11 57 AM Germany WWW enocean com Page 1 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC REVISION HISTORY The following major modifications and improvements have been made to the first version of this document No Major Changes Initial version por New drawings added Agency approvals added new charging circuitry added edi torial changes Chapter 3 3 added Parameters of A D converter corrected and specified in more detail charging cir cuitry modified editorial changes Pin for connection of backup battery changed ICHAR modified in 2 4 and s 5 sec tion 3 4 inserted update of drawings Editorial changes 1 01 Block diagram and pin description modified Application note for analog measure ment added Configuration options modified Pai Published by EnOcean GmbH Kolpingring 18a 82041 Oberhaching Germany www enocean com info en
23. arn STM 31X STM 31XC TABLE OF CONTENT 1 GENERAL BESERIPTION earr ee ee 4 1 1 Basic UMCU ON ill oA AA EE 4 i E ea lalle gt Su 1 EPEREREPFFREFBRRENPEBERFEEREREERPERDEREREBEREEFERFERPEEEREERENTERRERUELDERFPERELRTRTELERRRUERER 5 1 3 AY SIC CITING OWS ee ee ee euere 5 1 4 Environments conditons sarrias sinisiin uena A AEA une rensteererer 7 LS Ordening Aron aulOl seen EEN TT 7 2 FUNCTIONAL DESCRIPTION usa ae ae er ee 8 2 1 Simplified firmware flow chart and block diagram cccccceee eee eee eee nn nn nn nn nn nn nnn 8 2 2 PIR OUT M ee ea een er ee X 9 2 3 Pin description and operational characteristics 2222s0ssnnnnnnnnn nenn nn nn nnn 10 2 3 1 GPIO SUPPLY VOlkage 22er een 12 2 32 Analog and digital IMPULS ers rale eec dk hrs idein desse hand aaa 13 2 4 Absolute maximum ratings non operating eeessseeeee enne 14 2 5 Maximum ratings CODBeratinig en een 14 2 6 Power management and voltage regulators eeeeeeeeeseeeeee nennen nnn 15 veste 1 7 7 MES DITS 16 2 7 1 Configuration via pins ME a ccc cece eene n nn n n rennene 16 2 7 2 Configuration via serial interface far e elec cece cece cece cnet eet eee nana nnne 17 2 8 Radio telegram y Z8 18 2 8 1 NormnabopelaliloOIissmvisseeseoroetoililieo ions een RESTER PuRHNPRUd PSU PEUS 18 2 8 2 Teach in telegram 9 me US een nnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnenn 19
24. dule 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 is 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 the
25. ectronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 3 6 Transmission range The main factors that influence the system transmission range are type and location of the antennas of 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 Line of sight connections Typically 3B0 m range in corridors up to 100 m in halls 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
26. electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 4 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 such 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 mo
27. f 1 uA will flow m 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 22 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr 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 FI a z O BUTTON2 UDVDDext a z el BUTTON3 s 1 d BUTTON4 rT aO 1 St 3 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 WPUR GND The offset voltages are defined by a resistor divider Resistors with a tolerance of 1 or less are recommended The sensor circuit must be designed to output voltages between REFN 2 0 and REFP full Scale 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 23 32 Downloaded from Elcodis com electronic components distributor USER MANUAL 3 3 Antenna options Green Smart Wireless enocearr 3 3 1 Whip antenna STM 310 STM 310C STM 312 STM 312C
28. ion via pins 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 100 s 20 Every 7 14 timer wake up signal affected at random 10 s 20 Every 70 140 timer wake up signal affected at random No cyclic wake up No redundant retransmission 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 bp 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 2316 The limited modular approval of STM 31xC is not valid in this case 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 16 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC 2 7 2
29. n another packet or packets containing the control signal may be transmitted at a later unpredictable time 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 30 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearn STM 31X STM 31XC 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 module 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
30. ocean 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 indirectly 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 2 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enoce
31. oding input Configuration interface Leave open or connect to GND See 2 7 1 Internal pull up ProgrammingVF 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 3 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 2 7 2 2 8 2 and 3 1 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 11 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr 2 3 1 GPIO supply voltage The IOVDD pin of EO3000I is internally connected to DVDD For digital 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 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 A If DVDD 0 V and IOVDD is not supplied e g while in sleep mode do not apply For I O pins configured as analog pins the IOVDD voltage level is not relevant See also 2 3 2 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V
32. odis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC 2 3 Pin description and operational characteristics STM 31x STM 31x Function Characteristics Symbol Symbol Not available at pin header Voltage Gold Cap Connection of additional external energy storage See 2 10 EO3000I via transistor con switched on 2 ms default before sam Hardware Firmware GND GND OJjGroundconnectio VDD VDD Supply voltage 2 1 V 5 0 V Start up voltage 2 6 V Maximum ripple see 2 6 Connection of external 3 V battery possi ble See 3 4 VCHAR VCHAR Charging input Input for an external energy harvester for use in STM 312 or a battery See 2 10 SWPWR SWPWR DVDD supply vol 1 8 V Output current max 5 mA switched tage regulator Supply for external circuitry available DVDD of output switched while not in deep sleep mode SWPWR is trolled by EO3000I pling of inputs and is switched off after ADIOS pin wards The delay time can be configured see 2 7 2 needed for stabilization of sen UVDDext UVDDext Ultra low power Not for supply of external circuitry Supply voltage For use with WAKE pins only see section regulator output 3 1 Limited to max 1 YA output current by an internal 1 8 MQ resistor UVDD of EO3000I with 1 8MQ in series IOVDD not IOVDD GPIO supply vol Internal connection to EO30001 DVDD available at tage typ 1 8 V pin c
33. onnec See 2 3 1 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 ADIOO AD O Analog input Input read 2 ms after wake up Resolution 8 bit default or 10 bit See also 2 7 2 ADIO1 AD 1 Analog input Input read 2 ms after wake up Resolution 8 bit default or 6 bit See 2 7 2 Resolution 8 bit See 2 7 2 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 10 32 Downloaded from Elcodis com electronic components distributor USER MANUAL V1 01 Green Smart Wireless enocearr STM 31X STM 31XC See 3 2 ADIO4 REFP Positive reference Input is read 2 ms after wake up and is input interpreted as positive voltage reference See 3 2 ADIO6 DI_2 Digital input Input read 2 ms after wake up See 2 7 2 Internal pull up SCSEDIOO DI O Digital input Input read 2 ms after wake up See 2 7 2 Internal pull up Programmigl E SCLKDIO1 DI 1 Digital input Input read 2 ms after wake up See 2 7 2 Internal pull up Programming I F ADIO3 REFN Negative reference Input is read 2 ms after wake up and is input interpreted as negative voltage reference WSDADIO2 CONF_1 Encoding input Configuration interface Leave open or connect to GND See 2 7 1 Internal pull up Programming F RSDADIO3 CONF O Enc
34. tery 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 converter 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 lit Cri api sm mmei UH S urs B NI IN EE EN N SIND 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 2 10 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 26 32 Downloaded from Elcodis com electronic components distributor USER MANUAL Green Smart Wireless enocearr 3 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 2010 EnOcean www enocean com STM 31x STM 31xC User Manual V1 01 Page 27 32 Downloaded from Elcodis com el
35. tive products ORG 0x07 Telegram type 4BS 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 O ID BYTE3 ID BYTE2 ID BYTE1 ID BYTEO module identifier Byte3 module identifier Byte2 module identifier Byte1 module identifier ByteO ORG Data_Byte3 Data Byte2 Data_Byte1 Data ByteO Function Type Manufacturer LRN Type RE2 RE1 REO LRN DI2 DI1 DIO 6 Bit Bit ID 11 Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 2 9 Transmittiming 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 2010 EnOcean www enocean com Downloaded from Elcodis com electronic components distributor STM 31x STM 31xC User Manual V1 01 Page 19 32 USER MANUAL Green Smart Wireless enocearr 2 10 Charging circuitry The figure below shows the internal charging circuit
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