AT24RF08C Datasheet, PDF (1/21 Pages) ATMEL Corporation – Asset Identification EEPROM

Features
• Dual-port Nonvolatile Memory - RFID and Serial Interfaces
• Two-wire Serial Interface:
– Compatible with a Standard AT24C08 Serial EEPROM
– Programmable Access Protection to Limit Reads or Writes from Either Port
– Lock/Unlock Function, Coil Connection Detection
• RFID Interface:
– 125 kHz Carrier Frequency for Long Range Access
– 2-Wire Connection to External Coil Antenna and Tuning Capacitor
– Multi-tag Management to Handle Several Tags in the Field at Once
– 12 RFID Commands for Tag Control and Memory Read/Write
– ID Write and Lock from RFID Port
– Ultra Low Power Single Bit Write - 25 µA
• Highly-reliable EEPROM Memory
– 8K bits (1K bytes), Organized as 8 Blocks of 128 Bytes Each
– 16-byte Page Write, 10 ms Write Time
– 10 Years Retention, 100K Write Cycle Endurance
• -40°C to +85°C Operation, 2.4V to 5.5V Supply, 8-Lead JEDEC SOIC Package
Description
The AT24RF08C functions as a dual access EEPROM, with both a wired serial port
and a wireless RFID port used to access the memory. Access permissions are set
from the serial interface side to isolate blocks of memory from improper access. The
RFID interface can be powered solely from the attached coil permitting remote reads
and writes of the device when VCC is not applied.
Block Diagram
Asset
Identification
EEPROM
AT24RF08C
Pin Configurations
Pin Name
Function
L1
Coil Connection
L2
Coil Connection
PROT
Protection Input
GND
Ground
SDA
Serial Data,Open Drain I/O
SCL
Serial Clock Input
WP
Write Protect Input
VCC
Supply: 2.4V - 5.5V
8-Pin SOIC
L1 1
L2 2
PROT 3
GND 4
8 VCC
7 WP
6 SCL
5 SDA
Rev. 1072E–09/99
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