NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es NCD1015-50RO HDX robust 50 mm transponder Product data 2013 Nov 2013 Production 1/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es NCD1015-50RO HDX robust 50mm transponder 1 GENERAL DESCRIPTION NCD1015-50RO is a contact-less Read Only RFID device for single transponder applications in the area of electronic identification operating in the low frequency (134.2 kHz) range, supporting ISO 11784/85 standards. Return data transmission from the transponder to the reader utilises FSK encoded modulation. The NCD1015-50RO contains 64 bit identification data page 1 which is secured by an associated 16 bit CRC. The passive transponder uses the supplied RF signal to obtain the energy needed to send the 64bit ID code to the reader. FEATURES Air Interface: Contact-less, sequential power & data transmission (HDX) Radio Frequency fC : 134.2 kHz 1kHz Tag Reader transmission: FSK modulation, NRZ: ‘0’~134.2kHz; ‘1’~124.2kHz Tag Reader data rate: RF/16 (~ 8 kbit/s) On chip 16 bit CRC generator: Reverse CRC-CCITT as used in ISO/IEC 11785 Identification data page: 64 bits data + associated 16 bits CRC 2/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es 2 FUNCTIONAL OVERVIEW AND DESCRIPTION 2.1 POWER TRANSFER Power transfer to the tag is accomplished by magnetic coupling of the transponder and reader antenna. The reader and the transponder operate in a sequential mode with timely separated power and data transmission cycles. The RF operating field supplies power at the beginning of the request from the reader to the HDX transponder. During the charge (or powering phase) of between 15 and typically 50 ms the reader generates an electromagnetic field using a frequency of 134.2 kHz. The resonant circuit of the transponder is energised and the induced voltage is rectified by the integrated circuit to charge the capacitor CL. The transponder detects the end of the charge burst (EOB) and transmits its data using Frequency Shift Keying (FSK), utilising the energy stored in the capacitor CL. The charge phase is followed directly by the read phase. Figure 1: Charge and Read Phase - Voltage at the reader’s exciter and transponder coil 2.2 2.2.1 COMMUNICATION SIGNAL INTERFACE - TAG TO READER FREQUENCY The tag shall be capable to communicate with the reader via an inductive coupling, whereby the power is switched off and the data are FSK modulated using the frequencies: f0 = 134.2 for the data “Low Bit” encoding (ISO 11785 tolerance) f1 = 124.2 for the data “High Bit” encoding (ISO 11785 tolerance) 3/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es f1 represents the frequency for data bit ‘1’ (Td1 = 16/f1) and f0 for the data bit ‘0’ (Td0 = 16/fc). The low and high bits have different duration, because each bit takes 16 RF cycles to transmit. The high bit has a typical duration of ~130 µs, the low bit of ~120 µs. Figure 2 shows the FSK encoding principle used. Figure 2: FSK transmission used during the read phase 2.2.2 TRANSPONDER DATA RATE AND DATA CODING The data coding is based on the NRZ method thus achieving an average data rate of ~ 8 kbit/s based on an equal distribution of ‘0’ and ‘1’ data bits. 3 TRANSMISSION PROTOCOL 3.1 TRANSPONDER – RESPONSE DATA FORMAT Any RFID answer is framed as shown in Figure 3 and it has a fixed length of 128 bits. Depending on the type of answer the STOP and POST bits change. START 1 DATA 8 9 – LSB CRC STOP 72 73 - LSB 88 89 Figure 3: Tag Response Frame format POST 96 97 112 All signals are coded [MSB;LSB]. START – Start Byte [7;0] := 7Ehex DATA – Data [63;0] := Data CRC := Data CRC – DCRC [15;0] STOP – Stop Byte [7;0] := 7Ehex – if bit 16 of ISO11785 =’0’ and page 1 locked := 1Ehex – if bit 16 of ISO11785 =’1’ and page 1 locked POST – Post Bits [15;0] := 0000hex 4/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es 3.2 CRC-CCITT ERROR CHECKING The CRC error checking circuitry generates a 16 bits CRC to ensure the integrity of transmitted and received data packets. The reader and transponder use the CRC-CCITT (Consultative Committee for International Telegraph and Telephone) for error detection. The 16 bits Write Frame BCC is generated by the transponder on reception of the complete write data stream to validate the correct data transmission. Data in P (X) = X0 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 X15 LSB MSB Figure 4: Schematic diagram of the 16 bits CRC-CCITT generator The 16 bits cyclic redundancy code is calculated using the following polynomial with an initial value of 0000HEX: P(X) = x 16 +x 12 5 +x +x 0 The implemented version of the CRC check has the following characteristics: Reverse CRC-CCITT 16 as described in ISO/IEC 13239 and used in ISO/IEC 11784/11785 The CRC 16 bit shift register is initialised to all zeros at the beginning of a request The incoming data bits are XOR-ed with the MSB of the CRC register and is shifted into the register’s LSB After all data bits have been processed, the CRC register contains the CRC-16 code. Reversibility - The original data together with associated CRC, when fed back into the same CRC generator will regenerate the initial value (all zero’s). 4 SPECIFICATIONS 4.1 MECHANICAL DATA 4.1.1 DIMENSIONS Parameter Limits NCD1015-50RO Unit min typ max Length 52.47 mm Diameter 11.60 mm Case Material PA66GF & polyurethane Protection Class Hermetically sealed 4.1.2 MECHANICAL SHOCK 1) Drop test (qualified by similarity) 10 times at 150cm (both orientations) 5/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es 4.1.3 THERMAL STRESS Temperature cycling: 200 times 90°C -> -40°C -> 90°C (transition time: few seconds, storage time at 90°C and -40°C: 20 minutes). 4.2 4.2.1 ELECTRICAL DATA OPERATING CONDITIONS Parameter min max Operating Temperature -25 +70 Storage Temperature -40 +100 Parameter min typ Charge duration 15 50 Low bit frequency fl 133.7 134.7 High bit frequency fh 120.1 123.7 FSK modulation index 9 11 Data retention 10 Limits unit °C °C Limits unit ms 135.7 kHz 126.4 kHz 15 kHz years max 5 ORDERING INFORMATION MPN Description Order code Package NCD1015-50RO HDX 50mm robust transponder NCD1015-50RO Standard 6/8 NCD1015-50RO 11 Nov 2013 Data sheet status: Product Data http://www.ixys.es Level Data Sheet Status [1] Product [2] [3] Status Definitions I Objective data Development This data sheet contains data for the objective specification for product development. II Preliminary data Qualification This data sheet contains data from the preliminary specification. Supplementary data will be updated at a later date III Product data Production This data sheet contains data from the product specification [1] Please consult the most recently issued data sheet before initiating of completing a design [2] The product status of the device[s] described in this data sheet may have changed since this datasheet was published. The latest information is available by contacting IXYS San Sebastian. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. Disclaimers LIFE SUPPORT- These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. IXYS San Sebastian customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify IXYS San Sebastian for any damages resulting from such an application. RIGHT TO MAKE CHANGES- IXYS San Sebastian reserves the right to make changes in the products – including circuits, standard cells, and/or software- described or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). IXYS San Sebastian assumes no responsibility or liability for the use of any of these products, conveys no license of title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. 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