1

Features

– Compatible with AT24C08, and similar products from others

– Supports standard byte and page read/write commands

– Programmable Access Protection to limit reads or writes from either port

– Coil connection detection

– 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

– 11 RFID commands for tag control and memory read/write

– Ultra low power single bit write - 20

µµµµA

– 8K bits (1K bytes)

– Organized as 8 blocks of 128 bytes each

– 16-byte page write, 10ms write time

– Additional memory for access protection and ID number

– 10 years retention, 100K write cycle endurance

– -40° to +85° operation

Description

The chip functions as 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 inteface side to

isolate blocks of memory from improper access depending on the situation. The RFID interface

is designed to be powered solely from the attached coil, permitting remote reads and writes of

the device.

Block Diagram

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: 2.4 - 5.5V

1K x 8

Dual Access

EEPROM with

RFID and Serial

Interfaces

AT24RF08

8-Pin SOIC

1072AS - 4/98 - 100

Note: This is a summary document. For more information contact:

Kerry Maletsky at kmaletsky@atmel.com