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ON Semiconductor


ON Semiconductor’s N24RF family of NFC EEPROM products provides a scalable design solution which combines conventional EEPROM functionality with an integrated NFC interface for contactless reading and writing of data.

Like a conventional non-volatile EEPROM device, the N24RF includes a digital I2C interface. The NFC interface provides an additional option for contactless reading and writing via an NFC reader such as a smartphone equipped with an NFC radio. The device can communicate with a reader over a range of up to 1.5m.

Some parts in the N24RF series also include energy-harvesting capability: these devices can power themselves from the energy of the reader’s RF field during communication, which enables the implementation of batteryless designs.

The N24RF series is available in two package options: an SOIC-8 measuring 4mm x 5mm x 1.75mm, and a TSSOP-8, which is 3.1mm x 4.5mm x 1.2mm.

The N24RF’s data encoding function provides the designer with options for selecting the optimal data rate. For data transfer to the tag, ASK modulation is used at 1.65kbits/s or 26.48kbits/s data rates. From the tag, the N24RF implements load modulation using Manchester coding with 423kHz and 484kHz sub-carriers at a low (6.6kbits/s) or high (26kbits/s) data rate.

The N24RF also supports a 53kbits/s data rate with fast commands.

  • ISO 15693/ISO 18000−3 Mode 1 compliant
  • Range up to 150cm
  • Air-interface communication at 13.56MHz
  • Read and Write 32−bit block mode
  • Anti-collision support
  • 64−bit unique identifier
  • Multiple 32-bit passwords and Lock feature for each user memory sector
  • Supports Fast and Fast-Plus I2C protocols
  • 4−byte page write buffer
  • Schmitt triggers and noise suppression filters on I2C bus inputs
  • 2,000,000 Program/Erase Cycles
  • 200 years’ data retention
  • Operating-temperature range: -40°C to 105°C
  • Supply-voltage range: 1.8V-5.5V
  • Predictive maintenance
  • Contactless data monitoring
  • Contactless firmware updating


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