MAX66120 Datasheet, PDF (1/24 Pages) Maxim Integrated Products – ISO 15693-Compliant 1Kb Memory Fob Powered Entirely Through the RF Field

19-5623; Rev 0; 11/10
EVAALVUAAILTAIOBNLEKIT
ISO 15693-Compliant 1Kb Memory Fob
General Description
The MAX66120 combines 1024 bits of user EEPROM, a
64-bit unique identifier (UID), and a 13.56MHz ISO
15693 RF interface in a plastic key fob. The memory is
organized as 16 blocks of 8 bytes plus two more blocks
for data and control registers. Each block has a user-
readable write-cycle counter. Four adjacent user
EEPROM blocks form a memory page (pages 0 to 3).
Memory protection features are write protection and
EPROM emulation, which the user can set for each indi-
vidual memory page. The MAX66120 supports all ISO
15693-defined data rates, modulation indices, subcarri-
er modes, the selected state, application family identifier
(AFI), data storage format identifier (DSFID), and the
Option_flag bit for read operations. Memory write
access is accomplished through standard ISO 15693
memory and control function commands.
Applications
Driver Identification (Fleet Application)
Access Control
Asset Tracking
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX66120K-000AA+ -25°C to +50°C
Key Fob
+Denotes a lead(Pb)-free/RoHS-compliant package.
Key Fob Mechanical Drawing appears at end of data sheet.
Features
♦ Fully Compliant with ISO 15693 and ISO 18000-3
Mode 1 Standard
♦ 13.56MHz ±7kHz Carrier Frequency
♦ 1024-Bit User EEPROM with Block Lock Feature,
Write-Cycle Counter, and Optional EPROM-
Emulation Mode
♦ 64-Bit UID
♦ Read and Write (64-Bit Block)
♦ Supports AFI and DSFID Function
♦ 10ms Programming Time
♦ To Fob: 10% or 100% ASK Modulation Using 1/4
(26kbps) or 1/256 (1.6kbps) Pulse-Position Coding
♦ From Fob: Load Modulation Using Manchester
Coding with 423kHz and 484kHz Subcarrier in Low
(6.6kbps) or High (26kbps) Data-Rate Mode
♦ 200,000 Write/Erase Cycles (Minimum)
♦ 40-Year Data Retention (Minimum)
♦ Compatible with Existing 1Kb ISO 15693 Products
on the Market
♦ Supports the Option_Flag for Read Operations
♦ Powered Entirely Through the RF Field
♦ Operating Temperature: -25°C to +50°C
Typical Operating Circuit
13.56MHz READER
TRANSMITTER
TX_OUT
RX_IN
MAGNETIC
COUPLING
ANTENNA
MAX66120
IC LOAD
SWITCHED
LOAD
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.