EM4450,EM4550

EM4450/EM4550 is a CMOS integrated circuit intended for use in electronic Read/Write RF Transponders. The difference between EM4450 and EM4550 is that EM4550 is bumped and has mega pads for the two coils. The chip contains 1K Bit of EEPROM which can be configured by the user, allowing a write inhibited area, a read protected area, and a read area output continuously at power on. The memory can be secured by using the 32 bit password for all write and read protected operations. The password can be updated, but never read. The fixed code serial number and device identification are laser programmed making every chip unique.

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Chip Parameters

IC Type	EM4450/4550
Frequency	125KHz
Mode	R/W
Protocol	/
Memory	1K bit
Operating Distance	Up to 50mm (depending on antenna geometry)
Anticollision	no
Applications	Ticketing; Automotive Immobilizer with rolling code, High Security Hands Free Access Control, Industrial automation with portable database, Manufacturing automation; Prepayment Devices

Card Parameters

Dimention	85.6×54×0.8 mm
Material	PVC, PET, PC, PETG
Surface	Matt / Glossy
Temperature	-25~50 ‘C
Weight Per Card	6 grams
Package	200 or 250 pcs/box, or on request