ISO/IEC 15693, is an ISO/IEC standard for Contactless vicinity objects (vicinity cards and security devices ), i.e. objects which can be read from a greater distance as compared with proximity cards. Such cards can normally be read out by a reader without being powered themselves, as the reader will supply the necessary power to the card over the air (wireless).
ISO/IEC 15693 systems operate at the 13.56 MHz frequency, and offer maximum read distance of 1 meter. As the vicinity cards have to operate at a greater distance, the necessary magnetic field is less (0.15 to 5 A/m) than that for a proximity card (1.5 to 7.5 A/m). ISO/IEC 15693 is called contactless long-range standard with a lower RF speed compared to some other RFID standard such as ISO/IEC 14443.
Standard The standard is developed by ISO/IEC JTC 1 (Joint Technical Committee 1) / SC 17 (Subcommittee 17) ..
ISO/IEC 15693-1:2018 Part 1: Physical characteristics ISO/IEC 15693-2:2019 Part 2: Air interface and initialization ISO/IEC 15693-3:2026 Part 3: Anticollision and transmission protocol
Communication to the card Communication from the reader to the card uses an amplitude-shift keying with 10% or 100% modulation index.
The data coding is:
1 out of 4 pulse-position modulation 2 bits are coded as the position of a 9.44 μs pause in a 75.52 μs symbol time, giving a bit rate of 26.48 kilobits per second. The least-significant bits are sent first. 1 out of 256 pulse-position modulation 8 bits are coded as the position of a 9.44 μs pause in a 4.833 ms symbol time, giving a bit rate of 1.65 kbit/s.
Communication to the reader The card has two ways to send its data back to the reader. Both use a subcarrier transmitted back to the reader using load modulation.
Amplitude-shift keying Amplitude-shift keying 100% modulation index on a 423.75 kHz subcarrier. The data rate can be: Low 6.62 kbit/s (fc/2048) High 26.48 kbit/s (fc/512)
A logic 0 starts with eight pulses of 423.75 kHz followed by an unmodulated time of 18.88 μs (256/ fc); a logic 1 is the other way round. The data frame delimiters are code violations, a start of frame is: an unmodulated time of 56.64 μs (768/ fc), 24 pulses of 423.75 kHz a logic 1
and the end of a frame is: a logic 0 24 pulses of 423.75 kHz an unmodulated time of 56.64 μs
The data are sent using a Manchester code.
Frequency-shift keying Frequency-shift keying by switching between a 423.75 kHz sub carrier (operating frequency divided by 32) and a 484.25 kHz sub carrier (operating frequency divided by 28). The data rate can be: Low 6.67 kbit/s (fc/2032) High 26.69 kbit/s (fc/508)
A logic 0 starts with eight pulses of 423.75 kHz followed by nine pulses of 484.28 kHz; a logic 1 is the other way round. The data frame delimiters are code violations, a start of frame is:
27 pulses of 484.28 kHz 24 pulses of 423.75 kHz a logic 1
and the end of a frame is: a logic 0 24 pulses of 423.75 kHz 27 pulses of 484.28 kHz
The data are sent using a Manchester code.
Manufacturer codes see ISO/IEC 7816-6 Code 0x01: Motorola (UK) Code 0x02: STMicroelectronics SA (FR) Code 0x03: Hitachi Ltd (JP) Code 0x04: NXP Semiconductors (DE) Code 0x05: Infineon Technologies AG (DE) Code 0x06: Cylink (US) Code 0x07: Texas Instruments (FR) Code 0x08: Fujitsu Limited (JP) Code 0x09: Matsushita Electronics Corporation, Semiconductor Company (JP) Code 0x0A: NEC (JP) Code 0x0B: Oki Electric Industry Co Ltd (JP) Code 0x0C: Toshiba Corp (JP) Code 0x0D: Mitsubishi Electric Corp (JP) Code 0x0E: Samsung Electronics Co Ltd (KR) Code 0x0F: Hynix (KR) Code 0x10: LG-Semiconductors Co Ltd (KR) Code 0x11: Emosyn-EM Microelectronics (US) Code 0x12: INSIDE Technology (FR) Code 0x13: ORGA Kartensysteme GmbH (DE) Code 0x14: Sharp Corporation (JP) Code 0x15: ATMEL (FR) Code 0x16: EM Microelectronic-Marin (CH) Code 0x17: SMARTRAC TECHNOLOGY GmbH (DE) Code 0x18: ZMD AG (DE) Code 0x19: XICOR Inc (US) Code 0x1A: Sony Corporation (JP) Code 0x1B: Malaysia Microelectronic Solutions Sdn Bhd (MY) Code 0x1C: Emosyn (US) Code 0x1D: Shanghai Fudan Microelectronics Co Ltd (CN) Code 0x1E: Magellan Technology Pty Limited (AU) Code 0x1F: Melexis NV BO (CH) Code 0x20: Renesas Technology Corp (JP) Code 0x21: TAGSYS (FR) Code 0x22: Transcore (US) Code 0x23: Shanghai Belling Corp Ltd (CN) Code 0x24: Masktech Germany GmbH (DE) Code 0x25: Innovision Research and Technology Plc (UK) Code 0x26: Hitachi ULSI Systems Co Ltd (JP) Code 0x27: Yubico AB (SE) Code 0x28: Ricoh (JP) Code 0x29: ASK (FR) Code 0x2A: Unicore Microsystems LLC (RU) Code 0x2B: Dallas semiconductor/Maxim (US) Code 0x2C: Impinj Inc (US) Code 0x2D: RightPlug Alliance (US) Code 0x2E: Broadcom Corporation (US) Code 0x2F: MStar Semiconductor Inc (TW) Code 0x30: BeeDar Technology Inc (US) Code 0x31: RFIDsec (DK) Code 0x32: Schweizer Electronic AG (DE) Code 0x33: AMIC Technology Corp (TW) Code 0x34: Mikron JSC (RU) Code 0x35: Fraunhofer Institute for Photonic Microsystems (DE) Code 0x36: IDS Microship AG (CH) Code 0x37: Kovio (US) Code 0x38: HMT Microelectronic Ltd (CH) Code 0x39: Silicon Craft Technology (TH) Code 0x3A: Advanced Film Device Inc. (JP) Code 0x3B: Nitecrest Ltd (UK) Code 0x3C: Verayo Inc. (US) Code 0x3D: HID Global (US) Code 0x3E: Productivity Engineering Gmbh (DE) Code 0x3F: Austriamicrosystems AG (reserved) (AT) Code 0x40: Gemalto SA (FR) Code 0x41: Renesas Electronics Corporation (JP) Code 0x42: 3Alogics Inc (KR) Code 0x43: Top TroniQ Asia Limited (Hong Kong) Code 0x44: Gentag Inc (USA) Code 0x45: Invengo Information Technology Co.Ltd (CN) Code 0x46: Guangzhou Sysur Microelectronics, Inc (CN) Code 0x47: CEITEC S.A. (BR) Code 0x48: Shanghai Quanray Electronics Co. Ltd. (CN) Code 0x49: MediaTek Inc (TW) Code 0x4A: Angstrem PJSC (RU) Code 0x4B: Celisic Semiconductor (Hong Kong) Limited (CN) Code 0x4C: LEGIC Identsystems AG (CH) Code 0x4D: Balluff GmbH (DE) Code 0x4E: Oberthur Technologies (FR) Code 0x4F: Silterra Malaysia Sdn. Bhd. (MY) Code 0x50: DELTA Danish Electronics, Light & Acoustics (DK) Code 0x51: Giesecke & Devrient GmbH (DE) Code 0x52: Shenzhen China Vision Microelectronics Co., Ltd. (CN) Code 0x53: Shanghai Feiju Microelectronics Co. Ltd. (CN) Code 0x54: Intel Corporation (US) Code 0x55: Microsensys GmbH (DE) Code 0x56: Sonix Technology Co., Ltd. (TW) Code 0x57: Qualcomm Technologies Inc (US) Code 0x58: Realtek Semiconductor Corp (TW) Code 0x59: Freevision Technologies Co. Ltd (CN) Code 0x5A: Giantec Semiconductor Inc. (CN) Code 0x5B: JSC Angstrem-T (RU) Code 0x5C: STARCHIP France Code 0x5D: SPIRTECH (FR) Code 0x5E: GANTNER Electronic GmbH (AT) Code 0x5F: Nordic Semiconductor (NO) Code 0x60: Verisiti Inc (US) Code 0x61: Wearlinks Technology Inc. (CN) Code 0x62: Userstar Information Systems Co., Ltd (TW) Code 0x63: Pragmatic Semiconductor Ltd. (UK) Code 0x64: Associação do Laboratório de Sistemas Integráveis Tecnológico – LSI-TEC (BR) Code 0x65: Tendyron Corporation (CN) Code 0x66: MUTO Smart Co., Ltd.(KR) Code 0x67: ON Semiconductor (US) Code 0x68: TÜBİTAK BİLGEM (TR) Code 0x69: Huada Semiconductor Co., Ltd (CN) Code 0x6A: SEVENEY (FR) Code 0x6B: ISSM (FR) Code 0x6C: Wisesec Ltd (IL) Code 0x7E: Holtek (TW)
Products with ISO/IEC 15693 interface EEPROM: various manufacturers like ST Microelectronics or NXP offer EEPROMs readable via ISO/IEC 15693. μController: Texas Instruments offers a small μController entirely powered by the ISO/IEC 15693 reading field and capable of reading a simple temperature sensor, wirelessly providing the value of that to the reader.
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