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HF 13.56 MHzI²C dual interfaceSTMicroelectronics

M24LR64E-R

The STMicroelectronics M24LR64E-R is an HF 13.56 MHz RFID tag IC, with 64 Kbit (8 Kbytes) EEPROM, operating at 13.56 MHz, under ISO/IEC 15693 ISO/IEC 18000-3 mode 1.

Dual-interface 64-Kbit EEPROM with I²C and ISO/IEC 15693 RF, energy harvesting output for sensor wake-up.

Official Datasheet ↗
Frequency
13.56 MHz
Protocol
ISO/IEC 15693, ISO/IEC 18000-3 mode 1
Memory
64 Kbit (8 Kbytes) EEPROM
Interface
RF (contactless ISO/IEC 15693), I²C (400 kHz)
Temp Range
-40°C to +85°C
Form Factor
SO8, TSSOP8, UFDFPN8

Full Specifications

ManufacturerSTMicroelectronics
Frequency CategoryHF 13.56 MHz
Frequency13.56 MHz
ProtocolISO/IEC 15693, ISO/IEC 18000-3 mode 1
Memory64 Kbit (8 Kbytes) EEPROM
InterfaceRF (contactless ISO/IEC 15693), I²C (400 kHz)
Temperature Range-40°C to +85°C
Form FactorSO8, TSSOP8, UFDFPN8
Security32-bit password write protection, lock bits per sector

Engineering Brief

The M24LR64E-R is a dual-interface EEPROM offering both contactless 13.56 MHz RF access via ISO/IEC 15693 and wired I²C communication, enabling flexible data exchange in battery-powered or passive sensing applications. Its key differentiator is the energy harvesting output pin that can extract power from the RF field to wake up external sensors or microcontrollers, making it ideal for ultra-low-power sensor tags. The device provides 64 Kbit of nonvolatile memory organized in 256-byte sectors with individual write protection, supporting read/write operations from either interface independently or simultaneously with arbitration logic.

Typical Applications

Standards & Compliance

Frequently Asked Questions

What interfaces does the M24LR64E-R support?

The M24LR64E-R supports dual interfaces: contactless RF via ISO/IEC 15693 at 13.56 MHz and wired I²C communication at up to 400 kHz. Both interfaces can access the same EEPROM memory independently or simultaneously with built-in arbitration logic.

How much memory does the M24LR64E-R have?

The M24LR64E-R has 64 Kbit (8 Kbytes) of EEPROM memory organized in 256-byte sectors. Each sector can be individually write-protected for flexible data security.

What is the energy harvesting feature on the M24LR64E-R?

The M24LR64E-R includes an energy harvesting output pin that extracts power from the 13.56 MHz RF field. This output can wake up external sensors or microcontrollers without requiring a battery, enabling ultra-low-power sensor tag designs.

Does the M24LR64E-R support password protection?

Yes, the M24LR64E-R features 32-bit password write protection to prevent unauthorized modification of data. Additionally, individual sectors can be locked using lock bits for granular access control.

Is the M24LR64E-R compatible with ISO/IEC 15693 readers?

Yes, the M24LR64E-R is fully compatible with ISO/IEC 15693 and ISO/IEC 18000-3 mode 1 standards, allowing it to work with standard 13.56 MHz HF RFID readers and NFC-V enabled devices.

Can the M24LR64E-R be used in battery-free sensor applications?

Yes, the energy harvesting capability makes the M24LR64E-R ideal for battery-free sensor applications. It can power external sensors or microcontrollers using energy from the RF field during RFID reader interrogation.

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Standards
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