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w55rfs27t1b data sheet super-regeneration rf transmitter publication release date:may 24, 2005 - 1 - revision a3 table of contents- 1. general des cription ............................................................................................................ ...... 2 1.1 features ....................................................................................................................... .............. 2 1.2 w55rfs27t1b pad definition................................................................................................... 3 1.2.1 pad descr iption................................................................................................................ ...........3 1.2.2 clock frequency select (cksel) setup.....................................................................................3 1.2.3 uc-mode & manual mode (baseba nd data rate ) setup ............................................................4 1.2.4 baseband encoder control function de scripti on .......................................................................4 2. system description............................................................................................................. ........ 5 2.1 w55rfs27t1b system block diagram .................................................................................... 5 2.2 w55rfs27t1b functio nal description ..................................................................................... 6 3. electronic char acteristics................................................................................................... 7 3.1 w55rfs27t1b absolute maximum ratings ............................................................................. 7 3.2 w55rfs27t1b dc char acteristics ........................................................................................... 7 3.3 w55rfs27t1b orderi ng information........................................................................................ 8 3.4 w55rfs27t1b package information........................................................................................ 8 3.4.1 bonding p ad li st ............................................................................................................... ..........8 3.4.2 bonding p ad diagr am ............................................................................................................ .....9 4. design info rmation ............................................................................................................. ...... 10 4.1 w55rfs27t1b refe rence design .......................................................................................... 10 4.1.1 txout waveform ................................................................................................................. ....10 4.1.2 application circu it for 6 contro l functi ons ................................................................................11 4.1.3 application circu it for 4 contro l functi ons ................................................................................12 4.1.4 application circu it for fcc.................................................................................................... ....14 4.2 uc-mode cont rol si gnal......................................................................................................... .. 15 4.3 w55rfs27t family f cc certific ation .................................................................................... 16 5. revision histor y............................................................................................................... .......... 17
w55rfs27t1b -2- 1. general description the winbond w55rfs27t1b is a fully integrated , s-r (super-regeneration) rf transmitter with full-function baseband command encoder for r/c v ehicles, toys, or wireless data communication applications. the w55rfs27t1b provides two input modes: uc-mode , for general-purpose, micro-controller interfaces to the rf transmitter; and manual-mode , for a 6-function, baseband command encoder and rf transmitter that works conveniently with the w55rfs27r1b to provide a simple remote control capability with low cost and high performance. the s-r rf transmitter meets fcc/etsi regulations for 27 mhz, 35 mhz, 40 mhz, and 49 mhz s-r (super-regeneration) modulation, and it is compli ant with 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. in addition, the w55rfs27t1b accommodates a wide range of operating voltages (2.2 v to 5.5 v), supports 2-battery or 3-battery r/c appl ications, and transmits very efficiently. 1.1 features ? operating frequency: 27 mhz ~ 49 mhz ? wide operating voltage: 2.2 v ~ 5.5 v ? two input modes?uc-mode and manual-mode?for more flexibility ? (uc-mode) transmission data rate up to 10 kbps for 30%-70% duty-cycle signals ? (manual-mode) r/c-toy baseband control command enc oder, supporting 4 or 6 functions; forward, backward, left-turn, right-turn, and 2 user-defined functions f1 and f2 (user-defined functions not available in 4-function mode) ? highly-efficient transmissions with minimum current consumption ? power-down current consumption less than 1ua ? fewer external components required ? compliant with fcc part 15 class b and 15.227 / etsi 300 220-1 low-power and short-range device requirements ? dice form available for pcb bonding ? operating temperature: 0 c ~ 70 c
w55rfs27t1b publication release date:may 24, 2005 - 3 - revision a3 1.2 w55rfs27t1b pad definition 1.2.1 pad description symbol pad no. i/o functional description s3 1 i manual-mode input, internal pull-high s4 2 i manual-mode input , internal pull-high cksel0 3 i clock frequency select lsb ( please see section 1.2.2 for setup ) test 4 i test=0 for 6-function mode, test=1 for 4-function mode cksel1 5 i clock frequency select msb ( please see section 1.2.2 for setup ) ant 6 o rf signal output. an external matching circuit is necessary for connecting with an antenna. gnd 7 ground ground return path vdd 8 power power path reset 9 i reset=0 resets whol e chip, internal pull-high x1 10 i input of internal crystal oscilla tor to connect to an external crystal x2 11 o output of internal crystal oscill ator to connect to an external crystal id1 12 i id setting msb ( please see section 1.2.3 for setup ) id0 13 i id setting lsb ( please see section 1.2.3 for setup ) txout 14 o txd data output s1/~txd 15 i manual-mode input or uc-mode: ~txd, internal pull-high s2/~enb 16 i manual-mode input or uc-mode: ~enb, internal pull-high 1.2.2 clock frequency select (cksel) setup (cksel1,cksel0) clock frequency (0,0) 27.145 mhz (0,1) 35.48 mhz (1,0) 40.68 mhz (1,1) 49.86 mhz
w55rfs27t1b -4- 1.2.3 uc-mode & manual mode (baseband data rate) setup (id1,id0) function encoder time base (0,0) data rate = 2.5 kbps t = 200 us (0,1) data rate = 1.25 kbps t = 400 us (1,0) data rate = 0.625 kbps t = 800 us (1,1) uc-mode externally-controlled ( note: w55rfs27r1b data rate = 1.25 kbps; w55rfs27r1a data rate = 2.5 kbps) 1.2.4 baseband encoder control function description input pin name connect to 6-function (test=0) 4-function (test=1) default (pull high) f = 0, b = 0 f = 0 gnd f = 0, b = 1 f = 1 s1 txout f = 1, b = 0 - default (pull high) l = 0, r = 0 b = 0 gnd l = 0, r = 1 b = 1 s2 txout l = 1, r = 0 - default (pull high) f1 = 0 l = 0 s3 gnd f1 = 1 l = 1 default (pull high) f2 = 0 r = 0 s4 gnd f2 = 1 r = 1 ( note: f ? forward; b ? backward; l ? left-turn; r ? right-turn; f1 , f2 ? two user-defined functions)
w55rfs27t1b publication release date:may 24, 2005 - 5 - revision a3 2. system description 2.1 w55rfs27t1b system block diagram pa encoder control circuit s1 oscillation (27~49 mhz) ant x1 x2 txout vdd gnd reset s2 s3 s4 idn cksel por n test $enb $txd
w55rfs27t1b -6- 2.2 w55rfs27t1b functional description the w55rfs27t1b provides two operating modes, manual-mode and uc-mode , for remote-control product development . in manual-mode , the w55rfs27t1b encodes one of up to six f unctions, modulates it with the on-chip rf power amplifier, and transmits it to the receiver (e.g., w55rfs27r1b). this mode supports up to six functions: forward, backward, left-turn, right-t urn (for general r/c-vehicle control) and two user-defined functions f1 and f2. uc-mode provides a digital interface for any external mi cro-controller to control the s-r rf transmitter easily and efficiently. the micro-c ontroller only uses two pins: txd (s1), to send data; and enb (s2), to tell the w55rfs27t1b to enter and exit power-down mode, as needed. the transmitter meets fcc/etsi regulations fo r 27 mhz, 35 mhz, 40 mhz, and 49 mhz s-r (super-regeneration) modulation, and it is compli ant with 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. in addition, the w55rfs27t1b accommodates a wide range of operating voltages (2.2 v to 5.5 v), supports 2-battery or 3-battery r/c applicatio ns, and transmits at 15 dbm very efficiently.
w55rfs27t1b publication release date:may 24, 2005 - 7 - revision a3 3. electronic characteristics 3.1 w55rfs27t1b 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 c) 150 mw ambient operating temperature 0 to 70 c storage temperature -40 to 85 c note: exposure to conditions beyond those list ed under absolute maximum ratings may adversely affect the life and reliability of the device. 3.2 w55rfs27t1b 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 (uc-mode) i tx continuous emission - - 50 ma stand-by current i sby - - 1 a digital input/output pin (s1, s2, s3 , s4, id0, id1, mode,cksel0,cksel1) input high voltage v ih 0.8*v d d - v dd v input low voltage v il v ss - 0.1*v d d v input pin pull-high resistance r ph s1~s4, reset - 150k - ohm txout output high source current i oh voh=0.7 * v dd 6 - - ma txout output low sink current i ol vol=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, manchester code - 1.25 10 kbps transmission power p ant - 15 - dbm notes: (1). crystal turn-on time depends on crystal type: fundamental or overtone type crystal. (2). transmitter settling time depends on crystal type: fundamental or overtone type crystal.
w55rfs27t1b -8- 3.3 w55rfs27t1b ordering information the w55rfs27t1b is available in two forms: dice form and wafer form. part number package remarks w55rfs27t1b(h) dice form - w55rfs27t1b(w) wafer form - 3.4 w55rfs27t1b package information 3.4.1 bonding pad list window : (xl = -620.000, yl = -6 35.000),(xh = 620.000, yh = 635.000) windows size : width = 1240.000, length = 1270.000 ============================================================================ pad no pad name pin name x y ----------------------------------------------------------------------------- 1 s3 1 -535.000 -69.260 2 s4 2 -535.000 -360.520 3 cksel0 3 -535.000 -484.865 4 test 4 66.325 -550.000 5 cksel1 5 173.325 -550.000 6 ant 6 282.725 -550.000 7 * vss * 7 535.000 -218.395 8 vdd 8 535.000 20.945 9 reset 9 535.000 284.600 10 x1 10 245.005 550.000 11 x2 11 138.005 550.000 12 id1 12 31.005 550.000 13 id0 13 -75.995 550.000 14 txout 14 -288.420 550.000 15 s1 15 -535.000 329.000 16 s2 16 -535.000 37.740 ============================================================================ (*: bonding sequence start from vss(pin7))
w55rfs27t1b publication release date:may 24, 2005 - 9 - revision a3 3.4.2 bonding pad diagram 1 1 1 1 2 3 4 5 6 *7 89 1 1 1 1 w55rfs27t1 logo
w55rfs27t1b -10- 4. design information 4.1 w55rfs27t1b reference design 4.1.1 txout waveform 1 ? ke y 16 power down 2 1 ? 16 2 ant txout 1 ? 16 2 ant txout test test any key pressed test=0 test=1 s t o p
w55rfs27t1b publication release date:may 24, 2005 - 11 - revision a3 4.1.2 application circuit for 6 control functions set test = 0. 1. use this circuit when f1 and f2 are required (i.e., when more than 4 functions are required). 2. when a 9-v battery is used, an external power switch is required to save power. 3. leds require extra components. {doc} {revcode} w55rfs27t3b application circuit (49mhz) a 11 tuesday, july 06, 2004 title size document number rev date: sheet of vdd vsply vdd vdd vdd vdd vdd dependent on antenna led control circuit overtone crystal input protection for 49mhz * 27mhz,(l1,c7)= (56nh, 470pf), (l7,c33)=none * 35mhz,(l1,c7)= (47nh, 360pf), (l7,c33)=(3.3uh,47n) * 40mhz,(l1,c7)= (47nh, 300pf), (l7,c33)=(2.2uh,47n) * 49mhz,(l1,c7)= (39nh, 240pf), (l7,c33)=(1uh,47n) id0 id1 1n4148 d2 l2 1uh jp7 id1 1 2 3 300 r5 jp6 id0 1 2 3 antenna r1 20k c7 240p sw1 forward 1n4148 d1 c19 47n sw2 backward l7 1uh r4 1k led led1 + c18 10u c13 47n 100u c0 sw3 left turn sw5 f1 l1 39nh r3 1k 49.86mhz c8 7p c9 7p c33 47n sw6 f2 sw4 right turn u1 w55rfs27t3b txout 14 x2 11 cksel0 3 vdd 8 vss 7 ant 6 cksel1 5 reset 9 s4 2 s3 1 s2 16 s1 15 id1 12 id0 13 test 4 x1 10 jp3 power in 1 2 bt1 bat s1 s1 cksel0 txout id1 s2 s2 id0 txout txout cksel1 cksel0 cksel1 s2 s1
w55rfs27t1b -12- w55rfs27t1b application schematic bom(6-function): item qty reference part ________________________________________________________________________________ 1 1 c7 240p 2 2 c8,c9 7p 3 3 c13,c19,c33 47n 4 1 c18 10u 5 1 l1 39nh 6 2 l2,l7 1uh 7 1 r1 20k 8 1 u1 w55rfs27t1b 9 1 y1 49.86mhz 10 1 led1 led (optional) 11 1 c0 100u (optional) 12 2 d2,d1 1n4148 (optional) 13 1 r5 300 (optional) 14 2 r4,r3 1k (optional) 4.1.3 application circuit for 4 control functions set test = 1. 1. only 4 functions are provided. 2. the external power switch is not required when using a 9-v battery. 3. leds can be direct ly driven by txout.
w55rfs27t1b publication release date:may 24, 2005 - 13 - revision a3 {doc} {revcode} w55rfs27t1b application circuit (49mhz) a 11 tuesday, may 04, 2004 title size document number rev date: sheet of vdd vdd vdd vdd vdd dependent on antenna overtone crystal for 49mhz * 27mhz,(l1,c7)= (56nh, 470pf), (l7,c33)=none * 35mhz,(l1,c7)= (47nh, 360pf), (l7,c33)=(3.3uh,47n) * 40mhz,(l1,c7)= (47nh, 300pf), (l7,c33)=(2.2uh,47n) * 49mhz,(l1,c7)= (39nh, 240pf), (l7,c33)=(1uh,47n) id0 id1 vdd l2 1uh jp7 id1 1 2 3 jp6 id0 1 2 3 antenna r1 20k c7 240p l7 1uh c13 47n sw3 left-turn l1 39nh 49.86mhz c8 7p c9 7p c33 47n sw4 right-turn u1 w55rfs27t1b txout 14 x2 11 cksel0 3 vdd 8 vss 7 ant 6 cksel1 5 reset 9 s4 2 s3 1 s2 16 s1 15 id1 12 id0 13 test 4 x1 10 led led1 300 r5 sw1 forward sw2 backward d3 4.3v r5 120 bt1 9v c19 47n + c18 470u d2 1n4148 d1 1n4148 d4 1n4148 d3 1n4148 cksel0 id1 id0 txout cksel1 cksel0 cksel1 txout
w55rfs27t1b -14- 4.1.4 application circuit for fcc {doc} {revcode} w55rfs27t1b application circuit for fcc(27mhz) a 11 wednesday, july 14, 2004 title size document number rev date: sheet of vdd vdd fundamental crystal dependent on antenna l2 5.6uh antenna c8 100p c13 100p sw3 left-turn l1 270nh sw4 right-turn u1 w55rfs27t1b txout 14 x2 11 cksel0 3 vdd 8 vss 7 ant 6 cksel1 5 reset 9 s4 2 s3 1 s2 16 s1 15 id1 12 id0 13 test 4 x1 10 led led1 300 r5 sw1 forward sw2 backward bt1 2.2~5.5v c19 47n + c18 100u l3 2.2uh c7 100p c6 15p l4 2.2uh 27.145mhz txout txout
w55rfs27t1b publication release date:may 24, 2005 - 15 - revision a3 4.2 uc-mode control signal
w55rfs27t1b -16- 4.3 w55rfs27t family fcc certification
w55rfs27t1b publication release date:may 24, 2005 - 17 - revision a3 5. revision history version date page description a1 2004/5/27 - preliminary version a2 2004/715 - released version a2 a3 2005/5/10 - revised by brand and add important intoce important notice winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical impl antation, atomic energy control instruments, airplane or spaceship instruments, transporta tion instruments, traffic signal instruments, combustion control instruments, or for other app lications intended to support or sustain life. further more, winbond products are not intended for applications wherein failure of winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify winbond for any damages resulting from such improper use or sales. headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5665577 http://www.winbond.com.tw/ taipei office tel: 886-2-8177-7168 fax: 886-2-8751-3579 winbond electronics corporation america 2727 north first street, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-5441798 winbond electronics (h.k.) ltd. no. 378 kwun tong rd., kowloon, hong kong fax: 852-27552064 unit 9-15, 22f, millennium city, tel: 852-27513100 please note that all data and specifications are subject to change without notice. all the trade marks of products and companies mentioned in this data sheet belong to their respective owners. winbond electronics (shanghai) ltd. 200336 china fax: 86-21-62365998 27f, 2299 yan an w. rd. shanghai, tel: 86-21-62365999 winbond electronics corporation japan shinyokohama kohoku-ku, yokohama, 222-0033 fax: 81-45-4781800 7f daini-ueno bldg, 3-7-18 tel: 81-45-4781881 9f, no.480, rueiguang rd., neihu chiu, taipei, 114, taiwan, r.o.c.

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