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? 2015 microchip technology inc. ds50002390b-page 1 rn2903 general features on-board lorawan? protocol stack ascii command interface over uart compact form factor: 17.8 x 26.7 x 3.34 mm castellated smt pads for easy and reliable pcb mounting environmentally friendly, rohs compliant compliance: - modular certified for t he united states (fcc) and canada (ic) - australia and new zealand device firmware upgrade (dfu) over uart, see rn2903 lora ? technology module command reference users guide (ds40001811) operational single operating voltage: 2.1v to 3.6v (3.3v typical) temperature range: -40c to +85c low-power consumption programmable rf communication bit rate up to 300 kbps with fsk modulation, 12500 bps with lora ? technology modulation integrated mcu, crystal , eui-64 node identity serial eeprom, radio tr ansceiver with analog front end, matching circuitry 14 gpios for control and status rf/analog features low-power long range transceiver operating in the 915 mhz frequency band high receiver sensitivity: down to -146 dbm tx power: adjustable up to +18.5 dbm high efficiency pa fsk, gfsk, and lora technology modulation iip3 = -11 dbm up to 15 km coverage at suburban and up to 5 km coverage at urban area description microchips rn2903 low-power long range lora technology transceiver module provides an easy to use, low-power solution for long range wireless data transmission. the advanced command interface offers rapid time to market. the rn2903 module complies with the lorawan class a protocol specifications. it integrates rf, a baseband controller, command application programming interface (api) processor, making it a complete long range solution. the rn2903 module is suitable for simple long range sensor applications with external host mcu. applications automated meter reading home and building automation wireless alarm and security systems industrial monitoring and control machine to machine (m2m) internet of things (iot) low-power long range lora ? technology transceiver module downloaded from: http:///
rn2903 ds50002390b-page 2 ? 2015 microchip technology inc. table of contents 1.0 device overview .......................................................................................................................................................................... 3 2.0 general specifications ...................................................................................................... ........................................................... 6 3.0 typical hardware connections..................................................................................................................................................... 8 4.0 physical dimensions .................................................................................................................................................................... 9 5.0 application information..................................................................................................... .......................................................... 10 6.0 regulatory approval ......................................................................................................... .......................................................... 13 appendix a: revision history ................................................................................................... ............................................................ 17 the microchip web site ....................................................................................................................................................................... 19 customer change notification service ................................................................................................................................................ 19 customer support ................................................................................................................................................................................ 19 product identification system.................................................................................................. ............................................................. 21 to our valued customers it is our intention to provide our valued customers with the be st documentation possible to ensur e successful use of your micro chip products. to this end, we will continue to improve our publicatio ns to better suit your needs. our publications will be refined and enhanced as new volumes and updates are introduced. if you have any questions or comments regardi ng this publication, please contact the ma rketing communications department via e-mail at docerrors@microchip.com . we welcome your feedback. most current data sheet to obtain the most up-to-date version of this data sheet, please register at our worldwide web site at: http://www.microchip.com you can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page . the last character of the literature number is the vers ion number, (e.g., ds30000000a is version a of document ds30000000). errata an errata sheet, describing minor operational differences fr om the data sheet and recommended workarounds, may exist for curren t devices. as device/documentation is sues become known to us, we will publish an er rata sheet. the errata will specify the revisi on of silicon and revision of document to which it applies. to determine if an errata sheet exists for a particu lar device, please check with one of the following: microchips worldwide web site; http://www.microchip.com your local microchip sales office (see last page) when contacting a sales office, please specif y which device, revision of silicon and data sheet (include literature number) you are using. customer notification system register on our web site at www.microchip.com to receive the most current information on all of our products. downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 3 rn2903 1.0 device overview the rn2903 transceiver module features lora technology rf modulation, which provides long range spread spectrum communication with high interference immunity. using lora technology modulation technique, rn2903 can achieve a receiver sensitivity of -146 dbm. the high sensitivity combined with the integrated +18.5 dbm output power amplifier yields industry leading link budget, which makes it optimal for applications requiring extended range and robustness. figure 1-1: rn2903 top view lora technology modulation also provides significant advantages in both blocking and selectivity compared to the conventional modulation techniques, solving the traditional design compromise between extended range, interference immunity, and low-power consumption. the rn2903 module delivers exceptional phase noise, selectivity, receiver linearity, and iip3 for significantly lower power consumption. the level of conductive harmonics is below -70 dbm. figure 1-1 , figure 1-2 , and figure 1-3 show the top view, the pinout, and the block diagram of the module. figure 1-2: rn29 03 pin diagram figure 1-3: rn2903 block diagram 1 gnd 2 uart_rts 3 uart_cts 4 reserved 5 reserved 6 uart_tx 7 uart_rx 8 gnd gnd 9 gpio13 10 gpio12 11 gnd 20 gnd 12 vdd 13 gpio11 14 gpio10 15 nc 16 nc 17 nc 18 nc 19 nc 40 39 38 37 36 35 34 33 32 31 30 21 29 28 27 26 25 24 23 22 gnd gnd gnd gnd gnd gnd rf nc vdd gnd 47 46 45 44 43 42 41 gnd nc test0 test1 reset gpio0 gpio1 gpio2 gpio3 gpio4 gpio5 gpio6 gpio7 gpio8 gpio9 nc user hardware: status leds, 6 witches, / ogic ios, etc. rn2903 module mcu lora ? technology radio command processor 14 gpio pins real time clock lorawan tm protocol stack i 2 c spi uart 32768 hz crystal eui-64 eeprom host mcu antenna 915 mhz downloaded from: http:///
rn2903 ds50002390b-page 4 ? 2015 microchip technology inc. table 1-1 describes the pins of the module. table 1-1: pin description pin name type description 1 gnd power ground supply terminal 2 uart_rts output communication uart rts signal (1) 3 uart_cts input communication uart cts signal (1) 4 reserved do not connect 5 reserved do not connect 6 uart_tx output communication uart transmit (tx) 7 uart_rx input communication uart receive (rx) 8 gnd power ground supply terminal 9 gpio13 input/output general purpose i/o pin 10 gpio12 input/output general purpose i/o pin 11 gnd power ground supply terminal 12 vdd power positive supply terminal 13 gpio11 input/output general purpose i/o pin 14 gpio10 input/output general purpose i/o pin 15 nc not connected 16 nc not connected 17 nc not connected 18 nc not connected 19 nc not connected 20 gnd power ground supply terminal 21 gnd power ground supply terminal 22 gnd power ground supply terminal 23 rf rf analog rf signal pin 24 gnd power ground supply terminal 25 nc not connected 26 gnd power ground supply terminal 27 gnd power ground supply terminal 28 gnd power ground supply terminal 29 nc not connected 30 test0 do not connect 31 test1 do not connect 32 reset input active-low device reset input 33 gnd power ground supply terminal 34 vdd power positive supply terminal 35 gpio0 input/output general purpose i/o pin 36 gpio1 input/output general purpose i/o pin 37 gpio2 input/output general purpose i/o pin 38 gpio3 input/output general purpose i/o pin 39 gpio4 input/output general purpose i/o pin 40 gpio5 input/output general purpose i/o pin 41 gnd power ground supply terminal 42 nc not connected 43 gpio6 input/output general purpose i/o pin downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 5 rn2903 44 gpio7 input/output general purpose i/o pin 45 gpio8 input/output general purpose i/o pin 46 gpio9 input/output general purpose i/o pin 47 gnd power ground supply terminal note 1: optional handshake lines are supported in future firmware releases. table 1-1: pin description (continued) pin name type description downloaded from: http:///
rn2903 ds50002390b-page 6 ? 2015 microchip technology inc. 2.0 general specifications table 2-1 provides the general spec ifications for the module. ta b l e 2 - 2 , ta b l e 2 - 3 , and table 2-4 provide the electrical characteristics, current consumptio n, and dimensions of the module. table 2-5 shows the rf output power calibration data. table 2-1: general specifications specification description frequency band 902.000 mhz to 928.000 mhz modulation method fsk, gfsk, and lora ? technology modulation maximum over-the-air data rate 300 kbps with fsk modulation; 12500 bps with lora technology modulation rf connection board edge connection interface uart operation range up to 15 km coverage at suburban; up to 5 km coverage at urban area sensitivity at 0.1% ber -146 dbm (1) rf tx power adjustable up to max. +18.5 dbm on 915 mhz band (2) generated conductive harmonics level below -70 dbm temperature (operating) -40c to +85c temperature (storage) -40c to +115c humidity 10% ~ 90% non-condensing note 1: depends on modulation. expand spreading factor (sf). 2: tx power is adjustable. for mo re information, refer to the rn2903 lora ? technology module command reference users guide (ds40001811). table 2-2: electrical characteristics parameter min. typ. max. units supply voltage 2.1 3.6 v voltage on any pin with respect to vss (except vdd) -0.3 vdd + 0.3 v voltage on vdd with respect to vss -0.3 3.9 v input clamp current (iik) (vi < 0 or vi > vdd) +/-20 ma output camp current (iok) (vo < 0 or vo > vdd) +/-20 ma gpio sink/source cu rrent each 25/25 ma total gpio sink/source current 200/185 ma ram data retention voltage (in sl eep mode or reset state) 1.5 v vdd start voltage to ensure internal power-on reset signal 0.7 v vdd rise rate to ensure internal power-on reset signal 0.05 v/ms brown-out reset voltage 1.75 1.9 2.05 v logic input low voltage 0.15 x vdd v logic input high voltage 0.8 x vdd v input leakage at <25c (vss ? 2015 microchip technology inc. ds50002390b-page 7 rn2903 table 2-3: current consumption mode typical current at 3v (ma) idle 2.7 rx 13.5 deep sleep 0.002 table 2-4: module dimensions parameter value dimensions 17.8 x 26.7 x 3.34 mm weight 2.05g table 2-5: output power of tx power setting tx power setting output power (dbm) typical supply current at 3v (ma) 23 . 04 2 . 6 34 . 04 4 . 8 45 . 04 7 . 3 56 . 04 9 . 6 67 . 05 2 . 0 78 . 05 5 . 0 89 . 05 7 . 7 91 0 . 06 1 . 0 10 11.0 64.8 11 12.0 73.1 12 13.0 78.0 14 14.7 83.0 15 15.5 88.0 16 16.3 95.8 17 17.0 103.6 20 18.5 124.4 downloaded from: http:///
rn2903 ds50002390b-page 8 ? 2015 microchip technology inc. 3.0 typical hardware connections figure 3-1 shows the typical hardware connections. figure 3-1: hardware connections 3.1 interface to host mcu the rn2903 module has a dedicated uart interface to communicate with a host controller. optional handshake lines are supported in future firmware releases. the rn2903 lora ? technology module command reference users guide (ds40001811) provides a detailed uart command description. table 3-1 shows the default settings for the uart communication. 3.2 gpio pins (gpio0Cgpio13) the module has 14 gpio pins. these lines can be connected to switches, le ds, and relay outputs. the pins can be either logic inputs or outputs, and some pins have analog input capability that can be accessed via the module firmware. these pins have limited sink and source capabilities. electrical characteristics are described in ta b l e 2 - 2 . for more information, see rn2903 lora ? technology module command reference users guide (ds40001811). 3.3 rf connection when routing rf path, use proper strip lines with an impedance of 50 ohm. 3.4 reset pin the reset pin of the module is an active-low logic input. 3.5 power pins it is recommended to connect power pins (pin 12 and 34) to a stable supply vo ltage with sufficient source current. ta b l e 2 - 3 shows the current consumption. additional filtering capacitor s are not required but used to ensure stable supply voltage in a noisy environment. rn2903 gpios host mcu tx tx rx rx cts (1) rts rts (1) cts rfh 915 mhz band uart status leds, 6 witches, / ogic ios, etc. 14 n o t e 1 : optional handshake lines ? supported in future firmare releases. table 3-1: default uart settings specification description baud rate 57600 bps packet length 8 bit parity bit no stop bits 1 bit hardware flow control no downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 9 rn2903 4.0 physical dimensions figure 4-1 and figure 4-2 illustrate the physical dimensions and the recommended pcb layout for the rn2903 module. figure 4-1: rn2903 physical dimensions figure 4-2: recommended pcb footprint note: host pcb top layer copper traces must have solder mask to avoid shorting test pins on the bottom of the module. downloaded from: http:///
rn2903 ds50002390b-page 10 ? 2015 microchip technology inc. 5.0 application information 5.1 rf trace layout design the rn2903 modular transmitter is certified with a pcb edge sma connector and micro-strip trace layout as shown in figure 5-1 and figure 5-2 . the left side rf path is not used for this module. the host pcb can follow these trace design to maintain compliance under the modular grant (fcc) and certificate (ic). gerber files are available on the rn2903 product web page at www.microchip.com/rn2903. figure 5-1: rf trace routing (top layer) figure 5-2: rf trace routing (bottom layer) dimensions are in millimeters trace dimensions: trace width: 0.75 trace gap: 0.15 finished copper weight: 1 ounce pcb details: two layer, plated through hole fr4 thickness: 1.55 mm via stitching with 0.25 mm plated downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 11 rn2903 5.2 approved antennas modular certification of the rn2903 module is performed with the external antenna type in ta b l e 5 - 1 . for specific reg- ulatory requirements by country, refer to section 6.0 "regulatory approval" . table 5-1: tested external antenna types type gain (dbi) sleeve dipole 6 downloaded from: http:///
rn2903 ds50002390b-page 12 ? 2015 microchip technology inc. 5.3 application schematic figure 5-3 shows the schematic for the rn2903 pi ctail?/pictail plus daughter board. figure 5-3: pictail?/pictail plus daughter board schematic +3v3 current measure points +3v3_m gnd gnd gnd gnd module_rxmodule_tx module_cts module_rts +3v3_m +3v3_m gnd gnd gnd +3v3 +3v3 gnd gnd gnd gnd +3v3 +3v3 pt_module_reset +3v3 gnd gnd module_rx module_tx pt_module_cts module_cts +3v3 gnd +3v3 module_tx pt_module_cts pt_mclr module_rts module_rts gnd cur1 cur2 1 2 3 x 4 5 id d+ d- +5v gnd usb g ld1 green g ld2 green d1b0520lw-7-f 0603 0r jp1 0603 0r jp2 0603 0r jp3 0603 0r jp4 0603 0r jpi 1 gnd 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 pictail pin 2.54 mm right angle (pbc14dbdn) i 50 ohm gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 j1 socket 1.27 mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 j2 socket 1.27 mm +3v3_et1 +3v3_et2 10603 1% r1 gnd vout 4 pgd 5 en 1 g n d v out pgd e n vin 2 gnd 3,6 ic1mcp1825-3302e/dc gp0gp1 gp2 gp3 gp4 gp5 gp6 gp7 gp8 gp9 gp10gp11 gp12 gp13 pt_module_rx pt_module_rx 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 pictail plus ra2/an2/c2in+/vref- 1 ra3/an3/c1in+/vref+ 2 ra4/c1out/srq/t0cki 3 ra5/an4/c2out/srnq/hlvdin/ss 4 ra7/osc1/clki 6 ra6/osc2/clko 7 rc0/sosco/t1cki/t3cki/t3g/iocc0 8 rc1/ccp2/sosci/iocc1 9 rc2/an14/ctpls/ccp1/p1a/iocc2 10 vusb 11 d- 12 d+ 13 rc6/an18/tx/ck/iocc6 14 rc7/rx/dt/sdo/iocc7 15 vss vdd 17 rb0/an12/sri/flt0/sdi/sda/int0 18 rb1/an10/c12in3-/p1c/sck/scl/int1 19 rb2/an8/cted1/p1b/int2 20 rb3/an9/c12in2-/cted2/ccp2/sdo 21 rb4/an11/p1d/iocb4 22 rb5/an13/t1g/t3cki/iocb5 23 rb6/iocb6/pgc 24 rb7/iocb7/pgd 25 mclr/vpp/re3 26 ra0/an0/c12in0- 27 ra1/an1/c12in1- 28 ep 29 5,16 ra2 / an2 /c 2in+ /v ref - r a3/an3/ c 1in+/ v r e f+ r a4 /c 1 out / srq /t 0c ki r a5 / an4 /c 2 ou t / srn q/ h l v din /ss r a7 /osc 1 /cl ki r a6 /osc 2 /cl k o rc 0 /sosco/ t 1c ki /t 3c ki /t 3g/ i occ0 rc 1 /cc p2 /sosc i / i occ 1 rc 2 / an14 /c t pl s/cc p1 / p1a / i occ2 vus b d - d+ rc 6 / an18 / t x /c k / i occ 6 rc 7 / rx / dt /s d o/ i occ 7 v ss vdd rb0 / an12 /s ri / f l t 0/s di /s da / in t 0 rb1 / an10 /c 12in3- / p1 c/sc k /scl / in t 1 r b2 / an8 /c t e d 1 / p1b / in t 2 r b3 / an9 / c12in2- / ct e d2 / ccp2 / sd o r b4 / an11 / p1d / i oc b 4 rb5 / an13 / t 1g/ t 3c ki / i oc b 5 r b6 / i oc b6 / p gc rb7 / i oc b7 / p gd m c l r/ vpp / r e 3 r a0 / an0 /c 12in0- r a1 / an1 / c12in1- e p ic2pic18lf25k50-i/ml module_rxmodule_tx module_cts module_rts gnd +3v3 gnd ic2_icsp_mclr ic2_icsp_pgd ic2_icsp_pgc module_reset gnd jp_rst pt+_sense pt+_sense ic2_mclr insert a short on this jumper to keep ic2 in reset state gnd usb_d+ usb_d- 25v0603 100nf c4 25v0603 470nf c2 25v0603 1uf c1 25v0603 1uf c3 6.3v0603 10uf c5 50v0603 10nf c6 6.3v0603 4.7uf c8 4.7k0603 1% r8 2200603 1% r9 2200603 1% r10 2200603 1% r4 2200603 1% r5 2200603 1% r6 +5v_usb usb_det +5v_d 1.5k0603 1% r2 1000603 1% r7 2.7k0603 1% r3 1 2 3 4 5 6 icsp_ic2pin 2.54 mm 1 2 3 4 5 6 test pin 2.54 mm right angle gnd +3v3 +3v3 while plugged in pictail plus socket rfhsma gnd 1 uart_rts 2 uart_cts 3 reserved 4 reserved 5 uart_tx 6 uart_rx 7 gnd 8 gnd 11 vdd 12 nc 15 nc 16 nc 17 nc 18 nc 19 gnd 20 gnd 21 gnd 22 rf 23 gnd 24 nc 25 gnd 26 gnd 27 gnd 28 nc 29 test0 30 test1 31 reset 32 gnd 33 vdd 34 gpio0 35 gnd 41 nc 42 gnd 47 g n d ua rt _ rt s u art _ ct s re se rve d re se rv e d ua rt _ t x ua rt _ rx g n d g n d vdd n c n c n c n c n c g n d g n d g n d r f g n d n c g n d g n d g n d n c t e st 0 t e st 1 re s e t g n d vdd g pi o 0 g n d n c g n d gpio1 36 gpio2 37 gpio3 38 gpio4 39 gpio5 40 gpio6 43 gpio7 44 gpio8 45 gpio9 46 gpio11 13 gpio10 14 gpio12 10 gpio13 9 u1rn2903 note: shaded components are not populated by default. downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 13 rn2903 6.0 regulatory approval this section outlines the regulatory information for the rn2903 module for the following countries: united states canada australia new zealand 6.1 united states he rn2903 module has received federal communications commission (fcc) cfr47 telecommunications, part 15 subpart c intentional radiators modular approval in accordance with part 15.212 modular transmitter approval. modular approval allows the end user to integrate the rn2903 module into a finished product without obtaining subsequent and separate fcc approvals for intentional radiation, provided no changes or modifications are made to the module circuitry. changes or modifications could void the user's authority to operate the equipment. the end user must comply with all of the instructions provided by the grantee, which indicate in stallation and/or operating conditions necessary for compliance. the finished product is required to comply with all applicable fcc equipment au thorizations regulations, requirements and equipment functions not associated with the transmitter module portion. for example, compliance must be demonstrated to regulations for other transmitter components within the host product; to requirements for unint entional radiators (part 15 subpart b unintentional radiators), such as digital devices, computer peripherals , radio receivers, etc.; and to additional authorization requirements for the non-transmitter functions on the transmitter module (i.e., verification, or declaration of conformity) (e.g., transmitter modules may also contain digital logic functions) as appropriate. 6.1.1 labeling and user information requirements the rn2903 module has been labeled with its own fcc id number, and if the fcc id is not visible when the module is installed inside another device, then the outside of the finished product into which the module is installed must also display a label referring to the enclosed module. this exterior label can use wording as follows: a user's manual for the finished product should include the following statement: additional information on labeling and user information requirements for part 15 devices can be found in kdb publication 784748 available at the fcc office of engineering and technology (oet) laboratory division knowledge database (kdb) https://apps.fcc.gov/ oetcf/kdb/index.cfm. contains transmitter module fcc id: t9jrn2903 or contains fcc id: t9jrn2903 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, including interference that may cause undesired operation. 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 fre- quency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. however, there is no guarantee that interference will not occur in a particular installation. 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 follow- ing measures: reorient or relocate the receiving antenna. increase the separation between the equipment and receiver. connect the equipment into an outlet on a circuit different from that to which the receiver is connected. consult the dealer or an experienced radio/tv technician for help. downloaded from: http:///
rn2903 ds50002390b-page 14 ? 2015 microchip technology inc. 6.1.2 rf exposure all transmitters regulated by fcc must comply with rf exposure requirements. kdb 447498 general rf exposure guidance provides guidance in determining whether proposed or existing transmitting facilities, operations or devices comply with limits for human exposure to radio frequency (rf) fields adopted by the federal communications commission (fcc). from the rn2903 fcc grant: output power listed is conducted. this grant is valid only when the module is sold to oem integrators and must be installed by the oem or oem integrators. this transmitter is restricted for use with the specific antenna(s) tested in this application for cert ification and must not be co-located or operating in conjuncti on with any other antenna or transmitters within a host device, except in accordance with fcc multi-transmitter product procedures. 6.1.3 approved ext ernal antenna types to maintain modular approval in the united states, only the antenna types that have been tested shall be used. it is permissible to use different antenna manufacturer provided the same antenna type and antenna gain (equal to or less than) is used. testing of the rn2903 module was performed with the antenna types listed in ta b l e 5 - 1 te s t e d e x t e r n a l antenna types. 6.1.4 helpful web sites federal communications commission (fcc): http://www.fcc.gov fcc office of engineering and technology (oet) laboratory division knowledge database (kdb): https://apps.fcc.gov/ oetcf/kdb/index.cfm 6.2 canada the rn2903 module has been certified for use in canada under industry can ada (ic) radio standards specification (rss) rss-210 and rss-gen. modular approval permits the installation of a module in a host device without the need to recertify the device. 6.2.1 labeling and user information requirements labeling requirements for the host device (from section 3.2.1, rss-gen, issue 3, december 2010): the host device shall be properly labeled to identify the module within the host device. the industry canada certification label of a module shall be clearly visible at all times when installed in the host device, otherwise the host device must be labeled to display the industry canada certification number of the module, preceded by the words contains transmitter module, or the word contains, or similar wording expressing the same meaning, as follows: user manual notice for license-exempt radio apparatus (from section 7.1.3 rss-gen, issue 3, december 2010): user manuals for license-exempt radio apparatus shall contain the following or equivalent notice in a conspicuous location in the user manual or alternatively on the device or both: transmitter antenna (from section 7.1.2 rss-gen, issue 3, december 2010): user manuals for transmitters shall display the following notice in a conspicuous location: the above notice may be affixed to the device instead of displayed in the user manual. contains transmitter module ic: 6514a-rn2903. this device complies with industry canada license- 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, includi ng interference that may cause undesired operation of the device. le prsent appareil est conforme aux cnr d'indus- trie canada applicables aux appareils radio exempts de licence. l'exploitation est autorise aux deux con- ditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilis ateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. under industry canada regulations, this radio trans- mitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the trans- mitter by industry canada. to reduce potential radio interference to other user s, the antenna type and its gain should be so chosen that the equiv alent isotrop- ically radiated power (e.i.r.p.) is not more than that necessary for successful communication. conformment la rglem entation d'industrie can- ada, le prsent metteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou infrieur) approuv pour l'metteur par industrie can- ada. dans le but de rduire les risques de brouillage radiolectrique l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonne quivalente (p.i.r.e.) ne dpasse pas l'intensit ncessaire l'tablisse- ment d'une communic ation satisfaisante. downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 15 rn2903 user manuals for transmitters equipped with detachable antennas shall also contain the following notice in a conspicuous location: immediately following the above notice, the manufacturer shall provide a list of all antenna types approved for use with the transmitter, indicating the maximum permissible antenna gain (in dbi) and required impedance for each. 6.2.2 approved external antenna types transmitter antenna (fro m section 7.1.2 rss-gen, issue 3, december 2010): the rn2903 module can only be sold or operated with antennas with which it was approved. transmitter may be approved with multiple antenna types. an antenna type comprises antennas having similar in-band and out-of-band radiation patterns. testing shall be performed using the highest gain antenna of each combination of transmitter and antenna type for which approval is being sought, with the transmitter output power set at the maximum level. any antenna of the same type having equal or lesser gain as an antenna that had been successfully tested with the transmitter, will also be considered approved with the transmitter, and may be used and market ed with the transmitter. when a measurement at the antenna connector is used to determine rf output power, the effective gain of the device's antenna s hall be stated, based on measurement or on data from the antenna manufacturer. for transmitters of output power greater than 10 milliwatts, the total antenna gain shall be added to the measured rf output power to demonstrate compliance to the specified radiated power limits. testing of the rn2903 module was performed with the antenna types listed in ta b l e 5 - 1 te s t e d e x t e r n a l antenna types. 6.2.3 helpful web sites industry canada: http://www.ic.gc.ca/ 6.3 australia rn2903 module rf transmitter test reports can be used in part to demonstrate compliance in accordance with acma radio communications "short range devices" standard 2004 (the short range devices standard calls up the as/nzs 4268:2008 industry standard). the mrf89xam9a module test reports can be used as part of the product certification and compliance folder. for more information on the rf transmitter test reports, contact microchip technology australia office. as/nzs 4268:2008 refers to the usa fcc 15.247 rf standards, the frequency limits of 915 - 928 mhz apply in australia. to meet overall australian end product compliance, the integrator must construct a compliance folder containing all relevant compliance test reports e.g. rf, emc, electrical safety and doc (declaration of conformity) etc. it is the re sponsibility of the integrator to know what is required in the compliance folder for acma compliance. for more information on australia compliance, refer to the australian communications and media authority web site http://www.acma.gov.au/ . 6.3.1 helpful web sites the australian communications and media authority: http://www.acma.gov.au/ this radio transmitter (ident ify the device by certifica- tion number, or model number if category ii) has been approved by industry ca nada to operate with the antenna types listed below with the maximum permis- sible gain and required antenna impedance for each antenna type indicated. antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. conformment la rglem entation d'industrie can- ada, le prsent metteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou infrieur) approuv pour l'metteur par industrie can- ada. dans le but de rduire les risques de brouillage radiolectrique l'intention des autres utilisateurs, il faut choisir le type d'an tenne et son gain de sorte que la puissance isotrope rayonne quivalente (p.i.r.e.) ne dpasse pas l'intensit ncessaire l'tablisse- ment d'une communication satisfaisante. downloaded from: http:///
rn2903 ds50002390b-page 16 ? 2015 microchip technology inc. 6.4 new zealand rn2903 module rf transmitter test reports can be used in part to demonstrate compliance against the new zealand "general user radio license for short range devices". new zealand radio communications (radio standards) notice 2010 calls up the as / nzs 4268:2008 industry standard. the rn2903 module test reports can be used as part of the product certification and compliance folder. for more information on the rf transmitter test reports, contact microchip technology. information on the new zealand short range devices license can be found in the following web links: http://www.rsm.govt.nz/cms/licensees/types-oflicence/ general-user-licences/short-range-devices and http://www.rsm.govt.nz/a bout-rsm/spectrum-policy while the as /nzs 4268:2008 refers to the usa fcc 15.247 and en 300 220-1 v2.3.1 rf standards, the frequency limits of 921 mhz to 928 mhz apply in new zealand. to meet overall new zealand end product compliance, the developer must construct a compliance folder containing all relevant compliance test reports e.g. rf, emc, electrical safety and doc (declaration of conformity) etc. it is the re sponsibility of the developer to know what is required in the compliance folder for new zealand radio communications. for more information on new zealand compliance, refer to the web site http://www.rsm.govt.nz/. 6.4.1 helpful web sites radio spectrum ministry of economic development: http://www.rsm.govt.nz/ downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 17 rn2903 appendix a: revision history revision a (july 2015) this is the initial rele ase of this document. revision b (december 2015) this revision includes the following updates: updated deep sleep value in table 2-3 "current consumption" . updated dimensions value in table 2-4 "module dimensions" . updated figure 4-1 . updated figure 4-2 . updated figure 5-2 . updated information for section 5.1 rf trace layout design . downloaded from: http:///
rn2903 ds50002390b-page 18 ? 2015 microchip technology inc. notes: downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 19 rn2903 the microchip web site microchip provides online support via our www site at www.microchip.com . this web site is used as a means to make files and information easily available to customers. accessible by using your favorite internet browser, the web site contains the following information: product support C data sheets and errata, application notes and sample programs, design resources, users guides and hardware support documents, latest software releases and archived software general technical support C frequently asked questions (faq), technical support requests, online discussion groups, microchip consultant program member listing business of microchip C product selector and ordering guides, latest microchip press releases, listing of seminars and events, listings of microchip sales offices, distributors and factory representatives customer change notification service microchips customer notifi cation service helps keep customers current on microchip products. subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. to register, access the microchip web site at www.microchip.com . under support, click on customer change notification and follow the registration instructions. customer support users of microchip products can receive assistance through several channels: distributor or representative local sales office field application engineer (fae) technical support customers should contac t their distributor, representative or field application engineer (fae) for support. local sales offices are also available to help customers. a listing of sa les offices and locations is included in the back of this document. technical support is available through the web site at: http://microchip.com/support downloaded from: http:///
rn2903 ds50002390b-page 20 ? 2015 microchip technology inc. notes: downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 21 rn2903 product identification system to order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office . part no. i rm xxx firmware package temperature range device device: rn2903: low-power long range lora ? technology transceiver module temperature range: i=- 4 0 ? c to +85 ? c (industrial) package: rm = radio module examples: rn2903-i/rm: industrial temperature revision number downloaded from: http:///
rn2903 ds50002390b-page 22 ? 2015 microchip technology inc. notes: downloaded from: http:///
? 2015 microchip technology inc. ds50002390b-page 23 quality management s ystem certified by dnv == iso/ts 16949 == information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. it is your responsibility to ensure that your application me ets with your specifications. microchip makes no representations or warranties of any kind whether express or implied, written or oral, statutory or otherwise, related to the information, including but not limited to its condition, quality, performance, merchantability or fitness for purpose . microchip disclaims all liability arising from this information and its use. use of microchip devices in life support and/or safe ty applications is entirely at the buyers risk, and the buyer agrees to defend, indemnify and hold harmless microchip from any and all damages, claims, suits, or expenses resulting from such use. no licenses are conveyed, implicitly or ot herwise, under any microchip intellectual property rights unless otherwise stated. trademarks the microchip name and logo, th e microchip logo, dspic, flashflex, flexpwr, jukeblox, k ee l oq , k ee l oq logo, kleer, lancheck, medialb, most, most logo, mplab, optolyzer, pic, picstart, pic 32 logo, righttouch, spynic, sst, sst logo, superflash and uni/o are registered trademarks of microchip te chnology incorporated in the u.s.a. and other countries. the embedded control solutions company and mtouch are registered trademarks of microchip technology incorporated in the u.s.a. analog-for-the-digital age, bodycom, chipkit, chipkit logo, codeguard, dspicdem, dspicdem.net, ecan, in-circuit serial programming, icsp, inter-chip connectivity, kleernet, kleernet logo, miwi, motorbench, mpasm, mpf, mplab certified logo, mplib, mplink, multitrak, netdetach, omniscient code generation, picdem, picdem.net, pickit, pictail, righttouch logo, real ice, sqi, serial quad i/o, total endurance, tsharc, usbcheck, varisense, viewspan, wiperlock, wireless dna, and zena are trademarks of microchip te chnology incorporated in the u.s.a. and other countries. sqtp is a service mark of mi crochip technology incorporated in the u.s.a. silicon storage technology is a registered trademark of microchip technology inc. in other countries. gestic is a registered tradem ark of microchip technology germany ii gmbh & co. kg, a subsidiary of microchip technology inc., in other countries. all other trademarks mentioned herein are property of their respective companies. ? 2015, microchip technology incorporated, printed in the u.s.a., all rights reserved. isbn: 978-1-5224-0102-5 note the following details of the code protection feature on microchip devices: microchip products meet the specification cont ained in their particular microchip data sheet. microchip believes that its family of pr oducts is one of the most secure families of its kind on the market today, when used i n the intended manner and under normal conditions. there are dishonest and possibly illegal meth ods used to breach the code protection feature. all of these methods, to our knowledge, require using the microchip pr oducts in a manner outside the operating specif ications contained in microchips data sheets. most likely, the person doing so is engaged in theft of intellectual property. microchip is willing to work with the customer who is concerned about the integrity of their code. neither microchip nor any other semiconduc tor manufacturer can guarantee the security of their code. code protection does not mean that we are guaranteeing the product as unbreakable. code protection is constantly evolving. we at microchip are committed to continuously improving t he code protection features of our products. attempts to break microchips c ode protection feature may be a violation of the digital millennium copyright act. if such acts allow unauthorized access to your softwar e or other copyrighted work, you may have a right to sue for relief under that act. microchip received iso/ts-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in chandler and tempe, arizona; gresham, oregon and design centers in california and india. the companys quality system processes and procedures are for its pic ? mcus and dspic ? dscs, k ee l oq ? code hopping devices, serial eeproms, microperi pherals, nonvolatile memory and analog products. in addition, microchips quality system for the design and manufacture of development systems is iso 9001:2000 certified. downloaded from: http:///
ds50002390b-page 24 ? 2015 microchip technology inc. americas corporate office 2355 west chandler blvd. chandler, az 85224-6199 tel: 480-792-7200 fax: 480-792-7277 technical support: http://www.microchip.com/ support web address: www.microchip.com atlanta duluth, ga tel: 678-957-9614 fax: 678-957-1455 austin, tx tel: 512-257-3370 boston westborough, ma tel: 774-760-0087 fax: 774-760-0088 chicago itasca, il tel: 630-285-0071 fax: 630-285-0075 cleveland independence, oh tel: 216-447-0464 fax: 216-447-0643 dallas addison, tx tel: 972-818-7423 fax: 972-818-2924 detroit novi, mi tel: 248-848-4000 houston, tx tel: 281-894-5983 indianapolis noblesville, in tel: 317-773-8323 fax: 317-773-5453 los angeles mission viejo, ca tel: 949-462-9523 fax: 949-462-9608 new york, ny tel: 631-435-6000 san jose, ca tel: 408-735-9110 canada - toronto tel: 905-673-0699 fax: 905-673-6509 asia/pacific asia pacific office suites 3707-14, 37th floor tower 6, the gateway harbour city, kowloon hong kong tel: 852-2943-5100 fax: 852-2401-3431 australia - sydney tel: 61-2-9868-6733 fax: 61-2-9868-6755 china - beijing tel: 86-10-8569-7000 fax: 86-10-8528-2104 china - chengdu tel: 86-28-8665-5511 fax: 86-28-8665-7889 china - chongqing tel: 86-23-8980-9588 fax: 86-23-8980-9500 china - dongguan tel: 86-769-8702-9880 china - hangzhou tel: 86-571-8792-8115 fax: 86-571-8792-8116 china - hong kong sar tel: 852-2943-5100 fax: 852-2401-3431 china - nanjing tel: 86-25-8473-2460 fax: 86-25-8473-2470 china - qingdao tel: 86-532-8502-7355 fax: 86-532-8502-7205 china - shanghai tel: 86-21-5407-5533 fax: 86-21-5407-5066 china - shenyang tel: 86-24-2334-2829 fax: 86-24-2334-2393 china - shenzhen tel: 86-755-8864-2200 fax: 86-755-8203-1760 china - wuhan tel: 86-27-5980-5300 fax: 86-27-5980-5118 china - xian tel: 86-29-8833-7252 fax: 86-29-8833-7256 asia/pacific china - xiamen tel: 86-592-2388138 fax: 86-592-2388130 china - zhuhai tel: 86-756-3210040 fax: 86-756-3210049 india - bangalore tel: 91-80-3090-4444 fax: 91-80-3090-4123 india - new delhi tel: 91-11-4160-8631 fax: 91-11-4160-8632 india - pune tel: 91-20-3019-1500 japan - osaka tel: 81-6-6152-7160 fax: 81-6-6152-9310 japan - tokyo tel: 81-3-6880- 3770 fax: 81-3-6880-3771 korea - daegu tel: 82-53-744-4301 fax: 82-53-744-4302 korea - seoul tel: 82-2-554-7200 fax: 82-2-558-5932 or 82-2-558-5934 malaysia - kuala lumpur tel: 60-3-6201-9857 fax: 60-3-6201-9859 malaysia - penang tel: 60-4-227-8870 fax: 60-4-227-4068 philippines - manila tel: 63-2-634-9065 fax: 63-2-634-9069 singapore tel: 65-6334-8870 fax: 65-6334-8850 taiwan - hsin chu tel: 886-3-5778-366 fax: 886-3-5770-955 taiwan - kaohsiung tel: 886-7-213-7828 taiwan - taipei tel: 886-2-2508-8600 fax: 886-2-2508-0102 thailand - bangkok tel: 66-2-694-1351 fax: 66-2-694-1350 europe austria - wels tel: 43-7242-2244-39 fax: 43-7242-2244-393 denmark - copenhagen tel: 45-4450-2828 fax: 45-4485-2829 france - paris tel: 33-1-69-53-63-20 fax: 33-1-69-30-90-79 germany - dusseldorf tel: 49-2129-3766400 germany - munich tel: 49-89-627-144-0 fax: 49-89-627-144-44 germany - pforzheim tel: 49-7231-424750 italy - milan tel: 39-0331-742611 fax: 39-0331-466781 italy - venice tel: 39-049-7625286 netherlands - drunen tel: 31-416-690399 fax: 31-416-690340 poland - warsaw tel: 48-22-3325737 spain - madrid tel: 34-91-708-08-90 fax: 34-91-708-08-91 sweden - stockholm tel: 46-8-5090-4654 uk - wokingham tel: 44-118-921-5800 fax: 44-118-921-5820 worldwide sales and service 07/14/15 downloaded from: http:///

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