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EM4200 is a CMOS integrated circuit intended for use in electronic Read Only RF transponders. It is designed to replace directly the EM Microelectronic-Marin Read Only ICs EM4100/4102 and EM4005/4105.

Compared to EM4100/4102 and EM4005/4105, the chip provides higher reading range performances and presents on its coil terminals bigger resonant capacitor (210pF and 250pF selectable by mask option).

The 128 bit unique code is stored in laser programmed ROM. Several options are available to use 64, 96 or 128 bits of ROM.

The circuit is powered by an external coil placed in an electromagnetic field and gets its master clock from the same field. By turning on and off the modulation current, the chip will send back the unique code contained in a factory pre-programmed laser ROM.

• Fully compatible with EM4100/4102 and EM4005/4105 communication protocols
• 128 bit laser programmed ROM (64 and 96 bit option available)
• Several options of data rate and data encoding: Manchester, Biphase, PSK and FSK
• Several resonant capacitor integrated on chip (75pF, 210pF or 250pF mask option)
• 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 and High performances
• EM 4200-FACT SHEET
• EM4200 DATASHEET

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EM4205 Card, 4305 card, EM4100 Card, EM4102 Card, Compatible TK4100 Card, Compatible EM4102 Card is a CMOS integrated circuit intended for use in electronic Read/Write RF transponders.

Contactless Identification Card, Access Control Card, 125kmz access card, NFC Acces Control Card, RFID Access Card,

• 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)
• EM4205: 2 resonant capacitor versions 210pF or 250pF selectable by mask option
• EM4305: 3 resonant capacitor versions 210pF, 250pF or 330pF selectable by mask

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M4450 / EM4550

1 KBit Read/Write Contactless Identification Device

The 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 are bumped and has megapads for the two coils. The chip contains 1 KBit 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.

The EM4450/EM4550 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.

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 Memory Area
User defined Read Protected Memory Area
Data Transmission performed by Amplitude Modulation
Two Data Rate Options 2 KBd (Opt64) or 4 KBd (Opt32)
Bit Period = 64 or 32 periods of field frequency
170 pF ± 2% on chip Resonant Capacitor
-40 to +85°C Temperature range
100 to 150 kHz Field Frequency range
On chip Rectifier and Voltage Limiter
No external supply buffer capacitance needed due to low power consumption
Available in chip form for mass production and PCB and CID package for samples.

Applications

-Ticketing
-Automotive Immobilizer with rolling code
-High Security Hands Free Access Control
-Industrial automation with portable database
-Manufacturing automation
-Prepayment Devices

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