HITAG 1 based transponders are highly integrated and do not need any additional components beside the external coil.
Data between Key (RWD) and transponder is transmitted bidirectionally, in Half Duplex Mode. The HITAG 1 transponder IC offers also an encrypted data transmission.
The AntiCollision (AC) Mode, which is used mainly in long range operation, allows to handle several transponders that are at the same time in the communication field of the antenna, thus achieving highest operating reliability and permitting to handle several transponders quickly and simultaneously.
The HITAG 1 transponder IC provides two protocol modes, Standard and Advanced Mode. The Advanced Protocol Mode operates compared to the Standard Protocol Mode with an increased number of Startbits and a 8-bit Cyclic Redundancy Check (CRC) sent by the transponder IC at read operations.
HITAG 1 transponder IC offer a memory of 2 kbit.
Features and benefits
Identification transponder for use in contactless applications
Operating frequency 125 kHz
Data transmission and energy supply via RF link, no internal battery
Non-volatile memory of 2 kbit
Organized in 64 pages, 4 bytes each
10 years non-volatile data retention
100000 erase/write cycles
Selective read/write protection of memory content
Mutual authentication function
Applications
Logistics
Asset tracking
Gas cylinder ID
Industrial automation

This technology NFC CARD by free contact and in the light of the radio frequency identification (RFID), by philips semiconductor (now en pu semiconductors), nokia and SONY joint research and development, it is based on RFID and interconnection technology. NFC is a short-range hf radio technology, run the 13.56 MHz frequency within 20 cm distance. The transmission speed is 106 Kbit/SEC, 212 Kbit/SEC three or 424 Kbit/SEC. The near field communication has passed into the ISO/IEC IS 18092 international standards, EMCA - 340 standard and ETSI TS standard 102-190. NFC using both active and passive reading mode.