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artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 1 of 23 (905) 479-0148 http://www.artaflexmodules.com hardware design guide for artaflex wireless modules for models: awp24s aws24s awp24u awac24u awa24s aw24mchl-sm AW24MCHL-H2 aw24mufl-sm document: an-121-0001 written by: kashif ahmed date: sept 18,2009
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 2 of 23 (905) 479-0148 http://www.artaflexmodules.com contents 1.0 introduction ................................... ................................................... ................................. 3 2.0 main features .................................. ................................................... .............................. 3 3.0 module types................................... ................................................... .............................. 4 4.0 mechanical dimensions.......................... ................................................... ........................ 5 5.0 design guidelines 5.1 pcb design .............................. ................................................... ............................... 5 5.2 module placement strategy............... ................................................... .................... 15 5.3 external antenna applications........... ................................................... .................... 20 6.0 smt assembly guidelines for aw24mchl-sm ........ ................................................... ... 21
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 3 of 23 (905) 479-0148 http://www.artaflexmodules.com 1. introduction this document provides information on designing art aflex wireless modules into products that require 2.4 ghz ism band wireless dat a transmission. a brief description is provided for all the modules to aid in assisting the designer on selecting the right model for the design. for more detailed information , please refer to engineering datasheets or contact artaflex technical sales/supp ort. to ensure optimal rf performance, suggested design guidelines are provided for placement on pcb. information on mating connectors on host board, solder reflow temperature profiles for assembly and reworking inf ormation are also provided. manufacturing are also provided. artaflex wireless modules operate in the 2.4 ghz is m band. the falcon series modules are based on cypress semiconductor cyfi chi pset and offer seamless compliance to the cyfi protocol. the modules are lo w power with transmitting data rates up to 1mb/s and operating range from 50 meter s for embedded antenna devices to 1 kilometer for devices equipped with a power am plifier. all modules are fcc/eu/ets/industry canada agency certified. 2. main features ? low operating current ? transmit power from 4dbm up to +21 dbm ? receive sensitivity up to C97 dbm ? sleep current <1-10 a ? operating range from 10m to 1km or more depending on model and conditions ? dsss data rates up to 250 kbps, gfsk data rate of 1 mbps ? auto transaction sequencer (ats) - no micro contro ller intervention ? framing, length, crc16, and auto ack ? fast startup and fast channel changes ? separate 16-byte transmit and receive fifos ? autorate? - dynamic data rate reception ? receive signal strength indication (rssi) ? 4-mhz spi microcontroller interface ? no proprietary software required ? serial peripheral interface (spi) control while in sleep mode ? operating voltage from 2.4 to 3.6 volts ? operating temperature from 0 to 70c ? size: as small as 15mm(l) x 13.5(w) x 1.8mm(h)
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 4 of 23 (905) 479-0148 http://www.artaflexmodules.com ? weight: 5 - 27 grams ? fcc modular approval grant to meet fcc part 15, en 300 328-1, en 301 489-1, en 301 489-7 and industry canada rss-210 standards 3. module types there are many packaging options available. the following is a list of available modules with a brief description . 1) awp24s has an integrated pcb print antenna. it is a first generation module. 2) aws24s has a co-axial u.fl connector for attaching an ext ernal antenna. it is a first generation module. 3) awp24u is a usb dongle version allowing it to plug into c omputers. 4) awa24s has a power amplifier for longest operating range 5) awac24u is a usb dongle with a power amplifier that offers longest range and a computer interface 6) AW24MCHL-H2 has a chip antenna and header connector. it is a second generation module that offers high performance in t he smallest available package. 7) aw24mchl-hr is the same as AW24MCHL-H2 but has a right angle c onnector allowing the module to be mounted perpendicular to host pcb. 8) aw24mchl-sm is a surface mount version that has the lowest pro file since there is no header connector. 9) aw24mufl has a header connector and has a u.fl connector fo r connecting an external antenna.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 5 of 23 (905) 479-0148 http://www.artaflexmodules.com 4. mechanical dimensions a. awp24s - integrated pcb antenna module size: 38.1 mm x 25.4 mm (1.5 x 1.0) awp24s connector pin information pin name type default description 1 gnd power gnd ground 2 vcc power vcc main supply 2.4 to 3.6 volts 3 irq i/o - interrupt output (configurable active h igh or low), or gpio 4 rst input input module reset. internal on chip 10 k-ohm pull-down resistor. active high 5 mosi i/o input spi data input, or sdat 6 ss input pull up spi interface enable, active low 7 sck input input spi clock 8 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 9 gnd power gnd ground 10 pactl i/o nc no connect C leave open circuit [8] 11 txpa i/o nc no connect C leave open circuit [8] 12 rxpa i/o nc no connect C leave open circuit [8]
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 6 of 23 (905) 479-0148 http://www.artaflexmodules.com b. aws24s - co-axial external antenna module size: 38.1 mm x 25.4 mm (1.5 x 1.0) aws24s connector pin information pin name type default description 1 gnd power gnd ground 2 vcc power vcc main supply 2.4 to 3.6 volts 3 irq i/o - interrupt output (configurable active h igh or low), or gpio 4 rst input input module reset. internal on chip 10 k-ohm pull-down resistor. active high 5 mosi i/o input spi data input, or sdat 6 ss input pull up spi interface enable, active low 7 sck input input spi clock 8 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 9 gnd power gnd ground
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 7 of 23 (905) 479-0148 http://www.artaflexmodules.com 10 pactl i/o nc no connect C leave open circuit [8] 11 txpa i/o nc no connect C leave open circuit [8] 12 rxpa i/o nc no connect C leave open circuit [8] c. awa24s - power amplifier module size: 25.4 mm x 20.32 mm awa24s connector pin information pin name type default description 1 gnd power gnd ground 2 vcc power vcc main supply 2.4 to 3.6 volts 3 irq i/o - interrupt output (configurable active h igh or low), or gpio 4 rst input input module reset. internal on chip 10 k-ohm pull-down resistor. active high 5 mosi i/o input spi data input, or sdat 6 ss input pull up spi interface enable, active low 7 sck input input spi clock 8 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 9 gnd power gnd ground 10 *pactl power vcc power control C max power at 3. 3v - shut down 0v 11 txpa input input active high to set module into a transmit mode (rxpa = low) 12 rxpa input input active high to set the module into a receive mode (txpa = low)
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 8 of 23 (905) 479-0148 http://www.artaflexmodules.com d. awp24u - wireless usb dongle size: 45.7 mm x 20.3 mm
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 9 of 23 (905) 479-0148 http://www.artaflexmodules.com e. awac24u C wireless usb dongle with pa no drawing available. mechanical specifications pen ding release.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 10 of 23 (905) 479-0148 http://www.artaflexmodules.com f. AW24MCHL-H2 - micro module with chip antenna size: 16 mm x 13.5 mm g. aw24mchl-hr - micro module with chip antenna an d ra connector
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 11 of 23 (905) 479-0148 http://www.artaflexmodules.com AW24MCHL-H2 / hr connector pin information header pin no name type default description 1 gnd power gnd ground 2 vcc power vcc main supply 2.4 to 3.6 volts 3 irq i/o - interrupt output (configurable active high or low), or gpio 4 rst input input module reset. internal on chip 10k-ohm pull- down resistor. active high 5 mosi i/o input spi data input, or sdat 6 ss input pull up spi interface enable, active low 7 sck input input spi clock 8 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 9 gnd power gnd ground 10 l/d power gnd connect to gnd.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 12 of 23 (905) 479-0148 http://www.artaflexmodules.com 11 txpa i/o o can be used as gpio 12 rxpa i/o o can be used as gpio h. aw24mufl-h2 - micro module with ufl connector size: 16 mm x 13.5 mm
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 13 of 23 (905) 479-0148 http://www.artaflexmodules.com aw24mufl-h2 connector pin information header pin no name type default description 1 gnd power gnd ground 2 vcc power vcc main supply 2.4 to 3.6 volts 3 irq i/o - interrupt output (configurable active high or low), or gpio 4 rst input input module reset. internal on chip 10k-ohm pull- down resistor. active high 5 mosi i/o input spi data input, or sdat 6 ss input pull up spi interface enable, active low 7 sck input input spi clock 8 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 9 gnd power gnd ground 10 l/d power gnd connect to gnd. 11 txpa i/o o can be used as gpio 12 rxpa i/o o can be used as gpio
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 14 of 23 (905) 479-0148 http://www.artaflexmodules.com i. aw24mchl-sm - micro module with surface mount co nnections size: 15 mm x 13.5 mm aw24mchl-sm connector pin out information smt pin no name type default description 12 gnd power gnd ground 11 vcc power vcc main supply 2.4 to 3.6 volts 5 irq i/o - interrupt output (configurable active high or low), or gpio 9 rst input input module reset. internal on chip 10k-ohm pull- down resistor. active high 3 mosi i/o input spi data input, or sdat 4 ss input pull up spi interface enable, active low 2 sck input input spi clock 6 miso i/o hi z spi data output pin or gpio in 3-pi n spi mode. 13 gnd power gnd ground 10 l/d power gnd connect to gnd. 7 xout i/o o buffered 0.75, 1.5, 3, 6, or 12 mhz clock, pactl, o r gpio. tri-states in sleep mode (configure as gpio drive l ow). 8 pactl i/o o control signal for external pa, t/r switch, or gpio. 1,14,15,16 no connect C leave open circuit [8]
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 15 of 23 (905) 479-0148 http://www.artaflexmodules.com 5.0 design guidelines 5.1 pcb design all falcon wireless modules except the surface moun t version require a mating receptacle connector on the host pcb. the following are recommended connectors manufactured by fci that will mate to th e modules. equivalents from other manufacturers can also be used. these are available as surface mount versions or th rough-hole: fci part number 55508-112trlf (12 pin dual row 2mm vertical sm receptacle) http://portal.fciconnect.com/portal/page/portal/fci cntpublic/comergentconnect?appname=catdi splaystyle$domproductqueryname=55508-112trlf*$op=se arch fci part number 63453-112lf (12 pin dual row 2mm ve rtical through hole receptacle) http://portal.fciconnect.com/portal/page/portal/fci cntpublic/comergentconnect?appname=catdi splaystyle$domproductqueryname=63453-112lf*$op=sear ch
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 16 of 23 (905) 479-0148 http://www.artaflexmodules.com for artaflex wireless module aw24mchl-sm, there is no mating connector required since it is mounted directly onto the host pcb. see below for recommended land pattern.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 17 of 23 (905) 479-0148 http://www.artaflexmodules.com 5.2 module placement strategy artaflex wireless modules are rf devices that requi re proper placement on pcb to ensure optimal performance. the antenna on t he pcb has an omni- directional radiation pattern. to maximize antenna efficiency, an adequate grounding plane must be provided under the module. however, the areas underneath and surrounding the antenna area must be free of copper. the position of the module on the host board and overal l design of the product enclosure contribute to antenna performance. poor d esign effects radiation patterns and can result in reflection, diffraction, and/or scattering of the transmitted signal thus limiting the range. measure d radiation patterns of these modules are available from artaflex and can be used to benchmark design performance. in summary: i. never place the ground plane or route copper tra ces directly underneath the antenna portion of the module. ii. never place the antenna close to metallic objec ts. iii. keep wiring, components and objects away from antenna. iv. do not place the antenna in a metallic or metal ized plastic enclosure. v. enclosure walls should be 1cm or more away from the antenna in all directions. vi. if possible, mount antenna overhanging the edge of the host board. add an uninterrupted ground plane on host board, directly underneath the module, up to the pcb edge. adding a ground plane will allow t races to be run on the on the bottom side of the host board if required. see diagram following. vii. if antenna cannot be mounted in overhanging po sition, then provisions must be made to keep area clear of copper as recommended in diagram. viii. for designs that require external antenna and u.fl connector, use recommended antenna. the rules for placement on edg e are not required. however, a ground plane is necessary underneath the module.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 18 of 23 (905) 479-0148 http://www.artaflexmodules.com if required, please contact artaflex for assistance for pcb layout and rf design.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 19 of 23 (905) 479-0148 http://www.artaflexmodules.com
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 20 of 23 (905) 479-0148 http://www.artaflexmodules.com 5.3 external antenna applications artaflex recommends using centurion antenna wrr2400 -ip04-b for modules that require an external antenna. this antenna has been qualified and approved for use by regulatory agencies in the us, canada an d european union under the modular approval certification. it is compatible wi th the rf impedance and frequency range of all artaflex models that have an external antenna with u.fl connector. the use of any antenna that does not mee t the same parameters as the antenna recommended voids the modular approval grant. follow the recommended rules for optimal performanc e: i. place antenna vertically for longest range and b est communication ii. allow 75-130 mm clearance from antenna to any m etallic objects iii.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 21 of 23 (905) 479-0148 http://www.artaflexmodules.com 6. smt assembly guidelines for aw24mchl-sm j. solder reflow profiles package reflow parameters j-std-020 convention 220 +/- reflow profile average ramp-up rate (183? c to peak) 3?? c/second max preheat temperature 125? c (+/- 25? c) 120 seconds max temperature maintained above 183?? c 60~150 seconds time within 5?? c of actual peak temperature 10~20 seconds peak temperature range 220 +5/-0? c ramp-down rate 6? c/second max time 25? c to peak temperature 6 minutes max package reflow parameters j-std-020 convention 235 +5/-0? c reflow profile average ramp-up rate (183? c to peak) 3?? c/second max preheat temperature 125? c (+/- 25? c) 120 seconds max temperature maintained above 183?? c 60 ~150 second s time within 5?? c of actual peak temperature 10 ~ 2 0 seconds peak temperature range 235 +5/-0? c ramp-down rate 6? c/second max time 25? c to peak temperature 6 minutes max package reflow parameters nemi recommended convection or ir 260? c reflow profile ramp-up rate (217? c to peak) 3?? c/second max preheat temperature 125? c (+/- 25? c) 60 to 120 s econds max time 50?? c to peak temperature 3.5 minutes, 6 minu tes max temperature maintained above 217? c 60 to 150 secon ds time within 5? c of actual peak temperature 10 ~ 20 seconds peak temperature range 260? c -5/+0? c ramp-down rate 6? c/second max
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 22 of 23 (905) 479-0148 http://www.artaflexmodules.com k. pb-free soldering paste use of no clean soldering paste is strongly recom mended, as it does not require cleaning after the soldering process. note: the quality of the solder joints on the castellatio ns (half vias) where they contact the host board should meet the appropriate ipc specification. see ipc- a-610-d acceptability of electronic assemblies, sec tion 8.2.4 castellated terminations . l. cleaning in general, cleaning the populated modules is stron gly discouraged. residuals under the module cannot be easily removed with any cleaning process. cleaning with water can lead to capillary effects w here water is absorbed into the gap between the host board and the module. the combination of soldering flux residuals and encapsulated water could lead to short circuits between neighboring pads. water could also damage any stick ers or labels. cleaning with alcohol or a similar organic solvent will likely flood soldering flux residuals into the two housings, which is not acces sible for post-washing inspection. the solvent could also damage any stick ers or labels. ultrasonic cleaning could damage the module permane ntly. the best approach is to consider using a no clean soldering paste and eliminate the post-soldering cleaning step. m. optical inspection after soldering the module to the host board, consi der optical inspection to check the following: proper alignment and centering of the module over t he pads. proper solder joints on all pads. excessive solder or contacts to neighboring pads, o r vias.
artaflex inc. 215 konrad crescent file: an-121-0001-r2 markham, ontario, canada l3r8t9 page 23 of 23 (905) 479-0148 http://www.artaflexmodules.com n. repeating reflow soldering only a single reflow soldering process is encourage d for host boards. o. wave soldering if a wave soldering process is required on the host boards due to the presence of leaded components, only a single wave soldering process should be used. p. hand soldering hand soldering is possible. use a soldering iron te mperature setting equivalent to 350c, follow ipc recommendations/reference docu ment ipc-7711. q. rework the smt module can be unsoldered from the host boar d. use of a hot air re- work tool and hot plate for pre-heating from undern eath is recommended. avoid overheating . warning! never attempt a rework on the module itself, e.g. r eplacing individual components. such actions will void warranty coverag e. the information contained herein is subject to chan ge without notice and may be found to contain error s of omission or changes in parameters. for feedback or technical support regarding artaflex cy fi radio modem products please contact artaflex at www.artaflex.com . artaflex inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in an artaflex product. nor does it convey or imply any license under paten t or other rights. artaflex products are not warran ted nor intended to be used for medical, life suppo rt, life saving, critical control or safety application s, unless pursuant to an express written agreement with artaflex inc. furthermore, artaflex does not authorize its products for use as critical componen ts in life-support systems where a malfunction or f ailure may reasonably be expected to result in significant injury to the user. the inclusion of ar taflex products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies artaflex inc. again st all charges. cyfi and autorate are trademarks? of cypress semico nductor. all products and company names mentioned in this do cument are the trademarks of their respective holde rs.

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