DESCRIPTION
The EM4450/4550 is a CMOS integrated circuit intended for use in electronic Read/Write RF Transponders. The difference between EM4450 and The password can be updated, but never read. The fixed code serial number and device identification are laser programmed making every chip unique. The EM4450/4550 will transmit data to the transceiver by modulating the amplitude of the electromagnetic field, and receive data and commands in a similar way. Simple commands will enable to write EEPROM, to update the password, to read a specific memory area, and to reset the logic. The coil of the tuned circuit is the only external component required, all remaining functions are integrated in the chip. FEATURES
1 KBit of EEPROM organized in 32 words of 32 bits 32 bit Device Serial Number (Read Only Laser ROM) 32 bit Device Identification (Read Only Laser ROM) Power-On-Reset sequence Power Check for EEPROM write operation User defined Read Memory Area at Power On User defined Write Inhibited M...
EM Microelectronic
