MLX90129 Просмотр технического описания (PDF) - Melexis Microelectronic Systems
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MLX90129 Datasheet PDF : 60 Pages
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MLX90129
13.56MHZ SENSOR TAG / DATALOGGER IC
8. Communication
8.1. RFID communication
8.1.1. RFID analog front-end
The MLX90129 RFID interface complies with the ISO15693 standard. The sensor tag gets accessed through an RFID base-station
(reader) by modulating the 13.56MHz carrier frequency. Data recovery is done from the amplitude modulated reader signal (ASK,
Amplitude Shift Keying 10% or 100%). The data transfer rate is 26 kbps while using a 1-out-of-4 coding scheme. From the
incoming HF field, the RFID interface recovers the clock and generates a power supply for all internal building blocks. The
rectified voltage can be used to supply the whole device in battery-less applications.
The data upload (from the tag to the reader) is generated by antenna load modulation with Manchester coding, and using one or
two sub-carrier frequencies at 423 kHz and 484 kHz. The data transfer rate is 26 kbps.
COIL1
COIL2
Modulator
ESD
Overvoltage
Clamp
Rectifier
VFIELD
Regulator
Clock
recovery
Demodulator
Power-on
reset (Ninie)
8.1.2. ISO-15693 Features and Command set
For complete information about the communication protocol, please refer to the standard document:
ISO/IEC FCD 15693-2 and ISO/IEC FCD 15693-3: Identification cards- contactless integrated circuit(s) cards - Vicinity cards - It is
available on the website: http://www.iso.org
Some of the features of the protocol are not supported. Furthermore, some “custom” commands have been defined (see
Command set). The MLX90129 is provided with a Unique IDentifier compliant with the ISO standard.
Summary of the main, supported features
Features
Reader to Tag Modulation
Index
Reader to Tag Coding
Tag to Reader Modulation
Tag to Reader Sub-Carrier
Tag to Reader Coding
Tag to Reader Data-rate
Supported
10% and 100%
Pulse Position Modulation: 1 out of 4
Single and dual Sub-carrier
423 kHz / 484 kHz
Manchester
High Data-rate 26 kBit
Not supported
PPM: 1 out of 256
Low Data-rate 6 kBit
REVISION 011 - JUNE 13, 2017
3901090129
Page 20 of 60
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