rn-41-sm / RN-42-SM www.rovingnetworks.com rn-41sm-ds 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com class 1 / class 2 bluetooth? socket module features ? socket module with uart interface ? 3.3/5v logic cmos i/o (rs-232 as well) ? fully qualified bluetooth 2.1/2.0/1.2/1.1 module ? bluetooth v2.1+edr support ? low power (8-30ma connected, 2ma idle) ? uart supports baud rates from 1200 to 3mbit ? sustained spp data rates - 240kbps (slave), 300kbps (master) ? hci data rates - 1.5mbps sustained, 3.0mbps burst in hci mode ? hci mode, or spp/dun software stacks available. ? embedded bluetooth stack profiles included (requires no host stack ): gap, sdp, rfcomm and l2cap, with spp, dun and hid profiles. ? rs232 on board with power enable on io pin. ? bluetooth sig qualified, end product listing ? class 1 high power amplifier (rn-41-sm only) with on board ceramic rf chip antenna. o certifications: fcc, ics, ce o environmentally friendly, rohs compliant applications ? cable replacement ? barcode scanners ? measurement and monitoring systems ? industrial sensors and controls ? medical devices ? asset tacking description the rn-41-sm / RN-42-SM is a though hole, low power and highly flexible bluetooth socket module . this module supports spp/dun and hci bluetooth interface protocols, is simple to design in and ful ly certified. with its high performance on chip anten na and support for bluetooth? enhanced data rate (edr), the rn-41 / rn-42 delivers up to 3 mbps data rate for distances to 100m / 20m. the rn-41/rn-42 socket module is the perfect method for adding bluetooth wireless capability to existing products without redesign, saving you significant time and money. block diagram csr bluecore-04 external balun pa rf switch crystal flash memory gnd vcc usb uart pcm pio6 pio5 pio4
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 2 ~ overview ? baud rate speeds: 1200bps up to 921kbps, non-stand ard baud rates can be programmed. ? rn-41: class 1 radio, 330? (100m) distance, 12dbm output transmitter, -80dbm typical receive sensitiv ity ? rn-42: class 2 radio, 60? (20m) distance, 4dbm out put transmitter, -80dbm typical receive sensitivity ? frequency 2402 ~ 2480mhz, ? fhss/gfsk modulation, 79 channels at 1mhz interval s ? secure communications, 128 bit encryption ? error correction for guaranteed packet delivery ? uart local and over-the-air rf configuration ? auto-discovery/pairing requires no software config uration (instant cable replacement). ? auto-connect master, io pin (dtr) and character ba sed trigger modes environmental conditions parameter value temperature range (operating) -40 o c ~ 85 o c temperature range (storage) -40 o c ~ 85 o c relative humidity (operating) 90% relative humidity (storage) 90% electrical characteristics (rn-41-sm) parameter min typ. max. unit supply voltage (dc) 3.0 3.3 3 .3v on header a, 16v on header b v rx supply current 35 60 ma tx supply current 65 85 ma average power consumption standby/idle (default settings) 25 ma connected (normal mode) 30 ma connected (low power sniff) 8 ma standby/idle (deep sleep enabled) 250ua 2.5 ma electrical characteristics (RN-42-SM) parameter min typ. max. unit supply voltage (dc) 3.0 3.3 3 .3v on header a, 16v on header b v average power consumption radio on* (discovery or inquiry window time) 40 ma connected idle (no sniff) 25 ma connected idle (sniff 100 milli secs) 12 ma connected with data transfer 40 45 50 ma deep sleep idle mode 26 ua
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 3 ~ radio characteristics (rn-41) parameter freq. (ghz) min typ max bluetooth specification units sensitivity @ 0.1%ber 2.402 - -80 -86 -70 dbm 2.441 - -80 -86 dbm 2.480 - -80 -86 dbm rf transmit power 2.402 15.0 16.0 15 dbm 2.441 15.0 16.0 dbm 2.480 15.0 16.0 dbm initial carrier frequency tolerance 2.402 - 5 75 75 khz 2.441 - 5 75 khz 2.480 - 5 75 khz 20db bandwidth for modulated carrier - 900 1000 1000 khz drift (five slots packet) - 15 - 40 khz drift rate - 13 - 20 khz f1 avg max modulation 2.402 140 165 175 >140 khz 2.441 140 165 175 khz 2.480 140 165 175 khz f2 avg min modulation 2.402 140 190 - 115 khz 2.441 140 190 - khz 2.480 140 190 - khz radio characteristics (rn-42) parameter freq. (ghz) min typ max bluetooth specification units sensitivity @ 0.1%ber 2.402 - -80 -86 -70 dbm 2.441 - -80 -86 dbm 2.480 - -80 -86 dbm rf transmit power 2.402 0 2 4 4 dbm 2.441 0 2 4 dbm 2.480 0 2 4 dbm initial carrier frequency tolerance 2.402 - 5 75 75 khz 2.441 - 5 75 khz 2.480 - 5 75 khz 20db bandwidth for modulated carrier - 900 1000 1000 khz drift (five slots packet) - 15 - 40 khz drift rate - 13 - 20 khz f1 avg max modulation 2.402 140 165 175 >140 khz 2.441 140 165 175 khz 2.480 140 165 175 khz f2 avg min modulation 2.402 140 190 - 115 khz 2.441 140 190 - khz 2.480 140 190 - khz
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 4 ~ pin description note: the rn-41 and the rn-42 are pin and functiona lly compatible. signals on header a except pins 4, 5, 6 and 7 have the following logic levels. input logic level low is from -0.4 v to 0.8 v, inp ut high is from 2.1 to 3.4v. output logic level low max is 0.2 and output high i s minimum is 2.8. all i/o?s except reset default to weak pull down. header a pin name description default state 1 pio6 set bt master (high=auto-master mode) input with weak pulldown 2 pio7 set baud rate (high = force 9600, low = 11 5k or firmware setting) input with weak pulldown 3 reset active low reset input to rn41 with 1k pull up 4 rx rs232 receive input (see note below) 5 tx rs232 transmit output (see note below) 6 rts rs232 rts (see note below) 7 cts rs232 cts (see note below) 8 vb2 analog battery monitor signal (not currently supported in firmware) no connect 9 shut down shuts down power to the entire module. active low 10 prs rs232 power short to pin 11 vcc to enable rs232 11 vcc 3.3 3.3v regulated power input 12 gnd ground header a 1 2 3 4 5 6 7 8 9 10 11 12 header a 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 header b 3/5v ttl signaling 5-16 vdc power rn-41-sm/ RN-42-SM top view
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 5 ~ 13 vb1 analog battery monitor signal no connect 14 pio8 status (rf data rx/tx) output 15 pio9 io input with weak pulldown 16 pio10 io (remote dtr signal) input with weak p ulldown 17 pio11 io (remote rts signal ) input with weak pulldown 18 rxdb uart receive input 19 txdb uart transmit output 20 rtsb uart rts, goes high to disable host transmi tter output 21 ctsb uart cts, if set high, disables tx transm itter input 22 pio2 status, high when connected, low otherwise output from rn41 23 pio3 auto discovery = high input t with weak pul ldown 24 pio4 set factory defaults input with weak pulld own note: when connecting to the rs232 signals on heade r a: you must connect pin 10 (prs) to pin 11 (vcc). this powers the rs232 chip. also make sure that r6 and r8 are installed (default condition). header b 1 rx receive uart input to module 2 tx transmit uart output from module 3 rts rts uart, goes high to disable host transmitt er 4 cts cts uart, if set high, disables transmitter tie to rts if not driven 5 vdd 5-16 vdc 6 gnd ground note: to use header b you must remove resistors r6 and r8. removing these resistors disconnects the rx (header a pin 4) and cts (header a pin 7) si gnals from the rs232 chip. r6 r8
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 6 ~ jumper settings the bank of headers on the top of the module contro l pio4, pio5, pio6 and pio7 and correspond directly to the external switches on the firefly bluetooth serial adapter. default baudrate off = 115k (can be overridden by software baud rat e configuration command), on = 9600 (ignores software baudrate configuration) auto discovery in slave mode, sets a special class of device that is used the master to auto connect. if switch 3 also on, the device performs a search, sto res, and connects to a remote slave which has this switch 2 set. auto master device acts as bluetooth master, auto-connects to a stored remote address. first set the bluetooth address of the slave device using the sr command or through instant cable replacement settings. restore factory defaults set this switch on, power up unit, and toggle the switch from on to off 3 times to return the unit to factory settings. status leds the green led indicates the status of the bluetooth connection and when the device is in configuration mode. mode green led red led fast, 10 x per second in configuration mode 2 times per second boot up, remote configurable 1 time per second discoverable/idle data over the u art on solid connected default baudrate auto master auto discovery factory reset
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 7 ~ hardware connections and power placing 3.3vdc into the pio?s outputs will permanen tly damage the radio modules. the failure mode is short across gnd and vcc. use a 10k resistor in series or a 10k pull up resistor for input and output pio?s respectively. ? make sure to connect a common ground when using th e external tx, rx inputs 0 ? 3.3vdc. ? for a 3 wire db-9 interface (tx, rx, gnd only) con nect/short cts to rts, factory default is hardware flow control enabled cts and rts connected. ? when using a 5.0vdc input, pio?s require a voltage divider. a good choice is 10k ohm series with 20k to ground. pio?s are 0-3.3vdc not 5 volt tolerant. hardware communications connections for modules rn-41-sm / RN-42-SM tx rx of the application micro controller unit (mcu) rn-41-sm / RN-42-SM rx ? ?? ? tx of the application micro controller unit (mcu) rn-41-sm / RN-42-SM rts cts of the application micro controller unit (mcu) rn-41-sm / RN-42-SM cts ? ?? ? rts of the application micro controller unit (mcu)
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 8 ~ mechanical dimensions 0.850 0.080 rn-41-sm / rn- top view hole dia. 0.035 pad dia. 0.060 0.050 0.050 0.200 0.080 0.100 0. 200 1.230 1.300 0.820 0.080 0. 900 hole dia. 0.032 pad dia. 0.050 hole dia. 0.100
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 9 ~ design concerns 1. reset circuit . rn-41-sm / RN-42-SM contains a 1k pullup to vcc , the polarity of reset on the rn-41 / rn-42 is active low. a power on reset circuit with delay is optional on the reset pin of the module. it should only be required if the input power supply has a very slow ramp, or tends to bounce or have instability on pow er up. use microcontroller gpio to control reset once power is stable. also can be driven from low cost power s upervisor chips available, such as mcp809, mcp102/121, and to rex xc61f. 2. factory reset pio4. connect this pin to a switch, or jumper, or resisto r for access. can be used to reset the module to factory defaults and is often critical in situations where the module has been mis-configure d. to set factory defaults: set pin high, apply power, t hen toggle 4 times. 3. connection status. pio2 is an output which directly reflects the conne ction state, it goes high when connected, and low otherwise. 4. hci mode. the rn41-sm module must be loaded with special fi rmware to run in hci mode. when in hci mode the standard spp/dun applications are disabled. 5. shutdown mode. pin 9 shutdown has a pullup to 3.3v. if you pull this pin low it shuts down the on board regulator putting the module in micropower mode. sh utdown also turns off the power to the rs-232 chip so you can hook the module to a battery and a remote micro controller like a pic you can go super low power, w ake up connect send data go to sleep. 6. minimizing radio interference the areas under the antenna should not have surface traces, gnd planes, or exposed vias,or metal enclosures for optimal radio performance the antenna compliance information category country standard radio usa fcc cfr47 part 15 c, para 15.247 fcc id: t9j-r41-1 europe en 300 328-1 en 300 328-2 2.4ghz canada ic rss-210 low power comm. device ic canada id: 6514a-rn411 emc usa fcc cfr47 part 15 subclass b europe en 55022 class b radiated en61000-4-2 esd immunity en61000-4-3 radiated field en61000-4-6 rf immunity en61000-4-8 power magnetic immunity bluetooth listed b013180 environmental rohs rohs compliant
rn-41-sm/RN-42-SM data sheet www.rovingnetworks.com 7/12/2010 809 university avenue ? los gatos, ca 95032 ? tel (408) 395-6539 ? info@rovingnetworks.com ~ 10 ~ ordering information part number description rn-41-sm socket module with rn-41 (class 1), no headers inst alled. standard 3/5 v uart and rs232 interface, firmware (spp/dun master and slave) RN-42-SM socket module with rn-42 (class 2), no headers inst alled. standard 3/5 v uart and rs232 interface, firmware (spp/dun master and slave) for other configurations, contact roving networks d irectly. visit http://www.rovingnetworks.com/buynow.php for current pricing and a list of distributors car rying our products. copyright ? 2009 roving networks. all rights reserv ed. the bluetooth trademark and logo are registered tra demarks and are owned by the bluetooth sig, inc. al l other trademarks are property of their respective owners. roving networks reserves the right to make correcti ons, modifications, and other changes to its produc ts, documentation and services at any time. customers s hould obtain the latest relevant information before placing orders and should verify that such information is c urrent and complete. roving networks assumes no liability for applicatio ns assistance or customer product design. customers are responsible for their products and applications usi ng roving networks components. to minimize the risk s associated with customer products and applications, customers should provide adequate design and operating safegu ards. roving networks products are not authorized for use in safety-critical applications (such as life supp ort) where a failure of the roving networks product would reason ably be expected to cause severe personal injury or death, unless officers of the parties have executed an agr eement specifically governing such use.
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