SRT512:ISO14443-B Tag IC with 2 binary counters, full EEPROM user memory and anti-collision with 512-bit

The SRT512 is a contactless memory, powered by an externally transmitted radio wave. It contains a 512-bit user EEPROM. The memory is organized as 16 blocks of 32 bits. The SRT512 is accessed via the 13.56 MHz carrier. Incoming data are demodulated and decoded from the received amplitude shift keying (ASK) modulation signal and outgoing data are generated by load variation using bit phase shift keying (BPSK) coding of a 847 kHz subcarrier. The received ASK wave is 10% modulated. The data transfer rate between the SRT512 and the reader is 106 Kbit/s in both reception and emission modes.

The SRT512 follows the ISO 14443-2 Type B recommendation for the radio-frequency power and signal interface.

Key Features

  • ISO 14443-2 Type B air interface compliant
  • ISO 14443-3 Type B frame format compliant
  • 13.56 MHz carrier frequency
  • 847 kHz subcarrier frequency
  • 106 Kbit/second data transfer
  • 8 bit Chip_ID based anticollision system
  • 2 count-down binary counters with automated anti-tearing protection
  • 64-bit unique identifier
  • 512-bit EEPROM with write protect feature
  • Read_block and Write_block (32 bits)
  • Internal tuning capacitor
  • 1 million erase/write cycles
  • 40-year data retention
  • Self-timed programming cycle
  • 5 ms typical programming time
Product Specifications
DescriptionVersionSize
DS5143: 13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions8.0724 KB
Application Notes
DescriptionVersionSize
AN2319: Using the 64-bit UID in contactless RFID applications2.264 KB
Technical Notes & Articles
DescriptionVersionSize
TA259: Designing low-cost large-volume close-coupling contactless systems with ST contactless memories and coupler2.160 KB
TA0347: Key features and benefits of STMicroelectronics short-range contactless memory ICs2.1100 KB
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
SRT512-SB12I/1GENi/Au WaferNot Applicable--0.08210000NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
SRT512-SB12I/1GENi/Au WaferIndustrialN/Apmqm_s197imt_signed.pdf
pmqm_s197imt.xml
13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions SRT512
Using the 64-bit UID in contactless RFID applications SRI512
Designing low-cost large-volume close-coupling contactless systems with ST contactless memories and coupler SRI512
Key features and benefits of STMicroelectronics short-range contactless memory ICs SRI512
pmqm_s197imt_signed.pdf SRT512
pmqm_s197imt.xml SRT512