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W55RFS27T3 data sheet 1 revision: a 3 .0 publish date: feb. 2010 - 1 - revision a1 super - regeneration rf transmitter W55RFS27T3 data sheet
W55RFS27T3 data sheet 2 revision: a 3 .0 publish date: feb. 2010 - 2 - revision a1 contents general description 3 1.1 features ................................ ................................ ................................ ................................ ............. 3 1.2 W55RFS27T3 pad description ................................ ................................ ................................ .......... 4 1.2.1 W55RFS27T3 pad description ................................ ................................ ......................... 4 1.2.3 W55RFS27T3 input state v.s. encoder output function (manual - mode only) ................... 4 system description 5 2.1 W55RFS27T3 system block diagram ................................ ................................ ............................... 5 2.2 W55RFS27T3 functional description ................................ ................................ ............................... 6 electronic characteristics 6 3.1 W55RFS27T3 abs olute maximum ratings ................................ ................................ ....................... 6 3.2 W55RFS27T3 dc characteristics ................................ ................................ ................................ ...... 7 3.3 W55RFS27T3 ordering information ................................ ................................ ................................ . 7 3.4 W55RFS27T3 package information ................................ ................................ ................................ ... 8 3.4.1 W55RFS27T3 bonding pad diagram list ................................ ................................ ........ 8 3.4.2 W55RFS27T3 bondin g pad diagram ................................ ................................ ............... 8 design information 9 4.1 W55RFS27T3 reference design ................................ ................................ ................................ ....... 9 4.1.1 W55RFS27T3 application circuit ................................ ................................ .................... 9 4.2 W55RFS27T3 fcc certification ................................ ................................ ................................ ..... 11 4.3 W55RFS27T3 data sheet document history ................................ ................................ .................. 12
W55RFS27T3 data sheet 3 revision: a 3 .0 publish date: feb. 2010 - 3 - rev ision a1 general description nuvoton w55r f s 27t 3 is a fully integrated s - r (super - regeneration) rf transmitter with full - function of baseband command encoder for application of r/c vehicle, toy, or wireless data communication. W55RFS27T3 pro vides both uc - mode for general purpose of micro - controller programming interface and manual - mode for rf transmitter as well as 6 - function of baseband command encoder. w55r f s 27t 3 cooperate with w55r f s 27 r 3b is very easy and convenient to provide simple remo te control function for multi - player in various application. built - in channel - share algorithm allows maximum 3 players playing simultaneously by using t3/r3b. the transmitter provides the fcc/etsi regulation provisions for 27m and 49mhz s - r (super - regenera tion) modulation . wide range of operation voltage from 2.2v to 5.5v is suitable for 2 - battery or 3 - battery r/c toy application, and high efficient transmission output power. W55RFS27T3 is compliant to fcc part 15 class b and 15.227 / etsi 300 220 - 1, making it easier for wireless end products to get fcc and etsi compliance approval. W55RFS27T3 can be easily controlled by winbond w55rc168 digital - proportional r/c toy controller or a general purpose micro - controller to support r/c toy or wireless data communic ation. 1.1 features ? wide operating frequency: 27mhz ~ 49mhz ? wide operating voltage: 2.2v ~ 5.5v ? high efficient transmission output power: 15dbm ? manual - mode s upports 6 - function of r/c toy baseband control command encoder ? high efficient transmission power with minimum current consumption ? power down current consumption less than 1ua in uc - mode ? less manual adjustment needed in production ? f ew er external components required in production ? l ow er manufacture production cost ? compliant to fcc part 15 class b and 15.227 / etsi 300 220 - 1 low - power & short - range device requirements ? dice form available for pcb bonding ? operating temperature: 0 ? c ~ 70 ? c
W55RFS27T3 data sheet 4 revision: a 3 .0 publish date: dec. 2010 - 4 - revision a1 1.2 W55RFS27T3 pad description 1.2.1 W55RFS27T3 pad description symbol p ad no. i/o functional description s 3 1 i manual - mode input: f1 ( 2 - state ) s 4 2 i manual - mode input: f2 ( 2 - state ) cksel 3 i cksel = "0" ? ? ? uc - mode id0 13 i id s etting(lsb) for channel shared , id0=id1 = 1 ? uc - mode txout 14 o txd data output s1/~txd 15 i manual - mode input: f/b (3 - state) or uc - mode: ~ txd s2/~enb 16 i manual - mode input: l/r (3 - state) or uc - mode: ~ enb 1.2.3 W55RFS27T3 input state v.s. enc oder output function (manual - mode only) input pin name \ state floating (pull high) gnd txout s1 f = b = 0 f = 0, b = 1 f = 1, b = 0 s2 l = r = 0 l = 0, r = 1 l = 1, r = 0 s3 f1 = 0 f1 = 1 s4 f2 = 0 f2 = 1 (note: f ? forward; b ? backward; l ? left - turn; r ? right - turn; f1 , f2 ? two user - defined function)
W55RFS27T3 data sheet 5 revision: a 3 .0 publish date: dec. 2010 - 5 - revision a1 system description 2.1 W55RFS27T3 system block diagram pa encoder control circuit s1 ptx oscillation (27~49mhz) x ant x1 x2 txout vdd gnd test reset s2 s3 s4 id 0 cksel por id 1
W55RFS27T3 data sheet 6 revision: a 3 .0 publish date: dec. 2010 - 6 - revision a1 2.2 W55RFS27T3 functional description w 55rf s 27t3 provides two operation modes for convenient remote control prod uct development, named manual - mode and uc - mode . manual - mode provide s a powerful baseband command encoder , which perform 6 - function binary data encode and direct output to control the on - chip rf transmitter. the encoder integrate winbond patented channels hared wb technology in it and allow at most 3 players at the same time. the 6 - function can be f orward, b ackward, l eft - turn, r ight - turn for general r / c - vehicle control and 2 other user - defined functions. auto power down function save battery life when all in puts are released. it is very convenient to do remote control if w 55rf s 27t3 and its associated receiver/decoder w 55rf s 27 r 3b are adopted. the uc - mode provides digital interface for external micro - controller to control the transmitter easily and efficientl y. the micro - controller only needs two pins, txd (s1) to send data and enb (s2) to enter power down mode, if needed. the transmitter provides the fcc/etsi regulation provisions for 27m and 49mhz s - r (super - regeneration) modulation . wide range of operation voltage from 2.2v to 5.5v is suitable for 2 - battery or 3 - battery r/c toy application, and 15dbm high efficient transmission output power. W55RFS27T3 super - regeneration rf transmitter is compliant to fcc part 15 class b and 15.227 / etsi 300 220 - 1, making i t easier for wireless end products to get fcc and etsi compliance approval. electronic characteristics 3.1 W55RFS27T3 absolute maximum ratings parameter rating unit supply voltage to ground potential - 0.3 to 6.5 v applied input/output voltage - 0. 3 to 6.5 v power dissipation (t a = 70 ? ? ? note: exposure to conditions beyond those listed under absolute maximum ratings may adversely affect the life and reliability of t he device.
W55RFS27T3 data sheet 7 revision: a 3 .0 publish date: dec. 2010 - 7 - revision a1 3.2 W55RFS27T3 dc characteristics (vdd - vss = 3 v, ta = 25 ? c; unless otherwise specified) parameter sym. conditions min. typ. max. unit power supply operating voltage v dd 2.2 - 5.5 v operating current (tx mode) i tx vdd=5.5v ptx=h - 40 - ma vdd =2.2v ptx=l - 22 - ma stand - by current i sby - - 1 ? a digital input/output pin (s1, s2, s3, s4, ptx, mode) input high voltage v ih 0.8* v dd - v dd v input low voltage v il v ss - 0.1* v dd v txout output high source current i oh v oh =0.7 * v dd 6 - - ma txout output low sink current i ol v ol =0.3 * v dd 6 - - ma crystal oscillator operation frequency f xtl 27 - 49 mhz oscillator turn - on time t osc fundamental type - - 1.0 ms over - tone type - - 3.0 ms transmitter section modulation duty cycle m dyt 30 50 70 % transmission data rate r dtt 50% duty - cycle rz code - 2.5 10 kbps transmission output power antenna port, transmission power p h vdd =2.2v ptx= 0 - 12.5 - dbm p l vdd=5.5v ptx= 1 - 18 - dbm notes: (1). crystal turn - on time depends o n crystal type: fundamental or overtone type crystal. (2). transmitter settling time depends on crystal type: fundamental or overtone type crystal. 3.3 W55RFS27T3 ordering information W55RFS27T3 provides two types of package in shipment: d ice form, pdip - 16, and wafer form part number package remarks W55RFS27T3 dice form W55RFS27T3 wafer form moq required
W55RFS27T3 data sheet 8 revision: a 3 .0 publish date: dec. 2010 - 8 - revision a1 3.4 W55RFS27T3 package information 3.4.1 W55RFS27T3 bonding pad diagram list window : (xl = - 675.000, yl = - 640.000),(xh = 675. 000, yh = 640.000) windows size : width = 1350.000, length = 1280.000 ============================================================================ === pad no pad name pin name x y -------------------------------------------------------------- -------------- --- 1 s3 1 - 468.400 - 88.550 2 s4 2 - 468.400 - 271.650 3 cksel 3 - 467.800 - 434.050 4 test 4 - 331.350 - 434.050 5 ptx 5 70.450 - 434.050 6 ant 6 460.200 - 434.050 7 vss1 7 460.200 - 235.350 8 vsply 8 460.200 - 100.350 9 reset 9 460.200 258.600 10 x1 10 452.800 424.400 11 x2 11 317.800 424.400 12 id1 12 - 65.250 424.400 13 id0 13 - 200.250 424.400 14 txdout 14 - 468.400 424.400 15 s1 15 - 468.400 229.550 16 s2 16 - 468.400 46.450 ================================================================ ============ === 3.4.2 W55RFS27T3 bonding pad diagram 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 W55RFS27T3
W55RFS27T3 data sheet 9 revision: a 3 .0 publish date: dec. 2010 - 9 - revision a1 design information 4.1 W55RFS27T3 reference design 4.1.1 W55RFS27T3 application circuit v dd v dd v dd v dd v dd v dd v sp ly ptx=1 for vcc > 3.3v ptx=0 for vcc < 3.3v for overtone x'tal only (no x'tal use only) cksel = 0 for 27mhz cksel = 1 for 49mhz l-c oscillation led control circuit v dd s1 s2 s3 s4 t xout p tx p tx cks e l id0 id1 s2 s1 s2 s1 27 .1 45mhz l2 3.3u h c13 47 n a nt e nna l1 27 0nh c7 10 0p s w3 le ft tu rn s w4 rig ht turn s w5 f1 l6 1.5u h c19 47 n + c18 10 u jp 5 e xt 1 2 3 4 5 6 7 8 c20 47 n l7 6.8u h s w6 f2 c33 47 n jp 1 p tx 1 2 3 jp 3 cks e l 1 2 3 jp 6 id0 1 2 3 jp 7 id1 1 2 3 u1 W55RFS27T3 t xout 14 x2 11 cks e l 3 v sp ly 8 v ss 7 a nt 6 p tx 5 res e t 9 s4 2 s3 1 s2 16 s1 15 id1 12 id0 13 t es t 4 x1 10 1n41 48 le d 30 0 10 0u 1n41 48 s w2 b ackward s w1 fo rward t xout cks e l p tx id0 id1 t xout s2 s1 t xout
W55RFS27T3 data sheet 10 revision: a 3 .0 publish date: dec. 2010 - 10 - revision a1 W55RFS27T3 application schematic bom: item qty reference part _____________________ ___________________________________________________________ 1 1 ant1 antenna 2 1 c7 100p 3 4 c13,c19,c20,c33 47n 4 1 c18 10u 5 1 jp1 ptx 6 1 jp3 cksel 7 1 jp5 ext 8 1 jp6 id0 9 1 jp7 id1 1 0 1 l1 270nh 11 1 l2 3.3uh 12 1 l6 1.5uh 13 1 l7 6.8uh 14 1 sw1 forward 15 1 sw2 backward 16 1 sw3 left turn 17 1 sw4 right turn 18 1 sw5 f1
W55RFS27T3 data sheet 11 revision: a 3 .0 publish date: dec. 2010 - 11 - revision a1 4.2 W55RFS27T3 fcc certification
W55RFS27T3 data sheet 12 revision: a 3 .0 publish date: dec. 2010 - 12 - revision a1 4.3 W55RFS27T3 data sheet docu ment history revision date description a 1.0 sep. 2002 preliminary version i a1 .1 apr. 2003 W55RFS27T3 application schematic update a2 .0 mar. 2004 update bonding pad information & fcc certification a3 .0 feb. 2010 logo changed impo rtant notice nuvoton products are neither intended nor warranted for usage in systems or equipment, any malfunction or failure of which may cause loss of human life, bodily injury or severe property damage. such applications are deemed, insecure usage. insecure usage includes, but is not limited to: equipment for surgical implementation, atomic energy control instruments, airplane or spaceship instruments, the control or operation of dynamic, brake or safety systems designed for vehicular use, traffic si gnal instruments, all types of safety devices, and other applications intended to support or sustain life. all insecure usage shall be made at customers risk, and in the event that third parties lay claims to nuvoton as a result of customers insecure u sage, customer shall indemnify the damages and liabilities thus incurred by nuvoton.

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