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User Manual Scavenger Transceiver Module STM 300

1. USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 2 4 Environmental conditions Operating temperature 25 C 85 C Storage temperature 40 C 85 C Storage temperature in tape amp reel package 20 C 50 C Humidity 0 93 r h non condensing 2 5 Ordering Information Type Ordering Code Frequency STM 300 S3001 D300 868 300 MHz STM 300U S3051 D300 902 875 MHz The following solar cells are recommended for use with STM 300x Type Ordering Code Size ECS 300 S3005 D305 35 0 x 12 8 x 1 1 mm ECS 310 S3005 D310 50 0 x 20 0 x 1 1 mm For technical details regarding these solar cells please refer to the ECS 300 and ECS 310 homepages 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 7 45 USER MANUAL i Green Smart Wireless enocean 3 FUNCTIONAL DESCRIPTION 3 1 Simplified firmware flow chart and block diagram Start Significant Teach In change Retransmission No No No 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 8 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U RF_50 RF_WHIP RF Transceiver Mixed I O Interface pController oz k oO z mom Ww gx n 05 W gt gt ala lt D OU O0OVYO a 3 2 Hardware pin out a w Uu o Qa E x a a 5 a a lt lt gt zX KX z uw 2 2 2 5603 3 amp G GND
2. 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 Changes or modifications not expressly approved by EnOcean could void the user s au thority to operate the equipment 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 41 45 USER MANUAL Green Smart Wireless enocean The module must be used with only the following approved antenna s Part Number Type Gain Wire Monopole 1 0 dBi ANT 300 1 0 dBi AM11DG STO1 1 0 dBi 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 42 45 USER MANUAL Green Smart Wireless enocean 5 3 FCC United States Regulatory Statements This device complies with part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and
3. USER MANUAL V1 36 Green Smart Wireless enocean August 14 2015 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 300 STM 300U User Manual 82041 Oberhaching info enocean com V1 36 August 14 2015 Germany WWw enocean com Page 1 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U REVISION HISTORY The following major modifications and improvements have been made to the first version of this document No Major Changes 1 01 Tape running direction added in 3 8 1 10 Application note for multiple digital inputs with WAKE functionality added 1 20 Error corrected in 3 5 1 and 4 1 Maximum gain of external antenna at 50 Ohm output RF_50 is O dBi 1 25 Charging circuit in 3 1 corrected remarks added regarding use of IOVDD in 2 3 Parameters of A D converter corrected and specified in more detail in 2 3 2 1 26 Optional resolution at ADIOO ADIO1 ADIO2 corrected in 2 3 Detailed description in 2 9 1 was correct 1 30 New improved application note in 3 1 which avoids deep discharge of the long term storage 1 31 Updated data on conducted output power in 1 2 improved layout recommenda tions
4. 25 t 25 C to Peak Time gt IPC 020c 5 1 STM 300x shall be handled according to Moisture Sensitivity Level MSL4 which means a floor time of 72 h STM 300x may be soldered only once since one time is already con sumed at production of the module itself Once the dry pack bag is opened the desired quantity of units should be removed and the bag resealed within two hours If the bag is left open longer than 30 minutes the desiccant should be replaced with dry desiccant If devices have exceeded the specified floor life time of 72 h they may be baked according IPC JEDEC J STD 033B at max 90 C for less than 60 h Devices packaged in moisture proof packaging should be stored in ambient conditions not exceeding temperatures of 40 C or humidity levels of 90 r h STM 300x modules have to be soldered within 6 months after delivery 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 36 45 USER MANUAL Green Smart Wireless enocean 4 10 Tape amp Reel specification measuring plane for cavity dimensions 0 3 32 y Tape running direction 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 37 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 4 11 Transmission range The main factors that influence the system transmission range are type and location of the antennas of the receiver and the transmitter
5. 902 875 MHz Inside this manual the term STM 300x can be used to represent all of the above frequen cy variants This document describes operation of STM 300x modules with their built in firmware If you want to write own firmware running on the integrated micro controller or need more de tailed information on the Dolphin core please also refer to m Dolphin Core Description Dolphin API Documentation In addition we recommend following our application notes in particular m AN102 Antenna Basics Basic Antenna Design Considerations for EnOcean based Products AN105 315 MHZ Internal Antenna Design Considerations for EnOcean based Products AN207 ECS 300 310 Solar Panel Design Considerations AN208 Energy Storage Design Considerations AN209 STM 300 THERMO OR BATTERY POWERED Power Supply Alternatives to Solar Panel 2 GENERAL DESCRIPTION 2 1 Basic functionality The extremely power saving RF transmitter module family STM 300x of EnOcean en ables the realization of wireless and main tenance free sensors and actuators such as room operating panels motion sensors or valve actuators for heating control Power supply is provided by an external energy harvester e g a small solar cell e g EnOcean ECS 3x0 or a thermal har vester An energy storage device can be connected externally to bridge periods with no supply from the energy harvester A voltage limiter avoids damaging of the module when the su
6. Internal reference RVDD 2 0 12 Input coupling DC Measurement bandwidth 62 5 kHz Single ended against 10 MQ Input impedance GND 1 kHz 3 Single ended against 10 pF Input capacitance GND 1 kHz Effective measurement resolution 10 Bit 10 bit measurement Offset error 23 36 LSB Gain error 32 62 LSB Code lt 200 3 6 LSB INL 14 23 Code gt 200 3 6 LSB 4 10 DNL lt 0 5 LSB 8 bit measurement Offset error 6 9 LSB Gain error 8 16 LSB INL Code lt 50 a LSB Code gt 50 1 2 LSB 1 3 DNL lt 0 125 LSB Offset Error Describes the offset between the minimal possible code and Codes code 0x00 OXFF ft o se eee eees eee ece eee esettteteeteeetteeeeeny Gain Error Gain Error Describes the offset between maximum possible code and full scale e g Ox3FF for 10 bit 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 fil
7. 2 this device must accept any interference received including interference that may cause undesired opera tion Any changes or modifications not expressly approved by manufacturer could void the user s authority to operate the equipment IMPORTANT Any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equip ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communica tions However there is no guarantee that interference will not occur in a particular instal lation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna m Increase the separation between the equipment and receiver m Connect the equipment into an outlet on a circuit different from that to which the recei ver is connected m Consult the dealer or an experienced radio T
8. 300 STM 300U 3 9 Radio telegram 3 9 1 Normal operation The diagram below summarized the content of a data telegram as seen at programming interface of STM 300x 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_0O analog input 1x8bit 1x6it 1x10bit mode DATA_BYTE3 Value of AD_2 DATA_BYTE2 Upper 2 bits of AD_O and value of AD_1i DATA_BYTE1 Lower 8 bits Value of AD_O analog input DATA_BYTE3 DATA_BYTE2 DATA_BYTE1 AD_2 AD_1 AD_O 71615 14 3 2 1 0 5 4 3 2 1 0 9 8 7 1615413 2 10 DATA_BYTEO Digital sensor inputs as follows Bit 7 Bit O Reserved set to O DI_3 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 Byte0 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 19 45 USER MANUAL i Green Smart Wireless enocean STM 300 STM 300U 3 9 2 Teach in telegram If a manufacturer code is programmed into the module then the module transmits in stead of a
9. 8 lt C GND GND The figure above shows two examples how the WAKE inputs may be used When the LRN button is pressed WAKE1 is pulled to GND and a teach in telegram is transmitted As long as the button is pressed a small current is flowing from UVDD to GND WAKEO is connected to a toggle switch There is no continuous flow of current in either position of the switch If more digital inputs with WAKE functionality are needed in an application then WAKEO can be combined with some of the digital inputs as shown below This circuit includes also PI filters against keybouncing The proposed resistor and capacitor values can be adapted to customer specific applicatio BUTTON1 EE crake BUTTON2 i R2 1k c2 o ADIO6 DI_2 820 10n B DL2 BUTTON3 I STM300 EE C4 SCLKDIO1 DI_1 820 10n Di1 BUTTON4 Er GND Eee C6 820 10n B SCSEDIOO DI_O 4 4 Using RVDD If RVDD is used in an application circuit a serial ferrite bead shall be used and wire length should be as short as possible lt 3 cm The following ferrite beads have been tested 74279266 0603 74279205 0805 from Wurth Elektronik During radio transmission and reception only small currents may be drawn 1 lt 100 WA Pulsed current drawn from RVDD has to be avoided If pulsed currents are necessary suffi cient blocking has to be provided 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 26 45 USER MANUAL
10. DVDD VDD VDDLIM GND IOVDD balun E030001 RSDADIO3 RF_WHIP WSDADIO2 cnp SCLKDIO1 RF_50 STM300 TOP VIEW LES GND Iks i PROG_EN RVDD 9 ci N m n oO N Q 60000000600 2 P el m ei Del a a a a a 4444 lt lt lt The figure above shows the pin out of the STM 300x 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 When writing own firmware based on the DOLPHIN API please refer to the Dolphin Core Description and use this manual only for information regarding the module hardware such as pin out layout recommendations charging circuitry antenna options and approvals 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 9 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 3 3 Pin description and operational characteristics STM 300x STM 300x STM 300x Function Characteristics Hardware pin Firmware Symbol Ground connection Must be connected to GND Supply voltage 2 1V 4 5V Start up voltage 2 6 V Maximum ripple see 3 6 31 V_OUT RF supply voltage 1 8 V Output current max 10 mA regulator output See 0 Supply for external circuitry avail able while not in deep sleep mode 25 DVDD Digital supply volt 1 8 V Output current max 5 mA age regu
11. Green Smart Wireless enocean STM 300 STM 300U 4 5 Antenna options STM 300x 4 5 1 Overview Several antenna types have been investigated by EnOcean Please refer to our application notes AN102 and AN105 which give an overview on our recommendations All STM300x modules have been approved with whip antenna STM 300U has additionally been approved with helical and chip antenna 868 300 MHz modules used in Europe do not need additional approval if the external an tenna fulfils the following requirements Frequency 868 300 MHz Antenna must be suited for this band band ISM Antenna type Passive Mandatory for radio approval Impedance 50 Ohm Mandatory for radio approval Maximum gain lt 0 dBd Mandatory for radio approval In addition it is important to fulfill the following requirements in order to achieve compati bility with other EnOcean products and to ensure excellent EMI robustness VSWR lt 3 1 Important for compatibility with EnOcean protocol Return Loss gt 6 dB Important for compatibility with EnOcean protocol Bandwidth lt 20 MHz Important if 10 V m EMI robustness required for device A 902 875 MHz modules STM 300U please note that a full approval is needed if modules are used with antennas other than the specified anten nas 0 8 tinned 4 5 2 Whip antenna bared twisted and tinned 868 3 MHz Antenna 86 mm wire connect to RF_WHIP Mini
12. are 5 LSB at AD_1 input 6 analog inputs LSB at AD_O and 14 LSB at AD_2 The threshold value can be set between 0 and full scale for every input individually Resolution of the analog No Default AD_O 8 bit AD_1 8 bit AD_2 8 bit inputs Option AD_O 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 SCO on No Value can be set from 0 ms to 508 ms in steps and sampling moment of 2 ms Default delay time is 2 ms Source of AD_2 No Select if AD_2 contains measurement value of external ADIO2 pin or from internal VDD 4 Polarity of SCO signal No Polarity can be inversed Edge of wake 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 indi mission vidually 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 Information how to set these parame ters requires an agreement with EnOcean Unique manufacturer IDs are distributed by the EnOcean Alliance 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 18 45 USER MANUAL Green Smart Wireless enocean STM
13. must never be cut off Mainly the far end of the wire should be mounted as far away as possible at least 15 mm from all metal parts ground planes PCB strip lines and fast logic components e g micro processors Do not roll up or twist the whip antenna Radio frequency hash from the motherboard desensitizes the receiver Therefore m PCB strip lines on the user board should be designed as short as possible m A PCB ground plane layer with sufficient ground via is strongly recommended m Keep antenna away from noise generating parts of the circuit Problems may especially occur with switching power supplies 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 30 45 USER MANUAL Green Smart Wireless enocean 4 7 Recommendations for laying a whip antenna Antenna too close to GND area Antenna end led back to foot point Antenna too close to GND area 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 31 45 USER MANUAL Green Smart Wireless enocean 4 8 Layout recommendations for foot pattern The length of lines connected to I Os should not exceed 5 cm A It is recommended to have a complete GND layer in the application PCB at least in the area below the module and directly connected components e g mid layer of your application PCB Due to non isolated test points there are live signals accessible on the bottom side of the
14. 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 30 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 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 lightwei
15. 0x supply voltage reaches the typical VON threshold of 2 45 V If VDD subsequently falls below VON the energy source will be switched back to short term storage alone which will enable faster recharging As long as the voltage of the long term storage remains below VON the charge switcher will continuously switch the energy source between short term and long term storage trying to ensure continuous device operation This mechanism mitigates the effect of a potentially long charge time required to charge the long term storage sufficiently for the start of operation In addition the short term storage will not be charged over the VON threshold until the voltage on the long term storage also exceeds VON Charge switcher is the PMOS transistor Q1 driven from the STM 300x charge control out put CCO over TIA If the STM 300x VDD voltage is below the VON threshold only the small storage C1 is filled via D3 Once the VON threshold is reached the CCO control signal goes High T1B and Q2 are turned on and the long term storage C2 will be filled via Q2 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 23 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U Overvoltage protection Typical long term storage solutions have a rated operating voltage that must be not ex ceeded Overvoltage protection is therefore an essential aspect of the supply circuit design In the circuit suggest
16. 10U 1 5713A PTM210U E PTM 330U FCC ID SZV PTM330U IC 5713A PTM330U m STM 300U FCC ID SZV STM300U 1C 5713A STM300U STM 320U FCC ID SZV STM320U IC 5713A STM320U E STM 332U FCC ID SZV STM332U IC 5713A STM332U m TCM 300U FCC ID SZV STM300U 1C 5713A STM300U TCM 310U FCC ID SZV STM300U 1C 5713A STM300U TCM 320U FCC ID SZV TCM320U IC 5713A TCM320U 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 require ments 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 permitted The label must include the following text STM 300U Contains FCC ID SZV STM300U 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
17. 44 45 USER MANUAL Green Smart Wireless enocean 5 5 IC Industry Canada Regulatory Statements This device complies with Industry Canada licence exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device IMPORTANT Any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment Le pr sent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autoris e aux deux conditions suivantes 1 l appareil ne doit pas produire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrique subi meme si le brouillage est susceptible d en compro mettre le fonctionnement IMPORTANT Tous les changements ou modifications pas express ment approuv s par la partie responsable de la conformit ont pu vider l autorit de l utilisateur pour actioner cet quipment This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 45 45
18. A IOVDD 1 8 V Programming I F S Encoding input for Leave open or connect to GND wake up cycle Programming F S Encoding input for Leave open or connect to GND wake up cycle Programming I F S CP Encoding input for Leave open or connect to GND retransmission Programming IF CC C idzC CP Encoding input for Leave open or connect to GND retransmission LR Programming I F S Sensor control Digital output max current 15 pA HIGH x ms before analog inputs are read x 0 508 ms default 2 ms LOW at wake up and after reading of analog inputs Polarity can be inverted delay time can be programmed see 3 8 2 Max output current 15 HA See 3 7 for description of behaviour WAKEO Wake input Change of logic state leads to wake up and transmission of a telegram See also 4 3 WXIDIO WXODIO WAKEO 2 3 D _1 _0 dl 0 O O WAKE1 N LRN input Change of logic state to LOW leads to wake up and transmission of teach in telegram if a manufacturer code is rammed See also 3 9 2 and 4 3 RF_WHIP RF output Output for whip antenna RF_50 6 o RF_50 RF output 50 Ohm output for external antenna RF_WHIP 4 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 11 45 USER MANUAL Green Smart Wireless enocean 3 3 1 GPIO supply voltage For digital communication with other circuitry peripherals the digital 1 0 configured pins of the mixed signal sensor int
19. EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 5 45 USER MANUAL 2 2 Technical data Antenna Frequency Data rate Receiver Sensitivity at 25 C only via API Conducted Output Power 50Q min typ max Power Supply Current Consumption Input Channels Radio Regulations 1 according to ISO IEC 14543 3 10 2 0 1 telegram error rate based on transmitted sub telegrams 3 using 1dBm V 1 13 power settings which comply to limited modular approval 2 3 Physical dimensions PCB dimensions Weight STM 300x pads on bottom side of PCB 2015 EnOcean www enocean com Green Smart Wireless enocean External whip or 50 Q antenna mountable STM 300 868 300MHz ASK STM 300U 902 875 MHz FSK 125 kbps typ 96 dBm 868 300 MHz typ 98 dBm 902 875 MHz STM 300 3 0 dBm 5 7 dBm 7 0 dBm STM 300U 1 dBm 1 dBm 3dBm 2 1 V 4 5 V 2 6 V needed for start up Deep Sleep mode typ 0 2 HA Transmit mode typ 24 mA max 33 mA Receive mode via API only typ 33 mA max 43 mA 4x digital input 2x WAKE input 3x analog input Resolution 3x 8 bit or 1x 10 bit 1x 8 bit 1x 6 bit R amp TTE RED STM 300 FCC CFR 47 Part 15 STM 300U 22x 19x 3 1 mm 1 9g Unless otherwise specified dimensions are in mm Tolerances PCB outline dimensions 0 2 mm All other tolerances 0 1 mm STM 300 STM 300U User Manual V1 36 Page 6 45
20. IO supply voltage see also 0 17 3 6 V GND Ground connection 0 0 V VINA Voltage at every analog input pin 0 2 0 V VIND1 Voltage at RESET WAKEO 1 and every digital input 0 3 6 V pin except WXIDIO WXODIO VIND2 Voltage at WXIDIO WXODIO input pin 0 2 0 V 3 6 Power management and voltage regulators Symbol Parameter Conditions Notes Min Typ Max Units Voltage Regulators Ripple on VDD where 50 MVpp an Min VDD gt VON UVDD Ultra Low Power supply 1 8 V RVDD RF supply 1 7 1 8 1 9 V DVDD Digital supply 17 1 8 1 9 V Voltage Limiter VLIM Limitation voltage 4 5 V ILIM Shunting current 50 mA 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 14 45 USER MANUAL Green Smart Wireless enocean Threshold Detector VON Turn on threshold 2 3 2 45 2 6 Automatic shutdown if 1 85 1 9 2 1 VOFF tum off threshold Wb idrops below VOrr Voltage Limiter STM 300x provides a voltage limiter which limits the supply voltage VDD of STM 300x to a value VDDLIM which is slightly below the maximum VDD ratings by shunting of sufficient current Threshold detector STM 300x provides an ultra low power ON OFF threshold detector If VDD gt VON it turns on the ultra low power regulator UVDD the watchdog timer and the WAKE pin circuitry If VDD lt VOFF it initiates the automatic shut down of STM 300x 3 7 Charge control output CCO Aft
21. V technician for help 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 43 45 USER MANUAL Green Smart Wireless enocean 5 4 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 prod uct must include the following text STM 300U Contains IC 5713A STM300U Contient le module d mission IC 5713A STM300U The OEM must sign the OEM Limited Modular Approval Agreement with EnOcean Pour utiliser le num ro IC EnOcean le OEM doit s assurer que les conditions suivantes sont remplies Les exigences d tiquetage pour Industrie Canada sont similaires a ceux exig s par la FCC Le fabricant d quipement d origine OEM doit s assurer que les exigences en mati re d tiquetage IC sont r unies Une tiquette clairement visible l ext rieur d une partie non amovible du produit final doit contenir le texte suivant STM 300U Contains IC 5713A STM300U Contient le module d mission IC 5713A STM300U L OEM doit signer l accord OEM limit e Approbation modulaire avec EnOcean 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page
22. a tant 27 4 5 1 OVERVICW nn nan E E OE N E 27 4 5 2 Whip antenna iii a Da EE EEE E EEE AD E EEE DnP 27 4 5 3 Helical antenna supplier EnOcean ssssssssssssssssrrrrrrsrnrrrrnnnnorrrrnnnnnrrrrrnnnns 28 4 5 4 Chip antenna supplier Mitsubishi Material Type AM11DG STO1 29 4 6 Positioning of the Whip antenna sisi 30 4 7 Recommendations for laying a whip antenna cece cece e eee eee e eee e etna teeta 31 4 8 Layout recommendations for foot pattern 32 4 9 Soldering Information siseses resents pevesets e eee cede a ania eben 36 4 10 Tape amp Reel specification sis nnd 37 4 11 TRANSMISSION FANgE 2 5 mises cede nev neve ces ce ete vs neve Ces cede E V EAA 38 5 AGENCY CERTIFICATIONS sisi EEE EEE EEE Enns 39 5 CE approvals a ea cn E E tee cubvaty tata ta neuro taki gnome 39 5 2 FCC United States Certification cc ceeceee cece eee eee eee eee eee tees eae e tana nana 40 5 3 FCC United States Regulatory Statements rete e ee ee teeta teat eaten ees 43 5 4 IC Industry Canada Certification 00 neni 44 5 5 IC Industry Canada Regulatory Statements A 45 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 3 45 USER MANUAL Green Smart Wireless enocean 1 MODULE VARIANTS AND RELATED DOCUMENTS The STM 300 Scavenger Transceiver Module is available in following operating frequency variants STM 300 868 350 MHz STM 300U
23. aste top layer The data above is also available as EAGLE library In order to ensure good solder quality a solder mask thickness of 150 um is recommended In case a 120 um solder mask is used it is recommended to enlarge the solder print The pads on the solder print should then be 0 1 mm larger than the pad dimensions of the module as specified in chapter 2 3 not relative to the above drawing Nevertheless an application and production specific test regarding the amount of soldering paste should be performed to find optimum parameters 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 35 45 USER MANUAL Green Smart Wireless enocean 4 9 Soldering information STM 300x has to be soldered according to IPC JEDEC J STD 020C standard Profile Feature Pb Free Assembly Average Ramp Up Rate TSmax tO Tp Preheat Temperature Min TSmin 150 C Temperature Max TSmax Time fs tO tSmax Time maintained above Temperature T 217 C Time t 60 150 seconds Peak Classification Temperature Tp 260 C Time within 5 C of actual Peak Temperature tp 3 C second max 200 C 60 180 seconds 20 40 seconds Ramp Down Rate 6 C second max Time 25 C to Peak Temperature 8 minutes max Note 1 All temperatures refer to topside of the package measured on the package body surface 4 me Te Temperature Preheat
24. board design recommendations and dimensions Be aware that matching values differ 902 875 MHz Limited modular approval is available Please contact EnOcean to sign the mandatory limited modular approval user agreement Dimensions may not be shortened Matching circuit is part of the limited modular approval and may not be changed Minimum top and bottom side ground plane required as shown below Connect ground planes using multiple via as shown Connect matching circuit to RF_50 Use High Q wire wound in ductors e g 0603 Murata LQW18A series Matching circuits values Li 3 9nH L2 33nH L3 12nH This antenna evaluation board is available upon request for use with EnOcean EDK 350 developer kit k fe Smm Em BanH Anka HA AB ZZZ For any further questions or chip antenna quotes please refer to Mitsubishi Materials website at www mmea com or email to electroniccomponents mmus com 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 29 45 USER MANUAL Green Smart Wireless enocean 4 6 Positioning of the whip antenna Positioning and choice of receiver and transmitter antennas are the most important factors in determining system transmission range For good receiver performance great care must be taken about the space immediately around the antenna since this has a strong influence on screening and detuning the an tenna The antenna should be drawn out as far as possible and
25. capacitors should not be deep discharged to voltages below 1 5 V to avoid long term degradation of their capacity and lifetime Therefore undervoltage protection is essential for systems containing such devices In the circuit above undervoltage protection is controlled through Q2 In normal operation when VDD reaches the VON threshold the STM 300x charge control output pin CCO goes high T1B rapidly discharges C3 to GND and Q2 turns on long term storage If VDD falls below the VOFF threshold then the STM 300x charge control CCO goes low and the C3 charge recovers very slowly over R6 If VDD remains below VOFF and CCO conse quently remains low for a longer time then C3 will be charged sufficiently to turn off Q2 and thus switch off the discharge path from the long term storage C2 via D4 to STM 300x thus avoiding deep discharge of C2 For more details and alternative circuits please refer to application note AN208 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 24 45 USER MANUAL Green Smart Wireless enocean 4 2 Using SCO pin STM 300x provides an output signal at SCO which is suited to control the supply of the sen sor circuitry This helps saving energy as the sensor circuitry is only powered as long as necessary In the default configuration SCO provides a HIGH signal 2 ms delay time before the analog inputs are read It is possible to adjust the delay time and also the polarity o
26. dules 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 2 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U TABLE OF CONTENT 1 MODULE VARIANTS AND RELATED DOCUMENTS cccccecceceeeeee eee eeeeneteeeneeeaeeaennes 4 2 GENERAL DESCRIPTION ss scanner renaenentenenene ieee enivsa cine 4 2 1 Basic functionality sessista te sauna tenants n nn ee ne enue esas dote teen EENSTAART 4 2 2 Technical data seen Min raie eee avan tienne it nent 6 2 3 Physical dimensions si EEE EEE EES 6 2 4 Environmental conditions sisser sinai a ie E A EE E a EENE 7 2 5 Ordering Information 4 44 N ANNAA ANANE NAA NAAKANNEN AN KEAMEN 7 3 FUNCTIONAL DESCRIPTION 5 sisucvmmmmemnneareneeeneneersenienenmantnienee nie aaa 8 3 1 Simplified firmware flow chart and block diagram 8 8 3 2 Hardware pin OUt sis dcsarsimevineviesdiervadensiecmoasebaueeasd needs menn anne dette tan
27. ed above overvoltage protection is implemented by an S 1000C32 M5T1ix voltage detector from Seiko SII or alternatively a member of the NCP300LSN30T1G series from ON Semiconductor which limits the maximum charging voltage to 3 3 V in order to avoid damaging long term energy storage If a different voltage limit is required this voltage detector has to be replaced by a suitable voltage variant As soon as the voltage on the voltage detector input exceeds the selected threshold the voltage detector transitions to a logic High level on its output which is connected to the T1A emitter The T1A base will then have a lower voltage than its emitter and the transistor TIA will be turned off That will result in the load switch Qi being turned off as well which will switch off the supply to the long term storage The selected voltage detector must both have an ultra low quiescent current in the operat ing range and an appropriate threshold voltage in accordance to the parameters of the se lected long term energy storage e g a 3 2 V nominal threshold for a 3 3 V capacitor If the selected threshold is too low then energy would be wasted If the nominal threshold is too high then energy storage life expectation might be affected The S 1000C32 M5T1x voltage detector with a 3 2 V nominal threshold provides a good compromise between those two constraints Undervoltage protection Certain types of long term energy storage elements such as PAS
28. er start up STM 300x provides the output signal of the threshold detector at the CCO output pin CCO is supplied by UVDD The CCO output value remains stable also when STM 300x is in deep sleep mode Behaviour of CCO At power up TRISTATE until VDD gt VON then HIGH if VDD gt VON then HIGH if VDD lt VON then LOW if VDD lt VOFF then LOW or TRISTATE VDD VDD cco VON VDD lt VOFF TRISTATE wO 9V fete or LOW For definition of VON and VOFF please refer to 3 6 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 15 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 3 8 Configuration STM 300x provides several encoding input pins allowing to configure certain parameters STM 300x checks the status of these pins at every wake up It is possible to override these hardware defined configuration settings by software Both mechanisms are described be low 3 8 1 Hardware defined configuration settings On STM 300x it is possible to define wake up cycle time and redundant transmission fre quency via dedicated configuration inputs Wake up cycle time configuration Two input pins CW_O and CW_1i define the wake up cycle time Each of these pins can either be connected to GND or left unconnected The resulting wake up cycle time is shown in the table below cwW_o cw_i Wake up cycle time NC NC 1s 20 GND NC 10 s 20 NC GND 100 s 20 GND GND No cycl
29. erface ADIOO to ADIO7 and the pins of the programming interface SCSEDIOO SCLKDIO1 WSDADIO2 RSDADIO3 may be operated from supply voltages different from DVDD An interface supply voltage pin IOVDD is available for such use cases which can be con nected either to DVDD or to an external supply within the tolerated voltage range of IOVDD Note that the wristwatch XTAL I Os WXIDIO and WXODIO are always supplied from UVDD there may be an unpredictable and varying current flow from IOVDD caused by internal floating nodes It must be ensured that the current into IOVDD does not exceed 10 mA while DVDD 0 V If DVDD 0 V and IOVDD is not supplied do not apply voltage to any above men tioned pin This may lead to unpredictable malfunction of the device If DVDD 0 V e g in any sleep mode or if VDD lt VOFF and IOVDD is supplied For 1 0 pins configured as analog pins the IOVDD voltage level is not relevant However it is important to connect IOVDD to a supply voltage as specified in 3 5 IOVDD DENNSDSDSYSSDD GROGGSESSTSD SUzrxMm0G06G0000 crea 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 12 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 3 3 2 Analog and digital inputs Parameter Conditions Notes Min Typ Max Units Analog Input Mode Single ended 0 067 RVDD V Measurement range
30. f the signal via the programming interface see 3 8 2 STM300 Sensor circuit DVDD GND GND The figure above illustrates the use of the SCO pin with default polarity to control an ex ternal sensor circuit Do not supply sensors directly from SCO as this output can only provide maximum 15 pA 4 3 Using WAKE pins The logic input circuits of the WAKEO and WAKE1 pins are supplied by UVDD and therefore also usable in Deep Sleep Mode or Flywheel Sleep Mode via API only Due to current minimization there is no internal pull up or pull down at the WAKE pins When STM 300x is in Deep Sleep Mode or Flywheel Sleep Mode via API only and the logic levels of WAKEO and or WAKE1 are changed then STM 300x starts up There are no internal pull up or pull down cells at the WAKE pins External circuitry is required to ensure that the WAKE pins are at a defined logic level at any time When using the UVDD regulator output as source for the logic HIGH of the WAKE pins it is strongly recommended to protect the ultra low power UVDD voltage regulator against accidental excessive loading by connection of an external 1 8 MQ series resistor To avoid keybounce we strongly recommend adding a PI filter at wake inputs with buttons or keys 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 25 45 USER MANUAL Green Smart Wireless enocean GND GNDGND STM3
31. ght walls filled with insulating wool on metal foil m 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 38 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 5 AGENCY CERTIFICATIONS STM 300x modules have been tested to fulfil the approval requirements for CE STM 300 and FCC IC STM 300U 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 modules bear the EC conformity marking CE and conform to the R amp TTE RED 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 The following provis
32. he delay time between the three transmission 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 20 45 USER MANUAL STM 300 STM 300U 3 11 Energy consumption Green Smart Wireless enocean Current mA 100 10 1 o 2 0 001 0 0001 0 00001 40 50 60 Time ms 70 80 90 100 Current Consumption of STM 300x 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 storage while consumption of electric charge is constant From these values the following performance parameters have been calculated Wake cycle s Assumptions Transmit interval Operation Time in darkness h when storage full Required reload time h at 200 lux within 24h 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 i
33. ic wake up Redundant retransmission Two input pins CP_O and CP_1 control an internal counter which is decreased at every wake up signal Once the counter reaches zero the redundant retransmission signal is sent Each of these pins can either be connected to GND or left unconnected The resulting wake up cycle time is shown in the table below CP_O CP_1 Number of wake ups that trigger a redundant retransmission NC NC Every timer wake up signal GND NC Every 7 14 timer wake up signal affected at random NC GND Every 70 140 timer wake up signal affected at random GND GND 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 16 45 USER MANUAL Green Smart Wireless enocean 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 s
34. in 3 6 1 32 Antenna recommendations removed and referred to external application note AN102 and AN105 Maximum Rating for IOVDD modified IOVDD may now exceed VDD Chapter Related Documents added Figure added in 3 3 1 parameters for antenna requirements relaxed in 4 5 1 1 33 Added STM 300U 902 875 MHz new product image 1 34 Updated Agency certifications according to FCC IC requirements 1 35 Mitsubishi Materials Chip Antenna added to limited modular approval 1 36 Improved ext button circuit example to avoid keybounce of digital inputs deleted STM 300C R6 amp TTE gt R amp TTE RED 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 mo
35. lator out Supply for external circuitry avail put able while not in deep sleep mode 32 UVDD Ultra low power Not for supply of external circuitry supply voltage For use with WAKE pins see section regulator output 4 3 Max 1 WA output current limiter input Maximum shunting current 50 mA 23 IOVDD GPIO supply volt Must be connected to desired inter age face supply voltage as specified in 3 5 e g to DVDD See also 0 Reset input Active high reset 1 8 V Programming I F Connect external 10 kQ pull down PROG_EN 18 PROG_EN Programming I F HIGH programming mode active LOW operating mode Digital input connect external 10 kQ oy pull down ADIO1 ADIO2 ADIO3 ADIO4 Analog input Input read 2 ms after wake up Resolution 8 bit default or 6 bit See also 3 3 2 A Analog input Input read 2 ms after wake up See also 3 3 2 Input read 2 ms after wake up See also 3 3 2 Input read 2 ms after wake up See also 3 3 2 D D D ND DD AD_0O Analog input Input read 2 ms after wake up Resolution 8 bit default or 10 bit See also 3 3 2 2 10 I 1 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 10 45 USER MANUAL 1 36 Green Smart Wireless enocean STM 300 STM 300U ADIO5 ADIO6 T SCSEDIOO SCLKDIO1 WSDADIO2 RSDADIO3 Input read 2 ms after wake up See also 3 3 2 Input read 2 ms after wake up See also 3 3 2 Transmission Max output current 0 65 m
36. llumination at x lux storage too small storage too small storage too small storage too small storage too small storage too small 260 120 100 Current Illumina tion level in lux for continuous operation m Storage PAS614L VL3 with 0 25 F Umax 3 2 V Umin 2 2 V T 25 C Consumption Transmit cycle 100 uC measurement cycle 30 uC Indoor solar cell operating values 3 V and 5 pA 200 lux fluorescent light e g ECS 300 solar cell Current proportional to illumination level not true at very low levels These values are calculated values the accuracy is about 20 2015 EnOcean www enocean com in HA required for con tinuous operation STM 300 STM 300U User Manual V1 36 Page 21 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 4 APPLICATIONS INFORMATION 4 1 How to connect an energy harvester and energy storage STM 300x is designed for use with an external energy harvester and external energy stor age In order to support both a fast start up time and long term operation with no energy supply available usually two different types of energy storages are used A small short term energy storage fills quickly and allows a fast start up while a large long term energy storage fills more slowly but can provide a large buffer for times where no energy is available e g at night in a solar powered sensor Both short term and long term storage are typically impleme
37. module Please regard the following advices to prevent interference with your application circuit m Avoid any copper structure in the area directly underneath the module top layer layout of your application PCB If this is not possible in your de sign please provide coating on top of your PCB to prevent short circuits to the module test pads All bare metal surfaces including via have to be cov ered e g adequate layout of solder resist m Itis mandatory that the area marked by the circle in the figure below is kept clear of any conductive structures in the top layer and 0 3 mm below Otherwise RF performance will be degraded Furthermore any distortive signals e g bus signals or power lines should not be routed underneath the module If such signals are present in your design we sug gest separating them by using a ground plane between module and these signal lines A The RVDD line should be kept as short as possible Please consider recommenda tions in section 0 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 32 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U Top layer 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 33 45 USER MANUAL i Green Smart Wireless enocean Solder resist top layer 95 USER MANUAL Green Smart Wireless enocean Solder p
38. mum GND plane 38 mm x 18 mm Minimum distance space 10 mm 902 875 MHz Antenna 64 mm wire connect to RF_WHIP Minimum GND plane 50 mm x 50 mm Minimum distance space 10 mm Cu wire LiY according to VDE 0812 or 0245 CI 5 or CI 6 Insulation PVC mixture TI2 according to VDE 0207 4 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 27 45 USER MANUAL Green Smart Wireless enocean 4 5 3 Helical antenna supplier EnOcean 868 3 MHz EnOcean Type ANT 300 Dimensions according to drawing below Connect to RF_WHIP Please contact EnOcean for MOQ Minimum GND plane 35 mm x 30 mm Minimum distance space 10 mm 902 875 MHz Limited modular approval available Please contact EnOcean for MOQ and necessary limited modular approval user agreement Dimensions according to drawing below Connect to RF_WHIP Minimum GND plane 35 mm x 30 mm Minimum distance space 10 mm Ansicht A 22 72 2 Windungsbereich 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 28 45 USER MANUAL i Green Smart Wireless ocean STM 300 STM 300U 4 5 4 Chip antenna supplier Mitsubishi Material Type AM11DG STO1 868 3 MHz Additional matching circuit and proper board design is required Check with supplier for matching circuit and board design guidelines Connect matching circuit to RF_50 using 50 Ohm strip lines Please follow 902 MHz
39. normal telegram a dedicated teach in telegram if m Digital input DI_3 0 at wake up or m Wake up is triggered via WAKE1 pin LRN input With this special teach in telegram it is possible to identify the manufacturer the function and the type of a device There is a list available from the EnOcean Alliance describing the functionalities of the respective products If no manufacturer code is programmed then the module does not react to events on WAKE1 LRN input 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 0 ID_BYTE3 module identifier Byte3 ID_BYTE2 module identifier Byte2 ID_BYTE1 module identifier Byte1 ID_BYTEO module identifier Byte0 ORG _ Data_Byte3 Data_Byte2 Data_Bytel Data_ByteO ID RE1 REO LRN DI2 DIL DIO Function Type Manufacturer LRN Type RE2 6 Bit 7 Bit ID 11 Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 1Bit 3 10 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 Transmission of a subtelegram lasts approximately 1 2 ms T
40. nted as capacitors The short term storage capacitor is usually in the range of 470 to 1000 uF while for the long term storage a capacity of 0 25 F is suggested STM 300x provides a digital output CCO see also 3 7 which allows controlling the charging of such two storages The block diagram below shows a typical implementation of a suitable charging circuit There capacitor Ci acts as short term storage while capacitor C2 provides the long term storage If both energy storages are depleted and the supply voltage is below the VON voltage level then only the small storage is charged Once the VON threshold is reached the CCO output signal changes and the system will start to charge the large storage Charge switcher Overvoltage Energy source protection e g solar panel STM 300 Undervoltage protection vooum EH fk 2 cco RC delay C2 Short term storage Long term storage 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 22 45 USER MANUAL Green Smart Wireless enocean The circuit below is designed for an energy storage capacitor specified for 3 3 V e g PAS614L VL3 PMEG2010AEB VY D3 D4 BC847 Dual K S 1000C32 M5T1G_SII Y ve STM300 100nF Charge switcher functionality The charge switcher as shown above connects both short term storage C1 and long term storage C2 parallel to the energy source as soon as the STM 30
41. os apply e EnOcean RF modules must not be modified or used outside their specification limits e EnOcean RF modules may only be used to transfer digital or digitized data Analog speech and or music are not permitted e The final product incorporating EnOcean RF modules must itself meet the es sential requirement of the R amp TTE RED Directive and a CE marking must be affixed on the final product and on the sales packaging each Operating in structions containing a Declaration of Conformity has to be attached e If the transmitter is used according to the regulations of the 868 3 3 MHz band a so called Duty Cycle of 1 per hour must not be exceeded Perma nent transmitters such as radio earphones are not allowed e The module must be used with only the following approved antenna s Type Parameter Value Wire Monopole at RF_WHIP Maximum gain 1 0 dBi External antenna at RF_50 Antenna type Passive Impedance 50 Ohm Maximum gain lt 0 dBd 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 39 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U 5 2 FCC United States Certification STM 300U 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 amount
42. pply from the energy harvester gets too high 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 4 45 USER MANUAL Green Smart Wireless enocean The module provides a user configurable cyclic wake up After wake up a radio telegram input data unique 32 bit sensor ID checksum will be transmitted in case of a change of any digital input value compared to the last transmission or in case of a significant change of measured analogue values different input sensitivities can be selected 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 a wake up can also be triggered externally Features with built in firmware 3 A D converter inputs 4 digital inputs Configurable wake up and transmission cycle Wake up via Wake pins Voltage limiter Threshold detector Application notes for calculation of energy budgets and management of external energy storages Product variants STM 300 STM 300U Features accessible via API Using the Dolphin API library it is possible to write custom firmware for the module STM 300x is in system programmable The API provides Integrated 16 MHz 8051 CPU with 32 kB FLASH and 2 kB SRAM Receiver functionality Various power down and sleep modes down to typ 0 2 pA current consumption Up to 16 configurable I Os 10 bit ADC 8 bit DAC 2015
43. s of energy and may be powered by a battery The module transmits short radio packets comprised of control signals in some cases the control signal may be accompanied 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 The module is designed 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 STM 300U radio module can be operated in the United States without additional Part 15 FCC approval approval 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 development 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 trig gered 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 some thing 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 tran
44. smission of additional control signals This may be necessary if prior packet s was were lost to fading or interference Subsequent triggers can also 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 avail able from the energy source Automatic Activation The radio module also can be configured to transmit a short packetized control signal if triggered automatically by a relevant change of its inputs or in response to receiving a signal from another transmitter for example Again the packet contains a control signal that is intended to control something at the receiving 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 time 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 40 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U The device is capable to operate as a repeater which can receive signals from the following list of FCC IC approved transmitters and retransmit the signals STM 300U 902 875 MHz PTM 210U FCC ID SZV PTM2
45. te 9 3 3 Pin description and operational characteristics 10 3 3 1 GPIO supply VOItAgE ss ciieciiwcneniideeeeviesiensieaivee cn naine ere erent 12 3 3 2 Analog and digital inputs sisi 13 3 4 Absolute maximum ratings non operating 14 3 5 Maximum ratings operating EEE nen 14 3 6 Power management and voltage regulators e cece cece cece eee eee ee eee eee teeta nee 14 3 7 Charge control output CCO EEE EEE nt 15 3 8 Configurations cerner nn ennemie ane Gude nied EE EE ian 16 3 8 1 Hardware defined configuration settings 16 3 8 2 Configuration via programming interface cceceee eect eee eee eee teeta eee eeee ees 17 3 9 Radio teleqraM sas diese ob a i diane dev oonwe anaia ana 19 3 9 1 Normal Operation seccciisccvcciaciucviacniecivesviesviaseeasiwass bec EE EE EEEE 19 3 9 2 Teach telegra M unnan berne dessine raa ets oad deese interet seit 20 3210 Transmit CUMING ssid crane na nee nr tent 20 3 11 Energy CONSUMPTION verirsin nies ee ie veeaniee oeeenste save dise een weve Oive cede nine 21 4 APPLICATIONS INFORMATION eee nnn n EERE Ena 22 4 1 How to connect an energy harvester and energy storage 22 4 2 Using the SCO phase ane disease nee amn enr anenne nr nette 25 4 3 Using the WAKE DINS issus due amas guemere sm asemeaeteesenenneavecentonmennuaerssiuaeines 25 4 4 USING RVDD scie onran e eE e EEE E E NEEE ERE EEO rune 26 4 5 Antenna options STM 300X siccisieis tives evecisiens tease eveees ou AAN ENa teas i
46. ters A quasi static signal must be applied as long as the filter needs to settle SettlingTime 1 MeasurementBandwidth In 2 resolution Bit nn ideal real Offset Error oxoo 0 1 Uoc For further details please refer to the Dolphin Core Description 13 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 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 13 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U Parameter Conditions Notes 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 IOVDD 3 0 3 6 V 38 54 85 kQ 3 4 Absolute maximum ratings non operating Symbol Parameter Min Max Units VDD 0 5 5 5 V VDDLIM Supply voltage at VDD and VDDLIM IOVDD GPIO supply voltage 0 5 3 6 V GND Ground connection 0 0 V VINA Voltage at every analog input pin 0 5 2 V VIND1 Voltage at RESET WAKEO 1 and every digital input 0 5 3 6 V pin except WXIDIO WXODIO VIND2 Voltage at WXIDIO WXODIO input pin 0 5 2 V 3 5 Maximum ratings operating Symbol Parameter Min Max Units VDD VOFF 4 5 V VDDLIM Supply voltage at VDD and VDDLIM IOVDD GP
47. trength limits of 15 231e The limited modular approval of STM 300U is not valid in this case 3 8 2 Configuration via programming interface Via the programming interface the parameters stored in the configuration area can be modified which provides a lot more configuration options Note that values set via programming interface override hardware settings Note also that these settings are read only after RESET or power on reset and not at every wake up of the module The interface is shown in the figure below Reset PROG_EN USE USB lt gt SPI sx SCSEDIOO interface SCLKDIO1 WSDADIO2 DCNANTN2 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 350 developer s kit 2015 EnOcean www enocean com STM 300 STM 300U User Manual V1 36 Page 17 45 USER MANUAL Green Smart Wireless enocean STM 300 STM 300U Configurable Parameters The table below summarizes the parameters that can be configured via the programming interface Parameter Configuration Configuration via pins via programming interface Wake up cycle See section 3 8 1 Value can be set from 1 s to 65534 s Redundant See section 3 8 1 Min Max values for random interval Retransmission cycle If Min Max gt random switched off Threshold values for No The default values

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