SRIX4K

SRIX4K 13.56MHz Short Range Contactless Memory Chip With 4096 bit EEPROM, Anti-Collision and Anti-Clone Functions DATA BRIEFING FEATURES SUMMARY s ISO 14443 - 2 Type B Air Interface Compliant s s s s s Figure 1. Delivery Forms ISO 14443 - 3 Type B Frame Format Compliant 13.56MHz Carrier Frequency 847kHz Sub-carrier Frequency 106 Kbit/s Data Transfer France Telecom Proprietary Anti-Clone Function 8 bits Chip_ID based anticollision system 2 Count-Down Binary Counters – 32 bits each – 232 units to be counted-down Antenna (A3) s s s s s s s s s s 64-bit Unique Identifier 4096-bit EEPROM with Write Protect Feature READ BLOCK & WRITE BLOCK (32 Bits) Internal Tuning Capacitor 1million ERASE/WRITE Cycles 10-Year Data Retention Self-Timed Programming Cycle 5ms Typical Programming Time Antenna (A4) Antenna (A5) Wafer July 2003 Complete data available under NDA. 1/5 SRIX4K SUMMARY DESCRIPTION The SRIX4K is a contactless memory, powered by an externally transmitted radio wave. It contains a 4096-bit user EEPROM fabricated with STMicroelectronics CMOS technology. The memory is organised as 128 blocks of 32 bits. The SRIX4K is accessed via the 13.56MHz 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 847kHz sub-carrier. The received ASK wave is 10% modulated. The Data transfer rate between the SRIX4K and the reader i...