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W55MID50 nuvoton technology corp. , 1 revision: a 7 .0 publish dat e: ma y 20 16 - 1 - revision a1 nuvoton mfid reader W55MID50 data sheet the information described in this document is the exclusive intellectual property of nuvoton technology corporation and shall not be reproduced without permission from nuvoton. nuvoton is providing this document only for reference purposes of mfid based system design. nuvoton assumes no responsibility for errors or omissions. all data and specifications are subject to change without notice. for additional information or questions, please contact: nuvoto n technology corporation. www.nuvoton.com
W55MID50 nuvoton technology corp. , 2 revision: a 7 .0 publish dat e: ma y 20 16 - 2 - revision a1 table of contents general description 3 1.1 W55MID50 features ................................ ................................ ................................ ................................ ..... 3 1.2 W55MID50 pin description ................................ ................................ ................................ .......................... 4 1.3 W55MID50 package information ................................ ................................ ................................ .................. 5 system description 7 2.1 W55MID50 system block diagram ................................ ................................ ................................ .............. 7 2.2 W55MID50 functional description ................................ ................................ ................................ .............. 7 electronic characteristics 8 3.1 W55MID50 absolute maximum ratings ................................ ................................ ................................ ...... 8 3.2 W55MID50 dc characteristics ................................ ................................ ................................ ..................... 8 3.3 W55MID50 ordering information ................................ ................................ ................................ ................. 8 3.4 application schematic ................................ ................................ ................................ ................................ ... 9 3.4 faq ................................ ................................ ................................ ................................ ............................... 9 3.5 W55MID50 data sheet document history ................................ ................................ ................................ . 10 appendix 11 4 .1 fcc approval ................................ ................................ ................................ ................................ .............. 11
W55MID50 nuvoton technology corp. , 3 revision: a 7 .0 publish dat e: ma y 20 16 - 3 - revision a1 general description nuvoton mfid (magnetic field identification) series is used in all areas of automatic data capture allowing contactless identification of objects using magnetic field. from ticketing to industrial automation and access control, the applications of mfid are burgeoning. in recent years automatic identification procedures have become very popular in many service industries, purchasing and distribution logistics, industry, manufacturing companies and ma terial flow systems. W55MID50 is one of series in nuvoton mfid family that supports multi - functional reader solution and especially focus on toy, security, and consumer related applications. the applications with nuvoton mfid tag series such as w55mid10 t hat provides read - only mask rom - id version transponder for mass production solution in toy industrial, meanwhile w55mid15 provides the other solution for manufacture option, which is 243 bonding - id selection transponder. besides the single tag transponder application, w55mid35 offers multi - transponder recognition function for intelligent and smart toy applications. W55MID50 provides a wide variety of applications for toy, security, and consumer market meanwhile the W55MID50 is the most cost effective soluti on on current mfid related application market. 1.1 W55MID50 features ? magnetic field resonance frequency: 13.56 mhz ? data clock: 22 ~ 66 khz ? inductive coupled power supplies for transponder's no battery operation ? on - chip rectifier, voltage limiter, clo ck extraction, power management, uc interface ? provides nrz and manchester coding data format ? adjustable 4 - level of reader transmission power selection ? provides serial and parallel mode uc interface ? uc data output rate 1mbps ? low power, low voltage operati on ? supports power - down mode 1ua ? operating distance: 0 ~ 10cm ? operating voltage: 2.4v ~ 5.5v ? operating temperature: 0 ~ 70 ? c ? package: dice form, pdip - 20, sop - 20 ? reference design pc board size: 2.0x2.0cm 2 (without pcb antenna) ? nuvoton patented "automatic reader transmission power adjustment" for reader optimum transmission power adjust minimize external components
W55MID50 nuvoton technology corp. , 4 revision: a 7 .0 publish dat e: ma y 20 16 - 4 - revision a1 1.2 W55MID50 pin description symbol p ad no. i/o functional description d3 1 o data output #3 d2 2 o data output #2 d1 3 o data outpu t #1 d0 4 o data output #0 xin 5 i connect to external 13.56 mhz oscillator xout 6 o connect to external 13.56 mhz oscillator vss 7 gnd digital power return path cmd 8 i/o r/w configuration register clk 9 i command r - w/ read data clock vdd 10 powe r power path rx_vdd 11 power power path of rx rx_vss 12 gnd power return path of rx env 13 i envelope detector input reset 14 i reset , low active. tagin 15 o indication of tag arrival coil 16 o pa output to connect with pcb antenna tx_vss 17 gnd pow er return path of pa tx_vdd 18 power power path of pa
W55MID50 nuvoton technology corp. , 5 revision: a 7 .0 publish dat e: ma y 20 16 - 5 - revision a1 1.3 W55MID50 package information sop20 (300mil) pin assignment sop20 (300mil) package dimension
W55MID50 nuvoton technology corp. , 6 revision: a 7 .0 publish dat e: ma y 20 16 - 6 - revision a1 e 1 20 11 10 control demensions are in milmeters . ? e
W55MID50 nuvoton technology corp. , 7 revision: a 7 .0 publish dat e: ma y 20 16 - 7 - revision a1 system description 2.1 W55MID50 system block diagram 2.2 W55MID50 functional description transmission power amplifier (pa) it provides 4 different selectable transmission power for reader chip to support mfid tag's radiation power supply. the external inductor coupling circuit is designed for 13.56 mhz magnetic field resonance . the coupled center frequency will depend on equivalent value of external pcb inductor and capacitor. envelope detector & analog front end the major function of this unit provides mfi b tag's d ata can be extracted. voltage regula tor the voltage regulator generates the system needs of device power supply. configuration register system configuration register controls the all functional settings of W55MID50 such as tag data format, tag detection cycle, output data format, and pa t ransmission power selection. reset and power - down control the function of system power - down control mode is normally used for power consumption saving. crystal oscillation the 13.56 mhz system clock generator generates the need of device system clock. command extractor configuration register data - buff. output data - buff. i envelope detector & analog front end oscillation circuit 13.56 mhz voltage regulator preamble & data clk generator decoder (nrz/ man.) reset & power down control pa data - buff. ii txd
W55MID50 nuvoton technology corp. , 8 revision: a 7 .0 publish dat e: ma y 20 16 - 8 - revision a1 decoder nrz/manchester this unit is in charge of tag data format decoder, which can provide tag - id data format decoding of nrz or manchester. data buffer and output this unit buffers the tag - id data, which is under de - frame processing. electronic charact eristics 3.1 W55MID50 absolute maximum ratings parameter rating unit maximum current in coil 10 ma power dissipation (t a = 70 ? ? ? note: exposure to conditions beyond th ose listed under absolute maximum ratings may adversely affect the life and reliability of the device. 3.2 W55MID50 dc characteristics (vdd - vss = 4.5 v, ta = 25 ? c; unless otherwise specified) parameter sym. conditions min. typ. max. unit operating m agnetic field f op field in resonation - 13.56 - mhz operating voltage v dd field in resonation 3 - 5.5 v operating temperature tamb ambient operating temp 0 25 70 ? c operating current i op f op = 13.56 mhz - 22 - ma stand - by current i sb power down mode en ter - 0.7 1 ua sink current i sk vol = 0.3vdd - 10 - ma source current i sr voh = 0.7vdd - - 6 - ma 3.3 W55MID50 ordering information W55MID50 provides two types of package in shipment: dice form, pdip - 20, sop - 20, and wafer part number package remarks W55MID50 dice form W55MID50 d20 pdip - 20 W55MID50 s20 sop - 20 W55MID50 wafer form moq required
W55MID50 nuvoton technology corp. , 9 revision: a 7 .0 publish dat e: ma y 20 16 - 9 - revision a1 3.4 application schematic 3.4 faq q. what "mfid" means? a. "mfid" magnetic field identification, which is a nuvoton contactless identification chip prod uct series. there are many application, architecture, and circuit design patented by nuvoton. q. what different between w55mid15 and w55mid35? a. w55mid15 is a single - tag application without "anti - collision" algorithm build - in. w55mid35 is a multi - tag application with "anti - collision" algorithm build - in. q. what is the operating frequency? a. both w55mid15 and w55mid35 are operating on 13.553 mhz ~ 13.567 mhz ism. q. does W55MID50 reader ic pass fcc compliance testing? a. W55MID50 pass fcc complian ce test of section 15.209 and section 15.225. q. how are w55mid15 and w55mid35 ids generated? a. w55mid15 and w55mid35 ids are generated by manufacturing bonding option of pads rs0 ~ rs4. q. how many w55mid15 and w55mid35 ids are generated? a. there are total 243 bonding option ids for w55mid15 and w55mid35. q. how are w55mid15 and w55mid35 ids read? vss whs-55mid50v0.4pc + c6 100u c11 0.1u c23 0.1u c24 0.1u vdd pcb antenna w55mid10.r2 c2 30p c1 68p > 20 volts u1 W55MID50 d0 4 d1 3 d2 2 d3 1 xin 5 xout 6 cmd 8 clk 9 tagin 17 vss 7 vdd 10 txvdd 20 coil 18 txvss 19 env 15 /reset 16 rxvdd 13 rxvss 14 nc 11 nc 12 c1 0.1u l1 4.7u c3 250p d2 1n4148 d1 1n4148 r1 270k c5 750p c4 27p lpf env coil l3 1u (fb) txvdd + c15 47u + c17 47u c16 0.1u c18 0.1u l5 1u (fb) rxvdd + c19 47u + c21 47u c20 0.1u c22 0.1u vdd txvdd vss vss env coil rxvdd vss vss 100p 100p 100p d2 d3 d1 y1 13.56mhz c12 10p c13 10p d0 tin clk cmd res 10p 1u 10p * for fcc solution * for fcc solution * for fcc solution s1 res vdd vdd jp2 con12 1 2 3 4 5 6 7 8 9 10 11 12 d3 d2 d1 d0 cmd clk tin
W55MID50 nuvoton technology corp. , 10 revision: a 7 .0 publish dat e: ma y 20 16 - 10 - revision a1 a. W55MID50 is a function of mfid reader ic. w55mid15 and w55mid35 automatically respond with its id when it is coupled by magnetic resonance po wer from reader. q. is it possible to read multiple mfid chips in the same magnetic area? a. w55mid35 has been implemented by "anti - collision" algorithm to allow more than one ids can be simultaneously recognized in the same magnetic area. q. how m any w55mid35 ids can be simultaneously read in the same magnetic area? a. actually, there is no any limitation in total number of w55mid35 tags can be simultaneously read, if the reader system can provide sufficient coupled magnetic resonance power t o every w55mid35 tag, q. does anything interfere with mfid chip readout operation? a. w55mid series is operating on 13.553 mhz ~ 13.567 mhz, therefore it is far away from 27 mhz and 2.45ghz. there is no any interference with w55midseries. 3.5 w55 mid50 data sheet document history version date substantial change s page a 1.0 2002/ 0 9/15 preliminary version a 1.0 a1 .1 2002/12/29 pin functional description update a1 .1 a2 .0 2003/ 0 2/ 0 7 general description update a2 .0 a3 .0 2003/ 0 3/23 fcc compliance test ing report a3 .0 a 4.0 200 5 / 08 / 15 add important notice a 4.0 a 5.0 200 5 / 08 / 19 application circuit modify to consistence with demo module board. a 5.0 a6.0 2009/03/06 change company logo a6.0 a7.0 2016/05/26 add sop20 package information and update package p art no. a7.0
W55MID50 nuvoton technology corp. , 11 revision: a 7 .0 publish dat e: ma y 20 16 - 11 - revision a1 appendix 4 .1 fcc approval
W55MID50 nuvoton technology corp. , 12 revision: a 7 .0 publish dat e: ma y 20 16 - 12 - revision a1 important 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 instrument s, the control or operation of dynamic, brake or safety systems designed for vehicular use, traffic signal instruments, all types of safety devices, and other applications intended to support or sustain life. all insecure usage shall be made at customer s risk, and in the event that third parties lay claims to nuvoton as a result of customers insecure usage, customer shall indemnify the damages and liabilities thus incurred by nuvoton.

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