125khz rewritable rfid key fob EM4305

EM4305 KEYFOB sets are computer-controlled cards situated at the entrances of buildings to ensure security. em4305 keyfob devices enable only authorized person to enter into the safeguarded area. The rfid key fob EM4305can be swiped or waved in front of a reader, which then verifies the information before allowing access. They have a particular chip installed in them that stores information unique to an individual which makes them extremely reliable.

• 512 bit EEPROM organized in 16 words of 32 bit
• 32 bit unique identifier (UID)
• 32 bit Password read and write protection
• ISO 11784 / 11785 Standard Compliant
• Lock feature converts EEPROM words into Read Only
• Two data encodings: Manchester and Bi-phase
• Multi-purpose data rate: 8, 16, 32, 40 and 64 RF clocks
• Reader Talk First feature
• Very low power consumption and High performances
• Compatible with EM4469/EM4569 communication protocol
• 100 to 150 kHz frequency range
• On-chip rectifier and voltage limiter
• No external supply buffer capacitor needed
• -40°C to +85°C temperature range
• Very low power consumption
• Enlarged bumped pads (200m x 400m) for direct connection of coil (EM4305)
• EM4205: 2 resonant capacitor versions 210pF or 250pF selectable by mask option. The resonant capacitor can be trimmed, at factory level, to offer accuracy on the tolerance of 3%.
• EM4305: 3 resonant capacitor versions 210pF, 250pF or 330pF selectable by mask option
• Available in plastic extremely thin small outline package; 2 terminals; body 1.1 * 1.4 * 0.46 mm