Description
The N24RF04E is a RFID/NFC tag with a 4 Kb EEPROM device,
offering both contactless and contact interface. In addition to the
ISO/IEC 15693 radio frequency identification (RFID) interface
protocol, the device features an I2C interface to communicate with
a microcontroller. The I2C contact interface requires an external
power supply.
The 4 Kb EEPROM array is internally organized as 128 x 32 bits in
RF mode and as 512 x 8 bits when accessed from the I2C interface.

Features
• Contactless Transmission of Data
• ISO 15693 / ISO 18000−3 Mode1 Compliant
♦ Vicinity Range Communication (up to 150 cm)
♦ Air Interface Communication at 13.56 MHz (HF)
♦ To Tag: ASK Modulation with 1.65 Kbit/s or 26.48 Kbit/s Data
Rate
♦ From Tag: Load Modulation Using Manchester Coding with
423 kHz and 484 kHz Subcarriers in Low (6.6 Kbit/s) or High
(26 Kbit/s) Data Rate Mode. Supports the 53 Kbit/s Data Rate
with Fast Commands
• Read & Write 32−bit Block Mode
• Anti−collision Support
• Security:
♦ 64−bit Unique Identifier (UID)
♦ Multiple 32−bit Passwords and Lock Feature for Each User
Memory Sector
• Supports Fast (400 kHz) and Fast−Plus (1 MHz) I2C Protocol
• 1.8 V to 5.5 V Supply Voltage Range
• 4−Byte Page Write Buffer
• I2C Timeout
• Schmitt Triggers and Noise Suppression Filters on I2C Bus Inputs
(SCL and SDA)
• 128 Blocks x 32 Bits (4 Sectors of 32 Blocks Each): RF Mode
• 512 x 8 Bits I2C Mode
• 2,000,000 Program/Erase Cycles
• 200 Year Data Retention
• −40C to +105C Temperature Range
• Configurable Output Pin: RF Write in Progress or RF Busy
• Energy Harvesting Analog Output
• SOIC, TSSOP 8−lead Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant*