EM MICROELECTRONIC EM4450 EM4550 1 KBit Read/Write Contactless Identification Device
The EM4450/4550 is a 1KBit read/write contactless identification device from EM Microelectronic-Marin SA. The difference between EM4450 and EM4550 is that EM4550 are bumped and has megapads for the two coils.