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USER MANUAL
Scavenger Transmitter Module
STM 31x / STM 31xC
April 8, 2011
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
Kolpingring 18a
82041 Oberhaching
Germany
Downloaded from
Elcodis.com
electronic components distributor
V1.01
Observe precautions! Electrostatic sensitive devices!
Phone +49.89.67 34 689-0
Fax
+49.89.67 34 689-50
info@enocean.com
www.enocean.com
Subject to modifications
STM 31x / STM 31xC User Manual V1.01
April 8, 2011 11:57 AM
Page 1/32
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Summary of Contents for EnOcean STM 31 Series
- Page 1 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 +49.89.67 34 689-50 STM 31x / STM 31xC User Manual V1.01...
- Page 2 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.
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Page 3: Table Of Contents
4.1 CE Approval ....................29 4.2 FCC (United States) certification ..............30 4.3 IC (Industry Canada) certification ..............32 Label Information ..................32 © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 3/32 Downloaded from Elcodis.com... -
Page 4: General Description
GENERAL DESCRIPTION Basic functionality The extremely power saving RF transmitter module STM 31x of EnOcean enables the realization of a wide range of wireless and maintenance free sen- sors such as temperature sensors, humidity sen- sors, or room operating panels. -
Page 5: Technical Data
(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 STM 31x / STM 31xC User Manual V1.01 | Page 5/32 Downloaded from Elcodis.com... - Page 6 USER MANUAL V1.01 STM 31X / STM 31XC © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 6/32 Downloaded from Elcodis.com electronic components distributor...
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Page 7: Environmental Conditions
STM 311C S3031-D311 315.0 MHz STM 312C S3031-D312 315.0 MHz 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... -
Page 8: Functional Description
USER MANUAL V1.01 STM 31X / STM 31XC FUNCTIONAL DESCRIPTION Simplified firmware flow chart and block diagram © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 8/32 Downloaded from Elcodis.com electronic components distributor... -
Page 9: Pin Out
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 Elcodis.com... -
Page 10: Pin Description And Operational Characteristics
Resolution 8 bit (default) or 6 bit. See 2.7.2. ADIO2 AD_2 Analog input Input read ~2 ms after wake-up. 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... - Page 11 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...
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Page 12: Gpio Supply Voltage
SCLKDIO1, WSDADIO2, RSDADIO3). This may lead to unpredictable malfunction of the device. For I/O pins configured as analog pins the IOVDD voltage level is not relevant! See also 2.3.2. © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 12/32 Downloaded from Elcodis.com... -
Page 13: Analog And Digital Inputs
3 dB input bandwidth, resulting in 111 µs settling time to achieve a deviation of an input signal <1 LSB (<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... -
Page 14: Absolute Maximum Ratings (Non Operating)
Ground connection VINA Voltage at every analog input pin VIND Voltage at RESET, WAKE0/1, and every digital input © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 14/32 Downloaded from Elcodis.com electronic components distributor... -
Page 15: Power Management And Voltage Regulators
If VDD ≤ 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... -
Page 16: Configuration
In addition the device has to comply with the lower field strength limits of 15.231e). The limited modular approval of STM 31xC is not valid in this case. © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 16/32 Downloaded from Elcodis.com... -
Page 17: Configuration Via Serial Interface
(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: Reset PROG_EN USB <= > SPI... -
Page 18: Radio Telegram
USER MANUAL V1.01 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. -
Page 19: Teach-In Telegram
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 respective products. -
Page 20: Charging Circuitry
Energy consumption varies with voltage of the energy sto- rage while consumption of electric charge is constant. © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 20/32 Downloaded from Elcodis.com... - Page 21 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...
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Page 22: Applications Information
Connect a 3 terminal switch and switch WAKE0 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... -
Page 23: Analog Measurement
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 (=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... -
Page 24: Antenna Options
868MHz: > 2cm 315MHz: > 4cm Glass, wood, concrete, metal Host PCB GND plane 868MHz: > 2cm 315MHz: > 4cm © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 24/32 Downloaded from Elcodis.com electronic components distributor... -
Page 25: Helical Antenna (Stm 311, Stm 311C)
STM 31x with host PCB 868MHz: > 5mm 315MHz: > 10mm Glass, wood, concrete, metal 868MHz: > 2mm 315MHz: > 4mm © 2010 EnOcean | www.enocean.com STM 31x / STM 31xC User Manual V1.01 | Page 25/32 Downloaded from Elcodis.com electronic components distributor... -
Page 26: Mounting Ect 310 Or A Battery (Stm 312 / Stm 312C Only)
STM 312 provides solder pads for ECT 310 or for a battery holder for CR16xx batteries. ECT 310 is a low-cost ultra-low-voltage DC/DC 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. -
Page 27: Mounting Stm 31X Into A Housing
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... -
Page 28: Transmission Range
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 A summarized application note to determine the transmission range within buildings is available as download from www.enocean.com. -
Page 29: Agency Certifications
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. -
Page 30: Fcc (United States) Certification
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. - Page 31 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. End users of products, which contain the module, must not have the ability to alter the firmware that governs the operation of the module.
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Page 32: Ic (Industry Canada) Certification
Pre-installed helical antenna -9 dBi 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.
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