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Home » Product Knowledge Center » STMicroelectronics M24LRx Dual Access Protocol RF EEPROMs

STMicroelectronics M24LRx

Dual Access Protocol RF EEPROMs

STMicroelectronics' innovative M24LRx family of Dual Access Protocol RF EEPROMs provide new features and capabilities. The M24LRx Dual Access Protocol RF EEPROM memory bank can be accessed either by a lowpower I²C interface or by an ISO 15693 RF interface operating at 13.56 MHz. STMicroelectronic's M24LRx Dual Access Protocol RF EEPROMs feature an energy harvesting and RF status function. In addition, the M24LRx Dual Access Protocol RF EEPROM family features a 32-bit password protection mechanism. These M24LRx Dual Access Protocol RF EEPROMs are able to transmit information from the heart of the application either to an ISO 15693-capable NFC smartphone or to an industrial RFID reader. The energy harvesting function of these STMicroelectronic's M24LRx Dual Access Protocol RF EEPROMs allows surplus energy from an RF signal to be used by the application, so further reducing power requirements.

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M24LR16E

NEW! STMicroelectronics has expanded their offering of the M24LR16E Dual Access Protocol RF EEPROM family of memories which provides the flexibility to remotely program or update electronic products anytime during their lifetime and anywhere in the supply chain. These new M24LR16E Dual Access Protocol RF EEPROM s now offer a 16Kbit memory size that was not available in the M24LR64-R series. The STMicroelectronics M24LR16E Dual Access Protocol RF EEPROM can be accessed either by a standard I²C interface or by an ISO 15693 RF interface. This M24LR16E family is optimized for use in a variety of applications, including medical equipment, industrial equipment, factory and building automation, computers/peripherals, and consumer electronics.

Features :
Applications:
I2C Interface
  • Two-wire I 2 C serial interface supports 400 kHz protocol
  • 1.8 V to 5.5 V: wide operating voltage range enabling large spectrum of applications
ISO 15693 and ISO 18000-3 mode 1 RF Interface
  • Industry standard compatible with ISO 15693 and ISO 1800-3 mode 1 readers
  • Passive RFID technology: no energy needed to operate in RF mode
Memory
  • User memory: 16 Kbit EEPROM
  • Reliability: 40 years of data retention, 1 million erase/write cycles
  • Data protection: Multiple password protection in RF mode and single password protection in I 2 C mode
Dual Access Protocol EEPROMs allow you to remotely change the application parameters, change calibration data, store traceability information, update the application code or even remotely activate electronic devices or equipment. They are thus a good fit for a wide range of applications, including:
    • Medical equipment
    • Industrial equipment
    • Factory and building automation
    • Computers and peripheral
    • Consumer electronics

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Logic Diagram
Signal Names
Signal Name
Function
Direction
V out
Energy Harvesting Output
Analog Output
SDA
Serial Data
I/O
SCL
Serial Clock
Input
AC0, AC1
Antenna
I/O
V CC
Supply Voltage

RF WIP/BUSY
Digital Signal Digital Output
V SS
Ground
SOIC-8 Connections
Block Diagram
M24LR16E-R Tools
Reference Design Board
Contains:
  • 13.56 MHz inductive antenna etched on the PCB
  • M24LR16E-R Dual Interface EEPROM
  • I2C connector
  • Energy harvesting output (V out ) with a 10nF
    capacitance filtering circuit
  • RF WIP/BUSY output with 20 kΩ pull-up resistor,
    to indicate that an RF operation is ongoing


45 mm x 75 mm
Reference Design Board
Contains:
  • 13.56 MHz inductive antenna etched on the PCB
  • M24LR16E-R Dual Interface EEPROM
  • I2C connector
  • Energy harvesting output (V out ) with a 10nF
    capacitance filtering circuit
  • RF WIP/BUSY output with 20 kΩ pull-up resistor,
    to indicate that an RF operation is ongoing



ANT2-M24LR16E
20 mm x 40 mm
Antenna Evaluation Board
  • 13.56 MHz inductive antenna etched on PCB
  • M24LR16E-R dual interface EEPROM
  • I 2 C connector
  • Energy harvesting output (V out ) with a
    capacitance filtering circuit
  • RF WIP/BUSY output with 20 kΩ pull-up resistor,
    to indicate that an RF operation is ongoing





ROBOT-M24LR16E
20mm x 40mm

M24LR64R

The STMicroelectronics M24LR64-R Dual Access Protocol RF EEPROM family of memories provides the flexibility to remotely program or update electronic products anytime during their lifetime and anywhere in the supply chain. The EEPROM memory bank of the STMicroelectronics M24LR64-R can be accessed either by a standard I²C interface or by an ISO 15693 RF interface. The ISO 15693 RF interface is based on a passive RFID technology that does not require a battery or power to operate but instead gets the energy and data stream from the RF reader. This STMicroelectronics Dual Access Protocol EEPROM family is based on two industry-standard interfaces and features a unique and flexible data protection scheme that protects some or all of the information contained in the memory. The M24LR64-R family is optimized for use in a variety of applications, including medical equipment, industrial equipment, factory and building automation, computers / peripherals, and consumer electronics.

Features
Applications
I2C interface
  • Industry standard: compatible with most microcontrollers and ASICs
  • 1.8 V to 5.5 V: wide operating voltage range enabling large spectrum of applications
ISO 15963 RF Interface
  • Industry standard: compatible with ISO 15693 readers
  • Passive RFID technology: no energy needed to operate in RF mode
Memory
  • User memory: 64 Kbits EEPROM
  • Reliability: 40 years of data retention, 1 million erase-write cycles
  • Data protection: unique and flexible 32-bit password protection scheme
Dual Access Protocol EEPROMs allow you to remotely change the application parameters, change calibration data, store traceability information, update the application code or even remotely activate electronic devices or equipment. They are thus a good fit for a wide range of applications, including:
    • Medical equipment
    • Industrial equipment
    • Factory and building automation
    • Computers and peripheral
    • Consumer electronics

View Products List



Logic Diagram
Signal Names
S ignal Name
Function
Direction
E0, E1
Chip Enable
Input
SDA
Serial Data
I/O
SCL
Serial Clock
Input
AC0, AC1
Antenna Coils
I/O
VCC
Supply Voltage
-
VSS
Ground
-
SOIC-8 Connections
Block Diagram



M24LR64-R Tools
Demonstration Kit
Contains:
  • A middle-range RF reader (ISO 15693,
    RF 13.56 MHz) interfaced via the USB bus
  • An M24LR64-R's reference antenna: PRIM2-M24LR-A.
  • Optional: STM32-PRIMER2 (to be ordered separately)




DEMOKIT-M24LR-A
20mm x 40mm

Data Logger Evaluation Board
Ready to use PCB with:
  • 13.56 MHz inductive antenna etched on PCB
  • STM8L101K3 8-bit microcontroller
  • STTS75 temperature sensor
  • CR2330 battery
  • ON/OFF switch
  • SWIM connector for MCU firmware upgrade
  • Dual interface EEPROM NFC Android App ID

Antenna Reference Boards
Ready to use printed circuit board (PCB) with:
  • The ANT1-M24LR-A, ANT2-M24LR-A, ANT4-M24LR-A and ANT5-M24LR-A have a 13.56 MHz inductive antenna etched on the PCB
  • The ANT3-M24LR-A has a 4.7µH SMD inductor acting as an RF antenna
  • The ANT1-M24LR-A, ANT2-M24LR-A and ANT3-M24LR-A each have a single Dual Interface 64Kbit EEPROM (M24LR64-R) connected in parallel to antenna and connector
  • The ANT4-M24LR-A has two Dual Interface 64Kbit EEPROMs (M24LR64-R) connected in parallel to antenna and connector
  • ANT5-M24LR-A has four Dual Interface 64Kbit EEPROMs (M24LR64-R) connected in parallel to antenna and connector
  • I2C connector
ANT1-M24LR-A
45 mm x 75 mm

ANT2-M24LR-A
43 mm x 53 mm

ANT3-M24LR-A
43 mm x 53 mm


ANT4-M24LR-A
45 mm x 75 mm

ANT5-M24LR-A
45 mm x 75 mm

Development Kit
Contains:
  • A middle-range RF reader (ISO 15693, RF 13.56 MHz) interfaced via the USB bus
  • An external power supply to have a greater read range
  • An external antenna
  • A serial EEPROM USB reader
  • An I²C bus cable to connect the serial EEPROM USB reader to the I²C bus of the reference antenna
  • M24LR64-R reference antennas:
    - ANT1-M24LR-A, RF antenna size: 75 mm × 45 mm (2.9 in × 1.77 in)
    - ANT2-M24LR-A, RF antenna size: 20 mm × 40 mm (0.79 in × 1.57 in)
  • M24LR64-R samples in SO8 package




  • STMicroelectronics
  • Industrial|Wireless
  • Semiconductors|Embedded Processors|IC-Memory