Rainbow-electronics MAX66120 User Manual

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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
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
MAX66120
ISO 15693-Compliant 1Kb Memory Fob
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
IC LOAD
SWITCHED
LOAD
MAGNETIC
COUPLING
ANTENNA
RX_IN
TX_OUT
TRANSMITTER
13.56MHz READER
MAX66120
Typical Operating Circuit
19-5623; Rev 0; 11/10
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.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
PART TEMP RANGE PIN-PACKAGE
MAX66120K-000AA+ -25°C to +50°C Key Fob
Key Fob Mechanical Drawing appears at end of data sheet.
EVALUATION KIT
AVAILABLE
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Summary of Contents

Page 1 - MAX66120

General DescriptionThe MAX66120 combines 1024 bits of user EEPROM, a64-bit unique identifier (UID), and a 13.56MHz ISO15693 RF interface in a plastic

Page 2

MAX66120ISO 15693-Compliant 1Kb Memory Fob10 ______________________________________________________________________________________Figure 13. Uplink C

Page 3

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 11ISO 15693 Slave Sta

Page 4

MAX66120ISO 15693-Compliant 1Kb Memory Fob12 ______________________________________________________________________________________selected state and

Page 5

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 13Request FlagsThe co

Page 6

MAX66120ISO 15693-Compliant 1Kb Memory Fob14 ______________________________________________________________________________________REQUEST FLAGS COMM

Page 7

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 15Stay QuietThe Stay

Page 8

REQUEST FLAGS COMMAND UID(1 Byte) 2Bh (8 Bytes) REQUEST FLAGS COMMAND UID BLOCK NUMBER NEW BLOCK DATA (1 Byte) 21h (8 Bytes) (1 Byte) (8 B

Page 9

MAX66120Lock BlockThe Lock Block command permanently locks (write pro-tects) the selected block and reports the success of theoperation in the respons

Page 10

18 ______________________________________________________________________________________MAX66120ISO 15693-Compliant 1Kb Memory FobREQUEST FLAGS COMM

Page 11

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 19Write AFIThe Write

Page 12

MAX66120ISO 15693-Compliant 1Kb Memory Fob2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RA

Page 13

MAX66120ISO 15693-Compliant 1Kb Memory Fob20 ______________________________________________________________________________________Figure 17. CRC-16-C

Page 14

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 21Command-Specific IS

Page 15

MAX66120ISO 15693-Compliant 1Kb Memory Fob22 ______________________________________________________________________________________ISO 15693 Communica

Page 16

MAX66120ISO 15693-Compliant 1Kb Memory Fob______________________________________________________________________________________ 23ISO 15693 Communica

Page 17

MAX66120ISO 15693-Compliant 1Kb Memory FobMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxi

Page 18

MAX66120ISO 15693-Compliant 1Kb Memory Fob_______________________________________________________________________________________ 3RFFRONT-ENDVOLTAGER

Page 19

MAX66120ISO 15693-Compliant 1Kb Memory Fob4 _______________________________________________________________________________________DATA BYTE NUMBER (

Page 20

MAX66120ISO 15693-Compliant 1Kb Memory Fob_______________________________________________________________________________________ 5AFFECTED MEMORY ARE

Page 21

MAX66120ISO 15693-Compliant 1Kb Memory Fob6 _______________________________________________________________________________________ISO 15693 Communica

Page 22

MAX66120ISO 15693-Compliant 1Kb Memory Fob_______________________________________________________________________________________ 7The path from maste

Page 23

MAX66120ISO 15693-Compliant 1Kb Memory Fob8 _______________________________________________________________________________________Figure 9. Downlink

Page 24

MAX66120ISO 15693-Compliant 1Kb Memory Fob_______________________________________________________________________________________ 9Figure 10. Downlink

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