AT88RF256-12 Datasheet, PDF (1/12 Pages) ATMEL Corporation – 125 kHz RFID Chip for Cards and Tags

Features
• 125 kHz RFID Chip for Cards and Tags
• 256 Read/Write EEPROM Bits, Divided into Eight Pages of 32 Bits
• Password and Write Lock Protection
• Programmable Send and Receive Protocols
• Support for Multiple Tags (Anti-collision)
• Integrated 150 pF Tuning Capacitor
• ID Length Programmable from 4 - 19 Bytes
• Optional Start and Stop Bits
• Bit Reception Rate of 32 to 4096 Clocks/Bit
• Bit Transmission Rate of 16 to 1024 Clocks/Bit
• Unique Serial Number
• -40° to +85°C Temperature Range
Description
The AT88RF256 is an RFID (radio frequency identification) chip designed to work on
the industry-standard carrier frequency of 125 kHz. Applications include access
control, asset identification, industrial tagging, animal identification and other
applications where modest security capabilities are necessary. Security features
include locking of sensitive information to prevent tampering, optional passwords to
prevent unauthorized access and unique serial numbers locked into the chip by Atmel.
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Block Diagram
125 kHz RFID
Transponder
Chip
AT88RF256-12
Preliminary
V_SS
V_DD
EEPROM
Typical Operating Configuration
External Coil
RF Power
Data
L2
AT88RF256-12
L1
Typical Coil Inductance @125 kHz is ~10.1 mH
Rev. 1684A–07/00
1