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ant gnd we nshing?? trw - v8 - 925 -p rf module 925 mhz wireless rf hi power transceiver module version history version date changes v1.01 july . 29 , 2010 1 st. edition v1. 02 a ug . 05 , 2010 2 st. edition v1. 03 feb . 21 , 201 1 3 st. edition v1. 04 nov.03.2015 4 st. edition http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 1 wenshing confidential do not distribution
wenshing trw - v8 - 925 -p wireless hi gh p ower t ransceiver rf m odule is designed, developed and manufactured as contemplated for general use, without limitation, ordinary industrial use, general office use, personal use, and household use, but is not designed, developed and manufactured as contemplated (1) f or use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control i n nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system). (2) f or use requiring extremely high reliability (i.e., submersible repeater and artificial sat ellite). you shall not use this product for the above - mentioned us ing . if your equipment is likely to be used for the above - mentioned uses, please consult with our sales representative before us ing . wenshing component division shall not be liable against y ou and/or any third party for any claims or damages arising in connection with the above - mentioned uses of this product. frequency band module no. trw - v8 - 433 -x-x trw - v8 - 868 -x-x trw - v8 - 916 -x-x trw - v8 - 925 -x-x frequency range 432 ~43 6 mhz 865~867mhz 902~928 mhz 922 ~928mhz power c orrespondence trw - v8 - 433 -l-x trw - v8 - 868 -l-x trw - v8 - 916 -l-x trw - v8 - 925 -l-x output 50mw output 50mw output 50mw output 50mw trw - v8 - 433 -p-x trw - v8 - 868 -p-x trw - v8 - 916 -p-x trw - v8 - 925 -p-x output 500mw output 500mw output 500mw output 500mw optional module no. description ? if the last section of module no. is g, which means this module has g sensor ? if the last section of module no. is p, which means this module has pressure sensor ? every model of this module has temp s ensor . all optional parts can be added to the module. http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 2 wenshing confidential do not distribution
japan frequency band module no. trw - v8 - 426 -x-x trw - v8 - 429 -x-x remark frequency range 426.025mhz 429.25~429.7375mhz (25k hz g ) power c orrespondence 1mw, 10mw 1mw, 10mw ?? O optional module no. description ? if the last section of module no. i s g, which means this module has g sensor ? if the last section of module no. is p, which means this module has pressure sensor ? every model of this module has temp sensor. all optional parts can be added to the module. function introduction trw - v8 - 925 -p is wireless hi gh p ower data two - way transceiver rf module. the key feature of this module is its resilience against interference, which way surpass traditional wireless module. the build in saw filter can remove unnecessary interference signals. when the tra nsmitting distance is not far enough during operational environment, relay protocol station can be used to forward signal; also, transmitting to other interface if it is required. this module is fully digitalized structure designed, there is no adjustment required. this module includes ur and i2c interface, which provide convenience communication. also, we can modify software, including special monitor point for voltage (a/d), current, output voltage (d/a) according to customer demand. end product requirem ent can be met without add mcu; this will save designing time for user. another key feature of tr w-v8 is its wide operating temperature, which is between -1 0 and + 70 c. the build - in afc can auto - lock frequency, there is no need to worry about frequency sh ifting after long period of operation. trw - v8 - 925 -p has wide range of usage other than transmitting date. this module can vibration collector, (detecting landslides) and weather detection. other function can be added accordingly; also, software can be cha nged, this module is convenient and easy to use. http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 3 wenshing confidential do not distribution
application ? safety monitoring system ? 900mhz wireless cordless ? wireless remote control car ? wireless remote control robot ? meter, water meter, coin data acquisition ? wireless modem ? debris flow detection point ? weather detection point ? wireless transmission network transfer function ? wsn electrical specification parameter min type max unit condition operating condition operating temperature range -10 +27 + 70 operating supply voltage 4.5 5 5.5 v current consumption rx mode (5vdc) 30 35 ma tx mode (5vdc) 500 ma peak rf characteristic frequency range 922 925 928 mhz data r ate 1. 6 128 kbps g fsk tx output p ower 27 27.5 dbm rx s ensitivity - 118 -1 20 dbm modulation g fsk other esd 2000 v interface data rate 1.2 115.2 kbps http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 4 wenshing confidential do not distribution
internal block diagram absolute maximum r ating minimum maximum units operating conditions supply voltages - 0.3 5.5 v vdd 0 v gnd input voltage - 0.3 3.6 v vi(data in) output voltage gnd to 3 gnd to 3 v vo gnd gnd / reset vdd in p2 p0.0 3 v out p0.2 p0.3 tx p0.1/ da rx p0.5 p0.7 p1.6 /i2 c clk p1.7/i2 c data dc max 5v g sensor option temp sensor option g sensor option regulator to ur ttl ( rx ) to ur ttl ( tx ) i2 c clk i2 c data mcu rf d/a ext ant trw -v 8 block a/d led led led led switch switch optino optino i2c optino trw 8 25 p d p 5 wenshing confidential do not distribution
size 16.7 mm 5.8mm 11.65mm 2.0mm 3.0mm ant gnd 28.11mm 16.7 1mm 28.111mm 5.81mm 2 .1 0 .15 m m 11.65 1m m http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 6 wenshing confidential do not distribution
pin assignment pin name i/o description 1 ant i/o to ext antenna 2 gnd rf gnd rf gnd 3 gnd ground ground 4 /reset i active low module reset 5 p20 i/o general i/o usage 6 3v out power 3v output can connect to current under 50ma. 7 p2.0/ crystal i/o general i/o usage, option: can connect to 32.768khz crystal 8 p0.1/auo i/o general i/o usage, option: can be data converted to analog (d/a) 9 p0.5 i/o general i/o usa ge, option: can be analog converted to data (a / d) 10 p1.6/clk i/o general i/o usage, option: can be used as i2c clk 11 p1.7 i/o general i/o usage, option: can be used as i2c date 12 p0.7 i/o general i/o usage, (for p roducing t est rf pin) 13 rx i ur interface,(ttl 3v), can connect to rs - 232 chip tx 14 tx o ur interface,(ttl 3v), can connect to rs - 232 chip rx 15 p0.2/ crystal i/o general i/o usage, option: can connect to 32.768 khz crystal 16 p0.0 i/o general i/o usage, 17 vdd in power power supply 3.7~5.5v 18 gnd ground ground http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 7 wenshing confidential do not distribution
i nstruction m ode ? into set up mode transmit value= 0x01+0x02+ +7e+0x7f,total=127b ytes . receive value = 0x01+0x02+ +7e+0x7f, total=127b ytes and it transit 0x53 hint notes every second to tell user that it is on instruction mode. ? it needs to be in the set up mode to read or amend any paramete r. ? exit code mode transm it value = 0x ff ff ff 55 cc receive value = nothing, it stop transit back 0x53 hint notes every second. ? it needs to be in the set up mode. ? read in product name and model transmit value = 0x ff ff ff 55 aa bb fd receive value (no ch aracter) =trw - v8_v001 ? it has info rmation total in 11 b yte s , the first six characters is product name and last four characters are firmware ( the contents will be a little different in different version ). ? recover parameter transmit value = 0x ff ff ff 55 aa bb ff receive value = nothing ? delete the original parameter, and recover back to the new set code that is written in when it is out from factory. ? read in inside parameter transmit value = 0x ff ff ff 55 aa bb fe receive value = 0x03 00 00 00 00 05 0 e 1d 48 07 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff (this is the out from factory mode) ? it has information that totals in 31 b ytes, it is set inside parameter at present. ? set inside parameter transmit value = 0xfe 03 00 00 00 00 05 0 e 1d 48 07 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff it transit 32 bytes in total. receive value = 0xfd 03 00 00 00 00 05 0 e 1d 48 07 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff it is 32 b yte s in total transit back. it means it is same as the inside parameter if the first b yte shows fe, after it finish the update. ? it is 31 b yte s in total , change every parameter. ? the first byt e: the starting parameter, 0xfe http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 8 wenshing confidential do not distribution
? the second b yte: interface speed rate, set up range 00 07, the beginnin g rate is 9600bps. ? the third~ forth byte group (gid) set up range 0000ffff ? the fifth b yte instrument id(sid) set up range 00 ff ? the sixth b yte wrong parameter, fixed as 0x00 ? th e seventh b yte transmit rate, set up range 00 07; normally, the rf transmit rate must greater than interface speed rate when setting up, it prevent having the wrong information. ? the eighth ~ tenth byte working frequency , calculation: mhz*1000=khz , and transfer to 16 bytes. for example: when it is at 925 mhz working frequency 925*1000=925000=0x0 e 1d 48 fill in 0e in the eighth b yte , fill in 1d in the ninth b yte, fill in 48 in t he tenth b yte. w hen it is at 924.5mhz working frequency, 924.5*1000=924500=0x0 e 1b 54 ; fill in 0e in the eighth b yte, fill in 1b in the ninth b yte, fill in 54 in the tenth b yte . ? the eleventh byte bit0 bit2 shooting rate set up range 0 7 output power d bm set value hex (bit0 5 0 000 12 1 001 17 2 010 21 3 011 24 4 100 25 5 101 26 6 110 27 7 111 value 0 1 2 3 4 5 6 7 rate(bps) 1200 2400 4800 9600 19.2k 38.4k 57.6k 115.2k value 0 1 2 3 4 5 6 7 rate(bps) 1600 3200 6400 12.8k 25.6k 51.2k 76.8k 128 k http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 9 wenshing confidential do not distribution
bit3 bit5 wrong parameter fixed as 000 bit6 bit7 instrument working mode there are four mode: mode 1 (long data mode: set up as 00) gid of every instrument can receive info at this mode, and it can specifically use on data info that is larger than 12 7b yte s. mode 2 (id: info mode 1 once gid can transmit to particular sid instrument under this mode, it is one to many; the single info must Q 127byte s. transmission: t he first byte is the sid of the receiv er , and from the second byte, it becomes data. example: the sid of device a is 55, the sid of device b is 88, and they have the same gid . u nder mode 2 , device a is going to transmit data 0x1234567890 , 5 bytes in total, to b device, a then sends data 0x881234567890 , 6bytes in total to b , b will receive 0x551234567890 , 6byte in total. the first byte is the sid of the transmitter. mode 3 (id: info mode 2 once gid can transmi t to particular sid instrument under this mode, it is one to many; the single info must Q 127bytes. transmission: data shall be transmitted under the same rule of the thirteen to thirty - two byte. example: the gid of device a = aaaa, sid = 55; the gid of devi ce b = bbbb, sid = 88; the gid of device c = cccc, sid = 99. a is going to transmit 0x1234567890 to b, 5 bytes in total. a then sends 0x04ffbbbb881234567890, 10 bytes in total, to b, b will receive 0x1234567890, 5 bytes in total. a is going to transmit 0x1234567890, 5 bytes in total, to b via c. a then sends 0x08ffbbbb88ffcccc991234567890, 14 bytes in total, c will receive 0x1234567890, 5 bytes in total, but b will not receive any data. mode 4 ( saved id data mode: set up as 11) it can set in advance to save particular gid and sid way , it will transmit it back re ferring to the track it is saved. it can forward the track up to fourteen http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 10 wenshing confidential do not distribution
times, the single info must Q127 byte s. ? the twelfth b yte p wrong parameter , it fixed as 0x00 . ? the thirteenth ~ the thirty - two b yte p the pre saved track , it only works under mode 4 (sav ed id data mode) . ? the thirteenth byte p it shows how much information in the fourteenth b yte ~thirty - two b yte. ? the fourteenth b yte ~ thirty - two b yte road formation: ? example 1: 04 ff 12 34 55 11 22 33 44 q 00 you can know there is four bytes effective information as ff 12 34 55 from the thirteen b yte. ff 12 34 55 means gid=1234 ? sid=55 , t his instrument will forward information to gid=1234 ? sid=55 once ur instrument after receiving it. ? example 2: 05 ff 12 34 55 11 22 33 44 q 00 you can know there is five byte effe ctive information as ff 12 34 55 11 from the thirteen b yte. ff 12 34 55 11 means, gid=1234 ? sid=55 #r 11 p? this instrument will forward information to gid=1234 ? sid=11 instrument after this instrument transmit information automatically to gid=1234 ? sid=55 when r eceiving it through ur. ? example 3 p 06 ff 12 34 55 11 22 33 44 q 00 you can know there is six bytes effective information as ff 12 34 55 11 22 from the thirteenth b yte. ff 12 34 55 11 22 means gid=1234 ? sid=55 ? 11 and 22. it will forward information to gid=123 4 ? sid=11 instrument and gid=1234 ? sid=22 after this instrument transmit information automatically to gid=1234 ? sid=55 after receiving it through ur. ? example 4 p 08 ff 12 34 55 ff 45 67 88 44 q 00 you can know there is eight bytes effective information as ff 12 34 55 ff 45 67 88. ff 12 34 55 ff 45 67 88 means gid=1234 ? sid=55 and gid=4567 ? sid=88. this instrument will forward information to gid=4567 ? sid=88 instrument once this instrument transmit information automatically to gid=1234 ? sid=55 when receiving it thr ough ur. http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 11 wenshing confidential do not distribution
circuit example 1 1 2 3 4 a b c d 4 3 2 1 d c b a c2 10 4p 1 2 3 4 j1 co n4 5v an t 1 gn d 2 gn d 3 rs t 4 p2 . 0/c2 5 2 . 7 v out 6 a in/ p 0 . 3 / x 7 a ou t 8 p0 . 7 9 p1 . 1 10 p1 . 0 11 p0 . 6 12 p0 . 5/rx 13 p0 . 4/tx 14 p0 . 2/x 15 p0 . 0 16 vd d in 17 gn d 18 modu l1 tr w- v8 d2 nc r2 nc d1 nc r1 nc an t1 sma c1 22 p l1 4t 3v3 1 2 3 4 5 6 7 j2 co n5 c1 + 1 v+ 2 c1 - 3 c2 + 4 c2 - 5 v- 6 t2 ou t 7 r2 in 8 r2 ou t 9 t2 in 10 t1 in 11 r1 ou t 12 r1 in 13 t1 ou t 14 gn d 15 vc c 16 u1 adm3202 r6 10 k r5 10 k l4 3r3(0 805 ) l5 3r3(0 805 ) c8 47 p c9 47 p l6 3r3(0 805 ) c3 10 5p c4 10 5p c5 10 5p c6 10 5p 3v3 sop1 6 c7 10 5p r3 10 k r4 10 k l2 be ad l3 be ad rt s ct s rx tx gn d dt r r7 nc r9 12 k 3v3 r8 4k7 5v c1 0 10 6p d4 nc r1 1 nc d3 nc r1 0 nc d5 le d r1 2 4k7 rd232( r s232) Dd??? ? II?g?[ ( k no w -how ) ?? ??? }? u z?Dd ??V? title wensheng s ize a4 document number rd232( rs232) date: 2010/04/23 rev s heet: of circuit example 2 1 2 3 4 a b c d 4 3 2 1 d c b a c2 10 4p or 1 re 2 de 3 di 4 g nd 5 a 6 b 7 vcc 8 u1 um34 83 1 2 3 4 j2 con4 (1.27mm) c1 0 47 p c1 1 47 p c1 2 47 p l2 3r3 l3 3r3 l4 3r3 l5 3r3 c7 47 p c8 47 p c9 47 p d4 tvs d3 tvs c6 10 6p 1 2 3 4 j1 co n4 5v c3 10 4p 3v3 an t 1 gn d 2 gn d 3 rs t 4 p2 . 0/c2 5 2 . 7 v out 6 a in/ p 0 . 3 / x 7 a ou t 8 p0 . 7 9 p1 . 1 10 p1 . 0 11 p0 . 6 12 p0 . 5/rx 13 p0 . 4/tx 14 p0 . 2/x 15 p0 . 0 16 vd d in 17 gn d 18 modu l1 tr w- v8 5v d1 nc r1 nc d2 nc r2 nc r3 0r r4 0r an t1 sma c1 22 p l1 4t 3v3 d6 nc r5 nc d7 nc r6 nc d8 le d r7 4k7 rd232( 485& ttl) Dd??? ? II?g?[ ( k no w -how ) ?? ??? }? u z?Dd ??V? title wensheng s ize a4 document number rd232( 485& ttl) date: 2010/04/23 rev s heet: of http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 12 wenshing confidential do not distribution
module1 trw-24np ant 1 vdd 2 vdd 3 gnd 4 gnd 5 enable 6 ce 7 cns 8 sck 9 mosi 10 mi so 11 irq 12 rf gnd 13 c35 106p c36 106p power gnd to mcu e1 antenna layout notes ? it should be to add several big capacitors before power on to increase stable rf communication. ? it should not run digital signal at end of module to avoid emi transmitte d to rf module. ? module add external antenna, t he bottom part of the pcb antenna should be as much as possible to provide non - copper p ark area for the antenna radiation use . http ://www.wenshing.com.tw ; http://www.rf.net.tw trw - v8 - 925 -p datasheet p. 13 wenshing confidential do not distribution

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