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参数资料
| 型号： | EM4550A5WT7 |
| 厂商： | EM Microelectronic |
| 英文描述： | 1 KBit Read/Write Contactless Identification Device |
| 中文描述： | 1千位读/写非接触式识别装置 |
| 文件页数： | 1/16页 |
| 文件大小： | 230K |
| 代理商： | EM4550A5WT7 |
EM4450
EM4550
Copyright
2003, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
1 KBit Read/Write Contactless Identification Device
Description
The EM4450/4550 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 EM4450/4550 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 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
Typical Operating Configuration
Coil2
Coil1
EM4450
Typical value of inductance at 125 kHz is 9.6 mH
L
Fig.1
EM MICROELECTRONIC
- MARIN SA
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| EM4550A5WT7E | 1 KBit Read/Write Contactless Identification Device |
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| EM4550A5WW11E | 1 KBit Read/Write Contactless Identification Device |
| EM4550A5WW27 | 1 KBit Read/Write Contactless Identification Device |
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相关代理商/技术参数 |
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| EM4550A5WT7E | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:1 KBit Read/Write Contactless Identification Device |
| EM4550A5WW11 | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:1 KBit Read/Write Contactless Identification Device |
| EM4550A5WW11E | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:1 KBit Read/Write Contactless Identification Device |
| EM4550A5WW27 | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:1 KBit Read/Write Contactless Identification Device |
| EM4550A5WW27E | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:1 KBit Read/Write Contactless Identification Device |
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