MF RC500 2005 2-1 - MIFARE MF RC500
MF RC500... 4 1.... 4 2.... 4 2.1... 4 2.2... 4 2.3 MIFARE... 5 2.3.1... 5 2.3.2 RWD CARD... 6 2.3.3 Card RWD... 7 3 MF RC500... 10 3.1... 10 3.2... 12 3.3... 13 3.3.1 EMC... 13 3.3.2... 13 3.3.3... 14 3.4 50Ω... 18 3.4.1 EMC... 18 3.4.2... 18 3.4.3 50Ω full range solution... 18 3.4.4 50Ω... 19 3.4.5 50Ω... 20 4... 22 4.1... 22 4.2... 23 4.3... 23 5... 23 5.1.1... 23 5.1.2... 24 5.1.3... 25 6.1... 28 6.1.1 EMC... 28 6.2... 28 6.3... 28 6.3.1... 28 6.3.2... 30 6.3.3... 30 6.4 50Ω... 31 6.4.2... 32 6.4.3... 33-2 - MIFARE MF RC500
7... 35 7.1... 35 7.1.1... 35 7.1.2 50Ω... 36 7.2 checking... 41 8 references... 43 9 A...43 9.1... 43 9.2... 44 9.3... 45-3 - MIFARE MF RC500
MF RC500 1. MF RC500 MIFARE IC MIFARE ISO 14443A MIFARE RF RF 2. 2.1 MF RC500 13.56MHz MF RC530 ISO 14443 2-1 MF RC500 Parrallel ucontroller Interface Crypto 1 Security & Key Memory Status & Control Data Processing Analog Circurity Intergrated Demodulator Bit-Decoder Output Drivers MF RC500 2-1 MF RC500 u-controller 8 CRC/ MF RC500 ISO 14443 Crypto1 MIFARE Crypto1 key-sets 100mm 2.2 MIFARE RC500 MIFARE reader 2-2 reader IC 50-4 - MIFARE MF RC500
1 1 1 1 2-2 2.3 MIFARE MIFARE ISO 14443-Type A 1 MIFARE MIFARE transformer principlemifare 1 overview MIFARE RF Interface Energy transmission Transformer priciple; MIFARE card passive Operating frequency 13.56MHz Communication structure Half duplex, reader talks first Data rate 105.9 khz Data transmission Both directions RWD Card 100% ASK, Miller Coded Card RWD subcarrier load modulation, subcarrier frequence 847.5kHz, Manchester Coded MIFARE 2.3.1 MIFARE - 5 - MIFARE MF RC500
2-3 2-3 RWD I MIFARE A 2.3.2 RWD CARD MIFARE talk 100% ASK pulse pause ISO 14443 Type A 2-4 2-4 Data Transmission RWD to CARD typical signal shape Q 2-5 Q MIFARE MIFARE Miller Code 2-6 Miller Code - 6 - MIFARE MF RC500
2-4 Data Transmission RWD to CARD Miller Coding MIFARE 105.9KHz1 9.44µs 1 3µs 1 0 1 1 0 3µs 0 1 1 0 2.3.3 Card RWD 2.3.3.1 Subcarrier Load Modulation Principle RWD load modulation 2-7 RWD load or resistance - 7 - MIFARE MF RC500
2-7 Subcarrier Load Modulation Principle MIFARE 13.56MHz f R RWD 60dB MIFARE sub-carrier f SUB direct load modulation 13.56MHz f SUB side-bands MIFARE Manchester 2-8 MIFARE card 105.9kHz 9.44µs 1 0 MIFARE f SUB f R /16 847.5 khz To To 1/f R 74ns - 8 - MIFARE MF RC500
2-8 Principle Data Coding card to RWD time domain 2 14.41MHz 12.74MHz 2-9 2-9 Data Coding card to RWD Frquency domain - 9 - MIFARE MF RC500
3 MF RC500 3.1 MF RC500 100mm RF straightforward 3-1 50Ω 10m - 10 - MIFARE MF RC500
3-1 Design Help 2 50Ω 50Ω 100mm 50mm - 11 - MIFARE MF RC500
2 Comparison of antenna concepts Concept 50Ω mateched Directly matched Full range Short range MF RC500 EMC-Circuit Same circuitry and values Antenna Reader Receiving Same circuit and values circuit Impedance Using TX1 and Using only TX1 Transformation TX2 Cable 50Ω coaxial Short wire or directly connected Antenna Same circuit, but different values Same circuit, but different matching depending on the antenna size values depending on the circuitry antenna size Antenna coil Operating distance depends on the Oprating distance depends on antenna size and environmental the antenna size and influence environmental influences Antenna Shielding depends on the application, e.g. the housing and shielding environmental influences 3.2 MIFARE A MIFARE 2 3 MIFARE 1 coupling coefficient k MIFARE A k rule of thumb - 12 - MIFARE MF RC500
k MIN 0.3 3-2 / 20cm R 10cm 3-2 Antenna Radius versus oprating distance 3.3 2 100mm EMC MIFARE 3-3 3.3.1 EMC MIFARE 13.56MHz 13.56MHz multi-layer layout 3-3 L 0 C 0 3 3.3.2 MF RC500 both side-bands V MID R X V MID R X V MID - 13 - MIFARE MF RC500
3-3 R 1 R 2 C 3 C 4 3 3-3 complete direct matched antenna configuration 3 value of the EMI Filter and Receiving Circuit Components Value Remark L 0 2.2 ΩµH 10% Magmetic shielded e.g. TDK ACL3225S-T C 0 47pF 2% NP0 material R 1 R 2 820Ω 5% 2.7kΩ 5% C 3 15pF 2% NP0 material C 4 100nF 2% NP0 material 3.3.3 MF RC500-14 - MIFARE MF RC500
3.3.3.1 3-4 L a L b R a R b C a C b L a L b 3-4 Tx11 Tx12 L ant R ant C ant 3-4 Equivalent circuit of an antenna coil for a directly matched antenna Q C ant A MIFARE 13.56MHz A R ant 3.3.3.2 L ant R ant L ant R ant Q ω R L ant / R ant ω R 2π f R Q 50 100 2.3.2 MIFARE 105.9kHz/sec RWD - 15 - MIFARE MF RC500
T 3µs B B f R / Q - B T 1 Q Q f R T 13.56MHz 3µs 40.68 Q 35 Q R EXT 3-5 R EXT R EXT ω R L ant / Q R ant ω R L ant / 35 R ant centre tap 3-5 3-5 External resistance to reduce the antenna s quality factor 3.3.3.3 3-6 C s C p 4-16 - MIFARE MF RC500
3-6 complete matching circuit 4 Starting Values for the antenna matching circuit L ant [ µh] C s [ pf] C p1 [ pf] C p2 [ pf] 0.8 27 270 330 0.9 27 270 270 1.0 27 220 270 1.1 27 180 22 220 1.2 27 180 180 22 1.3 27 180 180 1.4 27 150 180 1.5 27 150 150 1.6 27 120 10 150 1.7 27 120 150 1.8 27 120 120 15pF C s C p NP0 2% PCB distance between the turns shield layer C p 7.1.1-17 - MIFARE MF RC500
3.4 50Ω 2 2 50Ω EMC long-and the short-range impedance transformation 50Ω 3.4.1 EMC MIFARE 13.56MHz 13.56MHz multi-layer layout 3-7 L 0 C 0 5 3.4.2 MF RC500 both side-bands V MID R X V MID R X V MID 3-7 R 1 R 2 C 3 C 4 5 5 value of the EMI Filter and Receiving Circuit Components Value Remark L 0 1.0µH 10% Magmetic shielded e.g. TDK ACL3225S-T C 0 47pF 2% NP0 material R 1 R 2 820Ω 5% 2.7kΩ 5% C 3 15pF 2% NP0 material C 4 100nF 2% NP0 material 3.4.3 50Ω full range solution 50Ω MF RC500 EMC MF RC500 50Ω MF RC500 T X1 T X2 ground unsymmetrical potential 3-7 L 0 C 0 EMC L 0 C 0 C 1 T-Filter 50Ω B1 1:1 50Ω C2b that tuning capacitance to the maximum output voltage at the antenna MF RC500 T X1 T X2-18 - MIFARE MF RC500
30Ω smith 3-7 Full Range Solution 50Ω impedance transformation 50Ω EMC 50Ω 6 6 Type50-1 Value for the impedance transformation Components Value Remark C 1 82pF 2% NP0 material C 2a 69pF 2% NP0 material C 2b 0~30pF B 1 1:1 Transformer e.g. Coilcraft 1812WBT-3 3.4.4 50Ω 50Ω 1 stage T X1 T X2 3-8 L 0 C 0 EMC L 0 C 0 C 1 T-Filter 50Ω - 19 - MIFARE MF RC500
C 1b C 1 EMC 50Ω 7 7 Values for the impedance transformation Components Value Remark C 1a 69pF 2% NP0 material C 1b 0~30pF NP0 material 3.4.5 50Ω 50Ω A 50Ω 13.56MHz 3.4.5.1 3-9 L ANT R ANT C ANT 3-9 Equivalent circuit of an antenna coil Q C ant A MIFARE 13.56MHz A R ant 3.4.5.2-20 - MIFARE MF RC500
L ant R ant L ant R ant Q ω R L ant / R ant ω R 2π f R Q 50 100 2.3.2 MIFARE 105.9kHz/sec RWD T 3µs B B f R / Q - B T 1 Q Q f R T 13.56MHz 3µs 40.68 Q 35 Q R EXT 3-10 R EXT 3-10 External resistance R EXT R EXT ω R L ant / Q R ant ω R L ant / 35 R ant 3-11 50Ω 50Ω - 21 - MIFARE MF RC500
3-11 C s C p C s C p SMD with NP0 dielectrcum for C p C p 10~20pF 4 4.1 10CM 3 R/W - 22 - MIFARE MF RC500
3cm for reduced R/W distance and for close metal ferrite shielding is a must 4.2 MIFARE MIFARE R/W 30 10 4.3 R/W (SMD NPO ) 5 PCB ferrite shielding will not increase oprating distance above values avaliable in non-metalic environment 5.1.1 5.1.1.1 PCB 4 EMC - 23 - MIFARE MF RC500
5.1.1.2 50 PCB 4 EMC PCB PCB 5.1.2-24 - MIFARE MF RC500
13.56MHz ma 5.1.3 PCB X : 7.5 1 1 5-4 H diso 14443 Hmin=1.5A/m - 25 - MIFARE MF RC500
5-5 5-6 ( R =40) ISO14443 Hmin - 26 - MIFARE MF RC500
5-7 5-27 - MIFARE MF RC500
MF RC500 PCB 6.1 6.1.1 EMC L 0 C 0 MF RC500 MF RC500 T X1 T X2 EMC C 0 MF RC500 TGND ground plane with multiple vias for connection 6-1 MF RC500 6.2 EMC 6.3 6.3.1 =115*115mm Lant t.b.d. Cant.b.d. Rant t.b.d. Cs t.b.d. Cp t.b.d. Rext t.b.d. - 28 - MIFARE MF RC500
- 29 - MIFARE MF RC500
6.3.2 78.5X67mm Lant t.b.d. Cant.b.d. Rant t.b.d. Cs t.b.d. Cp t.b.d. Rext t.b.d. 6.3.3 6-5 - 30 - MIFARE MF RC500
6.4 50 =115*75mm Lant=330nH Cant=20.2pF Rant=0.25 Cs=47pF 3.3pF Cp=270pF 68pF Rext=0.5-31 - MIFARE MF RC500
6.4.2 =15cm Lant=545nH Cant=25.4pF Rant=0.32 Cs=33 4.7pF Cp=220 8.2pF Rext=1.0-32 - MIFARE MF RC500
6.4.3 =15cm;3 PCB Lant=460nH Cant=38.7pF Rant=0.53 Cs=39 3.3pF Cp=180 15pF Rext=0.5-33 - MIFARE MF RC500
- 34 - MIFARE MF RC500
7 PCB 7.1 7.1.1 7-1 4-35 - MIFARE MF RC500
7.1.2 50 50 7.1.2.1 ( HP4195) 50 7-2 1-30MHz Cs Cp - 36 - MIFARE MF RC500
13.56MHz 7.1.2.2 50 Cp Lant Rant Lant Rant 3 4 5 40% Cs Cp Cs Cp 20% - 37 - MIFARE MF RC500
7-4 50 2% 50 BNC Cy-probe Cx-probe Lissajous Lissagous 50 Wave form Sinusoidal Frequency 13.56MHz Amplitude 2V-5V - 38 - MIFARE MF RC500
x-probe Cxprobe y-probe Cyprobe Lissajous Ccal 50 50 BNC Lissajous Ccal Cy-probe Y-probe x-probe x-probe y-probex-scale 2V/DIV y-scale 1V/DIV Lissajous 45 Step 2 C s C p Lissajous Lassajous Lissajous Lissajous 50Ω 7-6 50Ω - 39 - MIFARE MF RC500
Lissajous figure figure X Y 45 Z 50Ω 45 Z 50Ω 7-7 f LOW Z 50Ω φ 0 Z 50Ω 7-7 Cs Cp 40% 7-8 - 40 - MIFARE MF RC500
7.2 checking 7-8 50Ω check 50MHz 7-9 - 41 - MIFARE MF RC500
7-9 CH1 CH2 MIFARE NPAUSE0 CH2 7-10 8 t 2 special interest 90% 5% R EXT 5% t 2 1.4µs 1.4µs Q 35 R EXT t 2 0.7µs Q R EXT - 42 - MIFARE MF RC500
7-10 ISO 14443 8 ISO 14443 Pulse length t1 [µs] t2 [µs] t3 [µs] t4 [µs] T1 MAX 3.0 1.4 1.0 0.4 T1 MIN 2.0 0.7 1.0 0.4 8 references [1] Data Sheet MIFARE MF RC500 Highly Intergrated ISO 14443A Reader IC [2] ISO 14443 Identification cards-contactless integrated circuit cards-proximity cars,part 1-4 9 A 9.1 ASK EMC ISO 14443 MIFARE Classic MIFARE Pro RWD Amplitude shift keying Proximity Card MIFARE MIFARE / MIFARE - 43 - MIFARE MF RC500
9.2 shape l 1 D 1 K N 1 ln length of the conductor loop of one turn Diameter of the wire or width of the PCB conductor respectively =1.07 =1.47 Natural logarithm function PCB N 9-1 5cm - 44 - MIFARE MF RC500
9-1 9.3 MIFARE 13.56MHz R DC The skin effect The relevant depth copper material to 18 R ANT R ANT 5 R DC R ANT - 45 - MIFARE MF RC500