mlx90121 Melexis Company, mlx90121 Datasheet
mlx90121
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mlx90121 Summary of contents
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... Programmable encoder and decoder Low external component count (1).Purchase of MLX90121s doesn’t imply any grant of any ISO14443A license. Customers are advised to sign patent licensing agreements with all third parties, especially those companies listed in the introduction of the corresponding standard. (2) RATP / Innovatron Technology (3) Conformance with ISO/IEC15693 “ ...
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... FEATURES AND BENEFITS ....................................................................................................................... 1 APPLICATIONS............................................................................................................................................ 1 ORDERING INFORMATION......................................................................................................................... 1 1. FUNCTIONAL DIAGRAM................................................................................................................... 1-1 2. DESCRIPTION.................................................................................................................................... 2-1 3. GLOSSARY OF TERMS ....................................................................................................................... 3 4. ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 3 5. MLX90121 ELECTRICAL SPECIFICATIONS ...................................................................................... 3 6. MLX90121 SPECIFIC SPECIFICATIONS............................................................................................. 4 7. GENERAL DESCRIPTION .................................................................................................................... 6 8. APPLICATIONS INFORMATION .......................................................................................................... 7 9. BLOCK DIAGRAM ................................................................................................................................ 8 10. DIGITAL INTERFACE ........................................................................................................................... 8 11. OPERATING MODES............................................................................................................................ 9 11.1. D ...............................................................................................................................................9 EFINITIONS 11 ...
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... Glossary of Terms 4. Absolute Maximum Ratings Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-maximum- rated conditions for extended periods may affect device reliability. 5. MLX90121 Electrical Specifications T = -40 ºC to +85 ºC, or 0ºC to +70 ºC according to the version board resonator is used. ...
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... MLX90121 Specific Specifications DC Operating Parameters T = -40 A otherwise specified) 3901090121 Rev. 007 13.56MHz RFID Transceiver +70 C according to the version, V Page MLX90121 = 5V (unless DD Data Sheet Jan-2008 ...
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... The external clock symmetry is of paramount importance. It has a direct influence on the transmitter output power. When using a sine wave as external clock input, it must not show visible distortion. In case a square wave is used, its duty cycle has to be equal to 50%. 3901090121 Rev. 007 13.56MHz RFID Transceiver Page MLX90121 Data Sheet Jan-2008 ...
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... The communication interface normally uses 6 wires: - CK: serial clock input - DIN: data input - DOUT: data output - DSYNC: synchronization output for DOUT - MODE: selection input - RTB: input. Page MLX90121 In the idle internal bias system is configuration or communication reception or transmission selection Data Sheet Jan-2008 ...
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... first evaluation highly recommended to use the MLX90121 evaluation board that can be ordered from Melexis. The clock for the microcontroller can also be derived from the XBUF pin. This pin provides a 13.56MHz buffered clock or 13.56MHz divided by 2 ...
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... Digital Interface The MLX90121 is driven by four signals: MODE and RTB pins are used to select the operating mode and DIN and CK pins are used to configure the chip and to transmit data. The MLX90121 has two signal outputs. DOUT contains the decoded response of the transponder and DSYNC is used as a synchronization output by the microcontroller ...
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... CK and DIN lines. Data on the DIN line is read on the rising edge of CK. The first four bits on DIN are the register address and the eight following bits are the data. Address and data fields are written MSB (Most Significant Bit) first. 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... For the transmission, the modulation depth has to be chosen. This is done by the TModIndex bit of the AnalogConfig register, which selects the modulation index: 10% or 100%. The modulation index can be further tuned by means of the external RMOD resistor. 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Address Data MSB ...
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... The ISO15693 protocol, mode 1 out implemented using six symbols as shown in the following table. Start of frame (SOF), end of frame (EOF) and pulses are all encoded using one symbol. 3901090121 Rev. 007 13.56MHz RFID Transceiver Symbol Code Page MLX90121 1 Data Sheet Jan-2008 ...
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... EncTimeRef is coded on 5 bits. This means that Bit_Time_max = 9.44 s and Symbol_Time_max = 75.52 s. 3901090121 Rev. 007 13.56MHz RFID Transceiver 8 * Bit _ Time Bit _ Time EncTime 1 Mhz Page MLX90121 Data Sheet Jan-2008 ...
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... DSYNC Modulation 3901090121 Rev. 007 13.56MHz RFID Transceiver available after the rising edge of DSYNC Sym0 Sym3 Sym5 Sym2 Sym0 Sym3 Page MLX90121 No CK pulse to complete the transmission Sym5 Data Sheet Jan-2008 ...
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... For a proper reception, the analog chain has to be configured according to the following parameters in the AnalogConfig register: ByPassAll: It bypasses the analog filters in the analog chain. Must be enabled for AM reception. RSub-carrier: It selects the reception sub-carrier frequency – See table. ISO Examples 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... The following parameters in the DigitalConfig register have to be set when using majority voting. MVEn: it enables the majority voting function. DecTimeRef: it defines the duration of the time slot (MVTime) 3901090121 Rev. 007 13.56MHz RFID Transceiver MVTime Page MLX90121 D2 Data Sheet Jan-2008 ...
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... DSYNC. Data output are delayed by DecTimeRef (see next figure). CK DSYNC Input Signal DOUT Input Signal 3901090121 Rev. 007 13.56MHz RFID Transceiver 1 Mhz Majority Voting DOUT Page MLX90121 D3 Data Sheet Jan-2008 ...
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... LTC is controlled according to the following parameters in the LTC register: LTCEn: it enables the LTC circuit. LTCDelay: delay to switch the time constant (see next table). RSSI Delay LTC LTCDelay Recommended delay for ISO standard 3901090121 Rev. 007 13.56MHz RFID Transceiver Input Signal DOUT CK MV start Page MLX90121 - + Data Sheet Jan-2008 ...
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... After a wake-up, the chip has to be set in Transmitter On or Low Power mode by updating the PowerState register, after T Low Power The oscillator is still on but all analog circuitry is off. 3901090121 Rev. 007 13.56MHz RFID Transceiver Wake-up . start Page MLX90121 PowerOn Data Sheet Jan-2008 ...
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... The XBUF pin can be used to clock a device or a microcontroller. By default the output is enabled with a frequency of 6.78MHz. The frequency can be doubled to 13.56MHz by setting the bit XBUFSel. When the output is not used recommended to disable the clock by setting the bit XBUFEnB. 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... Configuration Registers The following tables explain the meaning of the bit configurations in the 13 registers. Notes Notes 1 3901090121 Rev. 007 13.56MHz RFID Transceiver 0 Unused Page MLX90121 Data Sheet Jan-2008 ...
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... Notes Notes Symbol 6 is hard-coded to 0xFF (11111111). 3901090121 Rev. 007 13.56MHz RFID Transceiver Unused Page MLX90121 Data Sheet Jan-2008 ...
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... Configuration Registers: ISO Configuration Examples Notes All values are in hexadecimal notation. Transmitter is switched on. 3901090121 Rev. 007 13.56MHz RFID Transceiver -- Unused Unused Page MLX90121 Data Sheet Jan-2008 ...
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... Of the use of certain Hazardous Substances) please visit the quality page on our website: http://www.melexis.com/quality.asp. 15. ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... VSS2 MODE 14 8 XBUF DIN 13 9 RES1 VDD2 12 10 RTB DOUT 11 Moisture Sensitivity Level is MSL3, according as per IPC/JEDEC J-STD-20. The mechanical dimensions of this package are depicted on the following page. 3901090121 Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... Rev. 007 MLX90121 13.56MHz RFID Transceiver Page Data Sheet Jan-2008 ...
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... Or for additional information contact Melexis Direct: Europe and Japan: Phone: + E-mail: sales_europe@melexis.com 3901090121 Rev. 007 13.56MHz RFID Transceiver www.melexis.com All other locations: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com ISO/TS 16949 and ISO14001 Certified Page MLX90121 Data Sheet Jan-2008 ...