Murata Electronics North America CM2202N Remote Data Transmitter User Manual CM2202 vp

Murata Electronics North America Remote Data Transmitter CM2202 vp

User Manual

1®CM2202NRating Value UnitsAll In put/Out put Pins -0.3 to +4.0 VNon-Operating Am bi ent Tem per a ture Range -40 to +85 oCAb so lute Max i mum Rat ingsCus tomElec tri cal Char ac ter is ticsCharacteristic Sym Notes Minimum Typical Maximum UnitsOp er ating Fre quency fO916.30 916.70 MHzMod u la tion Type OOK En coded Data RF Trans mis sion Rate 4.8 kb/sPeak Radiated Field Strength (FCC OP-1) EO20,000 µV/mBat tery BR1225Dig i tal In put Logic High (Sen sor) .85 VDD VDD VDig i tal In put Logic Low (Sen sor) 0.15 VDD VOp er ating Am bi ent Tem per a ture Range TA-20 +70 oC916.50 MHz TransmitterModuleThe CM2202N is a 916.5 MHz trans mit ter mod ule de signed to mon i tor in dus trial alarmsen sors. Com mu ni ca tion range in an “open field” en vi ron ment is typ i cally 100 me ters.The CM2202N com bines RFM’s very low-cur rent SAW res o na tor sta bi lized trans mit tertech nol ogy with low-power microcontroller tech nol ogy to achieve long bat tery life. Themod ule is com pat i ble with RFM’s miniMESHTM net work pro to col, which pro vides add-on“plug-and-play” multicast mesh net work rout ing. The CM2202N is cer ti fied for op er a tionun der FCC 15.249 reg u la tions.•In te grated Sen sor In ter face•Very Low Cur rent Op er a tion from 2 BR1225 Bat teries•Com pat i ble with RFM miniMESHTM Net work Pro to col•Ready-to-Use Mod ule
2The ory of Op er a tionThe ma jor com po nents of the CM2202N in clude anRFM SAW res o na tor sta bi lized trans mit ter and aMicro chip PIC12F635 microcontroller. The trans mit terop er ates on a fre quency of 916.5 MHz, at a nom i nalout put power of 0.5 mW. The microcontroller gen er -ates “heart beat” trans mis sions pe ri od i cally, plus anim me di ate trans mis sion in the event of a sen sor alarm or test but ton ac ti va tion. The CM2202N is pow ered by2 re place able 3 V BR1225 lith ium “coin cell” bat tery.The CM2202N is com pat i ble with RFM’s miniMESHTMnet work pro to col, which pro vides add-on “plug-and-play” multicast mesh net work rout ing to im prove com -mu ni ca tion range and ro bust ness.FCC La bels and No ticesThis de vice com plies with Part 15 of the FCC rules. Op er a tion is sub ject to the fol low ing two con di tions: (1) this de vice may not cause harm ful in ter fer ence,and (2) this de vice must ac cept any in ter fer ence re -ceived, in clud ing in ter fer ence that may cause un de -sired op er a tion.A clearly vis i ble la bel is re quired on the out side of theuser’s (OEM) en clo sure stat ing that this prod uct con -tains a CM2202N ra dio mod ule, FCC ID: TE6-CM2202N.WARNING: This de vice op er ates un der Part 15 of the FCC rules. Any mod i fi ca tion to this de vice, not ex-pressly au tho rized by RF Monolithics, Inc., may voidthe user’s au thor ity to op er ate this de vice.++TestButtonSAWResonatorCM2202N Sensor Transmitter Block DiagramPower Su pply is 23VBR1225 "CoinCell"BatteriesTuningJ2-2J2-3J2-1J2-5J2-4Figure 1
Pin Name DescriptionJ2-1 GND This pad is the ground return for the ex ter nal alarm sen sor.J2-2 SENSOR This pad is a logic in put driven by the ex ter nal alarm sen sor.J2-3 SNR Power This pad is the +3V power supply for the ex ter nal alarm sen sor.J2-4 Pclk This pad is used to pro gram the microcontroller. No con nec tion should be made to it in nor mal op er a tion.J2-5 VDD This pad is used to pro gram the microcontroller. No con nec tion should be made to it in nor mal op er a tion.3Pin and Pad De scrip tions
4Figure 2Note 1: La ser mark on shield top with FCC ID and made in Phil ip pines.Note 2: Place la bel with bar code and al pha nu meric se rial num ber.Note 3: Place la bel with bat tery ori en ta tion. Note: Spec i fi ca tions sub ject to change with out no tice.file: CM2202.vp, 031006 rev

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