MAX66020 Datasheet, PDF (1/25 Pages) Maxim Integrated Products – ISO/IEC 14443 Type B-Compliant 1Kb Memory Fob Read and Write (64-Bit Block)

19-5540; Rev 0; 12/10
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ISO/IEC 14443 Type B-Compliant
1Kb Memory Fob
General Description
The MAX66020 combines 1024 bits of user EEPROM, a
64-bit unique identifier (UID), and a 13.56MHz RF inter-
face (ISO/IEC 14443 Type B, Parts 2-4) in a plastic key
fob. The memory is organized as 16 blocks of 8 bytes
plus two more blocks for data and control registers.
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 individual memory page. Memory
access is accomplished through the block transmission
protocol (ISO/IEC 14443-4), where requests and
responses are exchanged through I-blocks once a
device is in the ACTIVE state. The data rate can be as
high as 847.5kbps. The reader must support a frame
size of 19 bytes. The device supports an application
family identifier (AFI) and a card identifier (CID).
ISO/IEC 14443 functions not supported are chaining,
frame-waiting time extension, and power indication.
Applications
Driver Identification (Fleet Application)
Access Control
Asset Tracking
Key Fob Mechanical Drawing appears at end of data sheet.
Features
♦ Fully Compliant ISO/IEC 14443 (Parts 2-4) Type B
Interface
♦ 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 CID Function
♦ 10ms Maximum Programming Time
♦ To Fob: 10% ASK Modulation at 105.9kbps,
211.9kbps, 423.75kbps, or 847.5kbps
♦ From Fob: Load Modulation Using BPSK
Modulated Subcarrier at 105.9kbps, 211.9kbps,
423.75kbps, or 847.5kbps
♦ 200,000 Write/Erase Cycles (Minimum)
♦ 40-Year Data Retention (Minimum)
♦ Powered Entirely Through the RF Field
♦ Operating Temperature: -25°C to +50°C
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX66020K-000AA+ -25°C to +50°C
Key Fob
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
13.56MHz READER
TRANSMITTER
TX_OUT
RX_IN
MAGNETIC
COUPLING
ANTENNA
MAX66020
IC LOAD
SWITCHED
LOAD
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