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T555403-DBN Datasheet(PDF) 1 Page - ATMEL Corporation |
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T555403-DBN Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 27 page Features • Low-power, Low-voltage Operation • Contactless Power Supply • Contactless Read/Write Data Transmission • Radio Frequency (RF): 100 kHz to 150 kHz • 264-bit EEPROM Memory in 8 Blocks of 33 Bits • 224 Bits in Seven Blocks of 32 Bits are Free for User Data • Block Write Protection • Extensive Protection Against Contactless Malprogramming of the EEPROM • On-chip Resonance Capacitor (80 or 210 pF Mask Option) • Anticollision Using Answer-On-Request (AOR) • Typical < 50 ms to Write and Verify a Block • Other Options Set by EEPROM: – Bitrate [bit/s]: RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/100, RF/128 – Modulation: BIN, FSK, PSK, Manchester, Biphase – Other: Terminator Mode, Password Mode, AOR Mode 1. Description The T5554 is a contactless R/W-IDentification IC (IDIC ®) for general-purpose applica- tions in the 125 kHz range. A single coil, connected to the chip, serves as the IC’s power supply and bidirectional communication interface. The coil and chip together form a transponder. The on-chip 264-bit EEPROM (8 blocks 33 bits each) can be read and written block- wise from a base station. The blocks can be protected against overwriting. One block is reserved for setting the operation modes of the IC. Another block can contain a password to prevent unauthorized writing. Reading occurs by damping the coil by an internal load. There are different bitrates and encoding schemes possible. Writing occurs by interrupting the RF field in a spe- cial way. 2. System Block Diagram Figure 2-1. RFID System Using T5554 Tag Memory Transponder Base station Data Power Memory Transponder Base station Data T5554 Power Standard R/W IDIC (264 Bit) with Integrated Capacitance T5554 4576D–RFID–12/06 |
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