DESCRIPTION
The HT2DC20S20 mifare ultralight is a high performance transponder for bi-directional transmission in half duplex mode between read/write device and transponder.
Data are stored in the transponder in a non-volatile memory (EEPROM). The transponder requires no internal power supply; it derives its power from the magnetic component of the RF carrier frequency generated by the reader. Data are transmitted by modulating this carrier.
FEATURES
• Identification transponder for use in contactless applications
• Operating frequency 125 kHz
• Data transmission and energy supply via RF link, no internal battery
• Reading distance same as writing distance
• Non-volatile memory of 256 bits (128 bit user data and 128 bit control data/secret memory) organized in 8 pages, 4 Bytes each
• 10 years non-volatile data retention
• > 100 000 erase/write cycles
• Selective read/write protection of memory content
• Two coding schemes for read operation: Biphase and Manchester coding
• Effective communication protocol with outstanding data integrity check
• Mutual authentication function
• Read/write mode allows:
• plain data transmission (password check)
• encrypted data transmission (crypto mode)
• In read/write mode multi-tag operation possible because of special HALT-function
• Emulation of standard industrial read-only transponders:
• Public Mode A (MIRO and transponders from μEM (H400x))
• Public Mode B (according to ISO 11784 and ISO 11785 for animal identification)
• Public Mode C (PIT compatible mode

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