Features • • • • • • • Low-power, Low-voltage CMOS Rectifier, Voltage Limiter, Clock Extraction On-chip (No Battery) Small Size Factory Laser Programmable ROM Operating Temperature Range -40°C to +125°C Radio Frequency (RF): 100 kHz to 450 kHz Transmission options – Code Length: 128, 96, 64, 32 bits – Bitrate [bit/s]: RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/80, RF/100, RF/128 – Modulation: FSK, PSK, BIPH, Manchester, BIPH-FSK • FDX-B Compatible Coding Possible (ISO 11784/ ISO 11785) Figure 1. Application RF transmitter and interrogator 128-bit Read-only IDIC for RF Identification IDIC RF e5530 e5530 ID Description The e5530 is part of a closed coupled identification system. It receives power from an RF transmitter which is coupled inductively to the IDIC. The frequency is typically 100 kHz to 450 kHz. Receiving RF, the IDIC responds with a data stream by damping the incoming RF via an internal load. This damping-in-turn can be detected by the interrogator. The identifying data are stored in a 128-bit PROM on the e5530, realized as an array of laser-programmable fuses. The logic block diagram for the e5530 is shown in figure 2. The data are output bit-serially as a code of length 128, 96, 64 or 32 bits. The chips are factory-programmed with a unique code. Figure 2. Block Diagram Analog front end Mod Coil Clk Data R7 R6 R5 R4 R3 R2 R1 R0 128-bit PROM C15 C14 C13 C12 C11 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 C0 Clock extractor Modulator FSK PSK BIPH Manchester Row decoder Load Coil Rectifier Bitrate VDD VSS A6 A5 A4 A3 A2 A1 A0 Column decoder Counter Rev. 4508B–RFID–02/02 1 Chip Dimensions Figure 3. Chip Size Figure 4. Pinning SO8 0.175 mm Coil 2 e5530 1.17 mm 0.447 mm Coil 1 Coil 2 Pad: 150 µ x 150 µ (Metal: 99% Al, 1% Si 8 1 2 Coil 1 7 e5530 3 6 4 5 Padwindow: 138 µ x 138 µ 1.62 mm Thickness: 15 mils Note: Pins 2 to 7 have to be open. They are not specified for applications Name Pad Window Function Coil1 138 × 138 µm2 1st coil pad Coil2 138 × 138 µm2 2nd coil pad Functional Description Read Operation After power up, once the e5530 has detected the incoming RF field, the IC continuously transmits the identification code as long as the RF signal is applied. The transition from the last bit to bit 1 of the next sequence occurs without interruption. Data is transmitted by damping the incoming RF signal by an internal load. These load changes are detected by the reader station. Different kinds of modulation and bitrates are optionally available. Rectifier For internal power supply, an on-chip bridge rectifier is used which consists of two diodes and two n-channel transistors. A Zener diode, which protects the circuit against overvoltage on the coil inputs, and a smoothing capacitor for the internal supply are also provided. Damping Load Incoming RF will be damped by the power consumption of the IC itself and by an internal load, which is controlled by the modulator. The loads are p-channel transistors connected between VDD and the coil inputs. The IDIC includes mask options for the load circuit: single-side, double-side and alternate-side modulation. There are four modulation methods available which can be selected by fuses. The corresponding timing diagram is shown in Figure 5. 2 e5530 4508B–RFID–02/02 e5530 FSK Modulation Logical data “1” and “0” are represented as two different frequencies of damping. The frequency for “1” is RF divided by 10, a “0” divides RF by 8. PSK Modulation The external coil is damped with a carrier frequency of RF/2. A logical “1” causes (at the end of the bit period) a 180° phase shift on the carrier frequency, while a logical “0” causes no phase shift. Biphase Modulation Logical “1” produces a signal which is the same as the internal bitclock. A logical “0” produces no signal change in the middle of the bit period. Manchester Modulation A logical “1” causes a rising edge in the middle of a bit period (i.e., switch damping off), while a logical “0” causes a falling edge (i.e., switch damping on). A combination of Biphase- and FSK-modulation is also optionally available. The available combinations between the modulation types and the bitrates are shown in Table 1 “Transmission Options”. Table 1. Transmission Options Modulation Carrier Frequency (CF) Bitrate [bit/s] FSK RF/8, RF/10 RF/32, RF/40, RF/50, RF/64, RF/80, RF/100, RF/128 PSK RF/2 CF/4, 8, 16, 32 Biphase RF/8, RF/16, RF/32, RF/64, RF/100, RF/128 Manchester RF/8, RF/16, RF/32, RF/64, RF/100, RF/128 Figure 5. Timing Diagram for Modulation Options BitClk Data 1 0 1 1 0 0 1 FSK PSK Man Biph 3 4508B–RFID–02/02 Reading Distances The e5530 is able to operate from very weak fields. Nevertheless, there are some general rules which influence the achievable reading distance. • Best results are accomplished when the transponder points towards the reader coil. • The transponder should not be embedded in metal, which will reduce the applicable magnetic field and thus the reading distance. • The strength of the generated magnetic field and the sensitivity of the demodulator are the most important factors for a good reading distance. Figure 6. Example for a 64-bit Code E6 00 00 00 10 2D 72 5D Header 56-bit ID code The identification code is transmitted continously. After the RF field is applied, the e5530H-232 starts with the first bit (MSB) of the header byte ’E6hex’ (’1110 0110’), followed by a unique 56-bit serial number. No checksum is included in this sample code. Pulsing the RF field may reduce the synchronization task as the first byte transmitted is known already (i.e., E6hex). This is even feasible, if the first bit may be lost due to reader synchronization problems. Customer ID Code Selection In general the customer may choose any ID code suitable to his application. To avoid code duplication, Atmel will define a fixed header – i.e, the first 8 bits of the code – for each customer. Modes of Operation – Options For any new product variant, the customer has to select the following operation options which are configured in the laser ROM as well: • Bitrate, which is defined as field clocks per bit (e.g., RF/40 = 125 kHz/40 = 3.125 kBit/s) (see table Table 1 “Transmission Options”) • Modulation method (see Figure 5) • Code length: 32, 64, 96 or 128 bits For programming the ID code into the laser ROM, one of the following data has to be supplied: • ID code algorithm which is implemented in Atmel’s code management software (Atmel will generate the codes as requested) • Customer generated ID codes on floppy disk or per email/ftp. The format has to comply to the following rules: 4 – The ID code file is a plain ASCII text file. – The code files should be compressed. Please make self extracting files. – The code files are used in alphabetical order of their file names (including letters and numbers). Used - i.e. programmed - code files are discarded. – Each line of the code file must contain one ID code for one IC. – The code is in hexadecimal format. The code may contain spaces for better readability. e5530 4508B–RFID–02/02 e5530 – The code line is exactly as long as the selected code length (e.g. 64 bits 16 hex numbers). – The line must end with a carriage return. – The first 8 bits are fixed, this is the unique customer header which is defined by Atmel. – Each hexadecimal code entry must be preceded by a decimal serial number. Serial number and code must be separated by a space. – The serial number has to be unique and is up-counting to avoid double programming. – The series numbers of two consecutive files (file name!) has to count also for proper linking. Figure 7. Example of Two Code Files with Header = E6 and 64-bit Code Length FILE0000.TXT 00001 00002 00003 ... ... 12345 File name E65F34E25801904F E634E25801904FAA E6910AG7000010FE Code file E610ABE4F9014821 Last code Carriage return 8-bit header Space necessary Series number FILE0001.TXT 12346 E6A04EB73087FCC0 12347 E60178DC00F03460 ... Next code Absolute Maximum Ratings Parameters Symbol Value Unit Maximum current into Coil1 and Coil2 Icoil 10 mA Maximum power dissipation (dice) Ptot 100 mW (1) Maximum ambient air temperature with voltage applied Tamb -40 to +125 °C Storage temperature Tstg -65 to +200 °C Note: 1. Free-air condition. Time of application: 1 s Stresses above those listed under ‘Absolute Maximum Ratings’ may cause permanent damage to the device. Functional operation of the device at these conditions is not implied. 5 4508B–RFID–02/02 Electrical Characteristics Tamb = 25°C, reference terminal is VDD, operating voltage VDD - VSS = 3 V DC, unless otherwise specified No. Parameters Test Conditions 1 Operating voltage Condition for logic test 2 Operating temperature 3 Input frequency (RF) 4 Operating current fCLK = 125 kHz, VSS = -2 V ICC 5 Clamp voltage I = 4 mA VCL Note: Symbol Min. VSS Typ. Max. Unit -1.5 -5.0 V Tamb -40 125 °C fCLK 100 450 kHz 3 (1) 6.7 mA 10 V 1. Typical parameters represent the statistical mean values Figure 8. Measurement Setup for IDD I Figure 9. Simplified Damping Circuit DD 100 Ω VDD ~2V Coil 1 Coil 1 ~ = Mod 2V Coil 2 Coil 2 VSS 100 Ω ~2V V pp Coil @1.5 V Application Example Figure 10. Typical Application Circuit From oscillator I AC 125 kHz 740 µH 4.05 mH 390 pF Energy Input capacitance 5 pF static, 4 pF dynamic Coil1 (Pin 8) e5530 (SO8) Data To read amplifier Coil2 (Pin 1) 2.2 nF 6 e5530 4508B–RFID–02/02 e5530 Ordering Information Extended Type Number Package e5530H-232-DOW e5530H-232-DIT e5530H-232-S8 DOW DIT SO8 Manchester e5530H-zzz-DOW (1) e5530H-zzz-DIT (1) e5530H-zzz-S8 (1) DOW DIT SO8 defined by customer Note: Data Rate Modulation RF/32 Configuration Checksum 64-bit no checksum Header E6 ID Code fixed and unique code SPQ (Minimum Volume) Minimum Order Volume 10 kpcs 10 kpcs 1120 10 kpcs 10 kpcs 1120 > 600 kpcs p.a. > 600 kpcs p.a. > 400 kpcs p.a. 1. 1) Definition of customized part number basing on orders for first year volume (300 kpcs) 2) Definition of header, ID code, checksum etc. according to customers data base 3) 5.000 US$ initial cost for customer specific laser-fusing 4) Lead time 3 month 5) Low volume customized applications may be covered by TK5551-PP programming. With identical features of TK5530H-zzz-PP possible Order Code The full order code for the e5530is e5530H-zzz-pkg or e5530G-zzz-pkg, where zzz is a customer specific number defined by Atmel. pkg (package) defines the delivery form: - DOW factory programmed, tested unsawn, backlapped (15 mils) wafers - DIT cutted chips in wafflepack (Dice In Tray) - S8 SO8-packaged parts Samples: Atmel supplies e5530 samples, which are set to Manchester modulation at RF/32 with a 64-bit ID code (order code: e5530H-232 S8) Package Information Package SO8 Dimensions in mm 5.2 4.8 5.00 4.85 3.7 1.4 0.25 0.10 0.4 1.27 6.15 5.85 3.81 8 0.2 3.8 5 technical drawings according to DIN specifications 1 4 7 4508B–RFID–02/02 Atmel Headquarters Atmel Operations Corporate Headquarters Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel SarL Route des Arsenaux 41 Casa Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Atmel Asia, Ltd. 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