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512 bit Read/Write Contactless Identification Device-The EM4305 key card is a CMOS integrated circuit intended for use in electronic Read/Write RF transponders.

1.Chips: EM4305

2.Dimension: CR80 or as customer's requirement

3.Frequency: 125KHz

4.Standard ISO11785

5.Material: PVC

6.Data saved time: 10 years

7. Options: Signature panel, LOCO/HICO Magnetic Stripe, embossing letter and number, barcode, sequential numbering, Gold/Silver card, frosted card.

8.Application: EM4305 Proximity Card is widely used in Parking lot system and hotel door locks, for its long inductive distance(70-80cm), ISO Thin EM Card is widely used in Access Control System, Time and attendance, parking lot and consuming system.

-512 bit EEPROM organised 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 in Read Only

- Two data encodings: Manchester and Biphase

-Multi-purpose data rate: 8, 16, 32 and 64 RF clocks

-Reader Talk First feature

-Compatible with EM4469 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 (200 μm x 400 μm) for direct connection of coil (EM4305)

-EM4305: 3 resonant capacitor versions 210pF, 250pF or 330pF selectable by mask