E5551 Просмотр технического описания (PDF) - Temic Semiconductors
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E5551 Datasheet PDF : 21 Pages
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e5551
Standard R/W Identification IC with Anticollision
Description
The e5551 is a contactless R/W-IDentification IC
(IDIC)* for general-purpose applications in the 125 kHz
range. A single coil, connected to the chip, serves as the
IC’s power supply and bidirectional communication
interface. Coil and chip together form a transponder.
The on-chip 264-bit EEPROM (8 blocks 33 bits each) can
be read and written blockwise from a base station. The
blocks can be protected against overwriting. One block is
reserved for setting the operation modes of the IC.
Another block can contain a password to prevent
unauthorized writing.
Reading occurs by damping the coil by an internal load.
There are different bitrates and encoding schemes
possible. Writing occurs by interrupting the RF field in a
special way.
Features
D Low-power, low-voltage operation
D Contactless power supply
D Contactless read/write data transmission
D Radio Frequency (RF): 100 kHz to 150 kHz
D 264 bit EEPROM memory in 8 blocks of 33 bits
D 224 bits in 7 blocks of 32 bits are free for user data
D Block write protection
D Extensive protection against contactless malpro-
gramming of the EEPROM
D Anticollision using Answer-On-Request (AOR)
D Typical < 50 ms to write and verify a block
D Other options set by EEPROM:
Bitrate [bit/s]: RF/8, RF/16, RF/32, RF/40
RF/50, RF/64, RF/100, RF/128
Modulation: BIN, FSK, PSK, Manchester,
Biphase
Other:
Terminator mode,
Password mode
Base station
Power
Data
Transponder
Memory
e5551
Figure 1. RFID system using e5551 tag
Ordering Information
Extended Type Number
e5551A-DOW
e5551A-DIT
e5551A-FP008
Package
DOW
Dice in tray
SO8
Remarks
Configuration after production test is an erased memory (’0’)
* IDIC stands for IDentification Integrated Circuit and is a trademark of TEMIC Semiconductors
Rev. A2, 19-Apr-00
1 (21)
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