Belonging to ST25 family, which includes allNFC/RF ID tag and reader products from ST
I2C interface
Two-wire I2C serial interface supports 400 kHz protocol
Single supply voltage:1.8 V to 5.5 V
Byte and Page Write (up to 4 bytes)
Random and Sequential read modes
Self-timed programming cycle
Automatic address incrementing
Enhanced ESD/latch-up protection
I²C timeout
Contactless interface
13.56 MHz ±7k Hz carrier frequency
To tag: 10% or 100% ASK modulation using 1/4 (26 Kbit/s) or 1/256 (1.6 Kbit/s) pulse position coding
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
Internal tuning capacitance: 27.5pF
64-bit unique identifier (UID)
Read Block & Write (32-bit blocks)
Digital output pin
User configurable pin: RF write in progress or RF busy mode
Energy harvesting
Analog pin for energy harvesting
4 sink current configurable ranges
Temperature range:
from -40°C up to 85°C
Memory
16-Kbit EEPROM organized into:
2048 bytes in I2C mode
512 blocks of 32 bits in RF mode
Write time
I2C: 5 ms (max.)
RF: 5.75 ms including the internal Verify time
Write cycling endurance:
1 million write cycles at 25°C
150k write cycles at 85°C
More than 40-year data retention
Multiple password protection in RF mode
Single password protection in I2C mode
Package:
Halogen-free