Murata Electronics North America DM2100A TRANSCEIVER MODULE User Manual USERS MANUAL

Murata Electronics North America TRANSCEIVER MODULE USERS MANUAL

USERS MANUAL

1®DM2100The DM2100 is a 916.5 MHz transceiver module designed for wireless industrial sensor applica-tions. The DM2100 is equipped with seven I/O ports. Each port can be configured as an analoginput, a digital input, or a digital output. The DM2100 is also equipped with a serial data port. Thecommunication range of the DM2100 in an “open field” environment is typically 200 meters/hop.The DM2100 combines RFM’s low-current ASH radio technology with low-power microprocessortechnology to achieve very long battery life. The DM2100 employs NOKOTA’s SOS-OEA V1.5multi-mode mesh network protocol, which provides robust and flexible wireless network routing, arich application command set, and a powerful and easy-to-use network management utility. TheDM2100 is certified under FCC 15.249 regulations.Rating Value UnitsAll Input/Output Pins -0.3 to +4.0 VNon-Operating Ambient Temperature Range -50 to +100 oCAbsolute Maximum Ratings•NOKOTA SOS-OEA V1.5 Multi-mode Mesh Network Protocol•Network Configurable Analog, Digital and Serial I/O Ports•3 V, Very Low Current Operation plus Sleep Mode•FCC 15.249 CertifiedIn DevelopmentElectrical CharacteristicsCharacteristic Sym Notes Minimum Typical Maximum UnitsOperating Frequency fO916.30 916.70 MHzModulation Type OOKRF Encoded Data Transmission Rate 4.8 kb/sReceive Mode:Average Input Current, 3 Vdc Supply IR4mAInput Signal for 10-3 BER, 25 °C-100 dBmTransmit Mode:Peak Input Current, 3 Vdc Supply ITP 13.5 mAPeak Output Power PO1mWSleep Mode Average Input Current, 3 Vdc Supply IS10 µAAnalog Input Measurement Range (10-bit ADC) 0 VDD VAnalog Input Impedance 2500 ohmsDigital Output Source Current 0.5 mADigital Output Sink Current 1mAReference Crystal Accuracy ±200 ppmSerial Port Data Rate 9.6 kb/sInternal Power Supply Input Voltage Range 3.1 14.0 VdcExternal Power Supply Voltage Range VDD 2.85 3.7 VdcExternal Power Supply Voltage Ripple 10 mVP-POperating Ambient Temperature Range TA-40 +85 oC916.50 MHzTransceiverModule
DM2100 Theory of OperationThe major components of the DM2100 include theTR1000 ASH transceiver and the Texas InstrumentsMSP430F148 microcontroller. The TR1000 operates on916.5 MHz, with a nominal output power of 1 mW. TheMSP430F148 operates from an internal oscillatorreferenced to an external 32.768 kHz “watch” crystal.The MSP430F148 UART is used to provide a CMOSserial interface on connector J2. The microcontroller’sgeneral purpose I/O pins are also available on con-nector J2 for external monitoring or control. Each ofthese pins can be separately configured through the RFnetwork as a logic input, a logic output, or an analoginput. Note that GP0 is dedicated to measuring thevalue of the received signal strength indicator (RSSI)circuit and should always be set as an analog input.GP1 - GP7 can be used in any configuration needed bythe application. The three LEDs on the DM2100 displayRF communication activity.DM2100 operation is based on NOKOTA’s SOS-OEAV1.5 multi-mode mesh network protocol, which sup-ports data and command transfers through both the se-rial interface and the RF channel. See the SOS-OEAV1.5 Protocol User’s Guide for further details.256789104321GND VIN11 12 13 14VREN VDD TD0 TD1 TW S TCK RST CFG0CFG1CFG2CFG3 GNDJ11234567891011121314J23 VD CGRNYELREDTR 1000ASHTransceiverRSSILowVoltageResetTXM O DRXDATACNTRL1CNTRL03 VD C VoltageRegulatorD M 2100 B lock D iagramGNDGP7GP6GP5GP4GP3GP2GP1GP0/RSSIRTSCTSTXDRXDGNDM SP430F148M icrocontrollerFigure 1
DM2100 FCC CertificationThe DM2100 has been certified for operation underFCC Part 15 Rules, Section 15.249. This certificationapplies only when the DM2100 is equipped with one ofthe following RFM antennas:¼ wave antenna, RFM part number 400-1595-001helical antenna, RFM part number 500-1141-001¼ wave antenna-coax assembly, RFM part num-ber 500-1142-001WARNING: the DM2100 must be re-certified if usedwith any antennas other than the three listed above.Contact RFM for further information if your applicationrequires a special antenna configuration.When the DM2100 is run from an off-board power sup-ply (applied to J1-4), the supply voltage must be limitedto a maximum of 3.7 Vdc, and the power supply voltageripple must not exceed 10 mVP-P.FCC Labels and NoticesA clearly visible label is required on the outside of theuser’s (OEM) enclosure stating that this product con-tains a DM2100 radio module, FCC ID: TE6-DM2100A.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 (2)this device must accept any interference received, in-cluding interference that may cause undesired opera-tion.WARNING: This device operates under Part 15 of theFCC rules. Any modification to this device, not ex-pressly authorized by RF Monolithics, Inc., may voidthe user’s authority to operate this device.DM2100 ApplicationsThere are two ways to use the DM2100 in an applica-tion. The DM2100 can be used with a companion appli-cation interface board, the IM2100. The IM2100 hasprovisions for powering the DM2100 from a USB cable,an external unregulated DC supply such asa5Vdc“wall” transformer, an external regulated 3 Vdc powersupply, or an external battery. The IM2100 also pro-vides the choice of UART, RS232, RS485 (single drop)or USB for a host computer serial interface. In addition,the IM2100 includes captured-screw terminal strips forconnecting analog inputs, digital logic inputs, digitallogic outputs and form C relay outputs. Refer to theIM2100 data sheet for additional details.The DM2100 can also be integrated into the user’s ownapplication board. The DM2100 pin descriptions aregiven in the Table on pages 4 and 5. The DM2100pin-out locations are show in Figure 2, and the PCB lay-out for the mating connectors is shown in Figure 3.The operating range of the DM2100 critically dependson the antenna being located properly. When using ei-ther the 400-1595-001 or the 500-1141-001 antenna,care should be taken to keep the antenna at least 0.5inch away from the sides of its enclosure. The enclo-sure must be made from a plastic with low RF attenua-tion, such as fiberglass, PVC or ABS. For a metalenclosure, use the 500-1142-001 antenna-coax assem-bly, with the antenna mounted on the outside of the en-closure. Note that a reverse-pin SMA connector mustbe installed on the DM2100 to use this assembly.The DM2100 enclosure should be mounted so the an-tenna is at least 4 feet off the ground, and ideally 6 ormore feet off the ground.The DM2100 has an on-board regulator input on PinJ1-2. To use the on-board regulator, connect J1-3 toJ1-2 and apply a voltage to this connection of at least3.1 Vdc, but not greater than 14 Vdc, including ripplevariations. When running from the on-board regulator,up to 5 mA is available on J1-4 to operate external cir-cuitry. Any external circuitry connected to J1-4 must notinduce more that 10 mVP-P ripple on the regulated 3 Vdcat this pin.The DM2100 can also be run from an off-board regu-lated supply or a battery. In this case, connect J1-3 toground, leave J1-2 unconnected, and apply the regu-lated supply or battery input to J1-4. Note the input volt-age range for J1-4 must be in the range of 2.9 to 3.7Vdc, with no more than 10 mVP-P ripple.Only pins J1-2 and J1-3 are rated to operate from asupply voltage higher than 3.7 Vdc. Further, care mustbe taken so that analog or logic inputs applied to theDM2100 stay within the voltage range of 0 to VDD (volt-age at J1-4). Applying a voltage outside of the 0 to VDDvoltage range to an analog or logic input can damagethe DM2100.The DM2100 has current limiting protection resistors onmost of the I/O pins. These limit the current that a logicoutput can source or sink. Any DM2100 pin defined asan output should be used only to drive a high imped-ance load such as a CMOS logic input or a MOSFETtransistor.3
Pin Name DescriptionJ1-1 GND This pin is connected to ground.J1-2 VIN This pin is the input to the DM2100 on-board voltage regulator. The minimum input voltage to this pin is 3.1 V,and the maximum input to this pin is 14.0 V.J1-3 VREN This pin is the enable input for the DM2100 on-board regulator. To enable the on-board regulator, connect thispin to J1-2. To disable the on-board regulator, connect this pin to ground.J1-4 VDDThis pin is connected to the DM2100 positive power supply buss. When the DM2100 is powered from theon-board regulator, this pin can provide up to 5 mA of current at 3.0 Vdc. Note this current adds to the receive,transmit and sleep currents listed in the specifications on Page 1. The external load must not impress morethan 10 mV peak -peak ripple on the supply buss. If the on-board regulator is disabled, the DM2100 can bepowered through this pin by an external 2.85 to 3.7 Vdc source (maximum ripple 10 mV peak-peak).J1-5 TD0 This pin is only used for factory programming. It must be left unconnected in normal operation.J1-6 TDI This pin is only used for factory programming. It must be left unconnected in normal operation.J1-7 TWS This pin is only used for factory programming. It must be left unconnected in normal operation.J1-8 TCK This pin is only used for factory programming. It must be left unconnected in normal operation.J1-9 RST This pin is only used for factory programming. It must be left unconnected in normal operation.J1-10 CFG0This pin is a hardware configuration input. When this pin is low, the DM2100 is placed in a low current sleepmode. When this pin is high, the DM2100 operates normally. If this pin is not driven by external logic, connect itto J1-4 (positive supply buss) for normal operation.J1-11 CFG1This pin is a hardware configuration input. When this pin is low, the DM2100 is placed in the beacon mode, andtransmits beacon packets about once every eight seconds. When this pin is high, the DM2100 operates nor-mally. If this pin is not driven by external logic, connect it to J1-4 (positive supply buss) for normal operation.J1-12 CFG2 This pin is a hardware configuration input, reserved for future use. Connect it to J1-4 (positive supply buss) fornormal operation.J1-13 CFG3 This pin is a hardware configuration input, reserved for future use. Connect it to J1-4 (positive supply buss) fornormal operation.J1-14 GND This pin is connected to ground.J2-1 GND This pin is connected to ground.J2-2 RXD This pin is the serial data input (CMOS).J2-3 TXD This pin is the serial data output (CMOS).J2-4 CTS This pin is a serial data flow control input (CMOS). Hardware flow control is required.J2-5 RTS This pin is a serial data flow control output (CMOS). Hardware flow control is required.J2-6 GP0/RSSI This pin is a general purpose I/O pin dedicated to monitoring the RSSI circuit output. It should always be config-ured as an analog-to-digital converter input. The RSSI signal can also be monitored externally at this pin.J2-7 GP1This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-8 GP2This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-9 GP3This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.4Pin Descriptions
Pin Name DescriptionJ2-10 GP4This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-11 GP5This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-12 GP6This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-13 GP7This pin is a general purpose I/O pin. The default configuration of this pin is a logic input. The configuration ofthis pin can be changed by commands through the RF channel. Other configuration options include a logic out-put, or an analog-to-digital converter input. If this pin is unused, it may be reconfigured for a logic low output tominimize current. In this case, the pin must be left unconnected.J2-14 GND This pin is connected to ground.5GNDCFG3CFG2CFG1CFG0RSTTCKTW STD1TD0VDDVRENVINGNDGNDGP7GP6GP5GP4GP3GP2GP1GP0/RSSIRTSCTSTXDRXDGNDD M 2100 Pin O utFigure 2
6Note: Specifications subject to change without notice.file: dm2100m.vp, 2005.06.21 rev1.4(35.6)1.3(33.0)1.4(35.6)0.2(5 .1 )D M 2100 Interface C onnectorPCB Layout Detail0.1(2 .5 )C onnectors are FC I Electronics 66951-Y 13 or equivalentD im ensions in inches and (m m )J1 J2Figure 3

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