Murata Electronics North America CM2201N TRANSCEIVER MODULE User Manual cm2201d vp

Murata Electronics North America TRANSCEIVER MODULE cm2201d vp

USERS MANUAL

1®CM2201NRating Value UnitsAll Input/Output Pins -0.3 to +4.0 VNon-Operating Ambient Temperature Range -50 to +100 oCAbsolute Maximum RatingsCustomElectrical CharacteristicsCharacteristic Sym Notes Minimum Typical Maximum UnitsOperating Frequency fO916.30 916.70 MHzModulation Type OOKEncoded Data RF Transmission Rate 4.8 kb/sPeak Radiated Field Strength (FCC OP-1) EO20,000 µV/mBattery CR2032Digital Input Logic High (Sensor) 2.4 VDD VDigital Input Logic Low (Sensor) 0 0.45 VOperating Ambient Temperature Range TA-40 +85 oC916.50 MHzTransmitterModuleThe CM2201N is a 916.5 MHz transmitter module designed to monitor industrial alarmsensors. Communication range in an “open field” environment is typically 100 meters.The CM2201N combines RFM’s very low-current SAW resonator stabilized transmittertechnology with low-power microcontroller technology to achieve long battery life. Themodule is compatible with RFM’s miniMESHTM network protocol, which provides add-on“plug-and-play” multicast mesh network routing. The CM2201N is certified for operationunder FCC 15.249 regulations.•Integrated Sensor Interface•Very Low Current Operation from a CR2032 Battery•Compatible with RFM miniMESHTM Network Protocol•Ready-to-Use Module
2Theory of OperationThe major components of the CM2201N include anRFM SAW resonator stabilized transmitter and aMicrochip PIC12F200 microcontroller. The transmitteroperates on a frequency of 916.5 MHz, at a nominaloutput power of 0.5 mW. The microcontroller gener-ates “heart beat” transmissions periodically, plus animmediate transmission in the event of a sensor alarmor test button activation. The CM2201N is powered bya replaceable 3 V CR2032 lithium “coin cell” battery.The CM2201N is compatible with RFM’s miniMESHTMnetwork protocol, which provides add-on “plug-and-play” multicast mesh network routing to improve com-munication range and robustness.FCC Labels and NoticesThis 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 re-ceived, including interference that may cause unde-sired operation.A clearly visible label is required on the outside of theuser’s (OEM) enclosure stating that this product con-tains a CM2205 radio module, FCC ID: TE6-CM2201N.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.++Test ButtonSAWResonatorM icrocontrollerC M 2201N Sensor Transm itter B lock D iagramPow er Supply is a 3 VC R 2032 "C oin C ell"B a tte ryJ2-2J2-1J2-3SNR PW RSENSORGNDTuningFigure 1
Pin Name DescriptionJ2-1 SNR PWR This pad is the +3 V power supply for the external alarm sensor.J2-2 SENSOR This pad is a logic input driven by the external alarm sensor.J2-3 GND This pad is the ground return for the external alarm sensor.J3-1 VPP This pad is used to program the microcontroller. No connection should be made to it in normal operation.J3-2 VDD This pad is used to program the microcontroller. No connection should be made to it in normal operation.J3-3 GND This pad is used to program the microcontroller. No connection should be made to it in normal operation.J3-4 PGD This pad is used to program the microcontroller. No connection should be made to it in normal operation.J3-5 PGC This pad is used to program the microcontroller. No connection should be made to it in normal operation.3Pin and Pad Descriptions
4CM 2201 Top ViewGNDSENSO RSNR PW RVPPVDDGNDPGDPGCJ2J3Figure 2Note: Specifications subject to change without notice.file: CM2201Nd.vp, 2005.10.18 rev

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