KSEC Tagbase

Our RFID & NFC Knowledge Base

Version 1.3.1


STMicroelectronics RFID products 

CR14 and CRX14 is reader chip.

CRX14 has anti clone algorithm, it can be masked customized key as well as SRIX4k for anti-clone application.

SRT512 is for mass transportation application like NXP Ultralight,  SRT512 total memory size is 512bit  and  has  2 count-down binary counter,.

SRI512 is similar with SRT512 , only one different point , SRI512    0-4 block are OTP and 7-15 block are EEPROM, SRT512  all block are EEPROM.

SRI2k is similar with SRI512 , but its memory is 2kbit, also  0-4 block is OTP and 7-63 block are EEPROM.

SRI4k is similar with SRI512, but its memory size is 4k bit, also 0-4 block is OTP and 7-127 block are EEPROM.

LRI2k is compatible with NXP ICODE 2, but LRI2k memory is 2k bit.

LRIS2k is 2kbit memory size, but each block can use 1 of 3 passwords to control read and write.

LRI64 is low end ISO15693 product, only 64bit memory size.

SRI2K, 13.56 MHz short-range contactless memory chip with 2048-bit EEPROM and anticollision functions

■ 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 antitearing protection
■ 64-bit Unique Identifier
■ 2048-bit EEPROM with Write Protect feature
■ Read_block and Write_block (32 bits)
■ Internal tuning capacitor
■ 1million erase/write cycles
■ 40-year data retention
■ Self-timed programming cycle
■ 5 ms typical programming time