Detailed Description

The MAX66100 contains a 64-bit unique identifier (UID)

and a 13.56MHz ISO 15693 RF interface in a single

chip. The UID is accessed through standard ISO

15693 function commands. The data rate can be as

high as 26.69kbps. The MAX66100 supports AFI and

DSFID. Applications of the MAX66100 include driver

identification (fleet application), access control, and

asset tracking.

Overview

Figure 1 shows the relationships between the major

control and memory sections of the MAX66100.

Figure 2 shows the applicable ISO 15693 commands

and their purpose. The network function commands

allow the master to identify all slaves in its range and to

change their state, e.g., to select one for further com-

munication. The protocol for these is described in the

Network Function Commands section. All data is read

and written least significant bit (LSb) first, starting with

the least significant byte (LSB).

Parasite Power

As a wireless device, the MAX66100 is not connected to

any power source. It gets the energy for operation from

the surrounding RF field, which must have a minimum

strength as specified in the

Electrical Characteristics

table.

Unique Identification Number (UID)

Each MAX66100 contains a factory-programmed and

locked identification number that is 64 bits long

(Figure 3). The lower 36 bits are the serial number of the

chip. The next 8 bits store the device feature code, which

is 01h. Bits 45 to 48 are 0h. The code in bit locations 49 to

56 identifies the chip manufacturer, according to ISO/IEC

7816-6/AM1. This code is 2Bh for Maxim. The code in the

upper 8 bits is E0h. The UID is read accessible through

the Inventory and Get System Information commands.

ISO 15693-Compliant 64-Bit UID

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: System requirement.

Note 2: Production tested at 13.56MHz only.

Note 3: Guaranteed by simulation; not production tested.

which the MAX66100’s internal power-on reset signal is deasserted and the device is ready to receive a command frame.

Not characterized or production tested; guaranteed by simulation only.

Maximum Incident Magnetic Field Strength ..........141.5dBµA/m

Operating Temperature Range ...........................-25°C to +50°C

Relative Humidity ..............................................(Water Resistant)

Storage Temperature Range ...............................-25°C to +50°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RF INTERFACE

Carrier Frequency

(Notes 1, 2)

13.553

13.560

13.567

MHz

At 25°C, MAX66100E

110.5

Activation Field Strength

(Note 3)

At 25°C, MAX66100K

122.0

dBμA/m

Maximum Field Strength

At 25°C (Note 3)

137.5

dBμA/m

Power-Up Time

(Notes 3, 4)

1.0

ms

RF

FRONT-

END

VOLTAGE

REGULATOR

INTERNAL SUPPLY

UID, AFI, DSFID

ISO 15693

FRAME

FORMATTING

AND

ERROR

DETECTION

DATA

MODULATION

Figure 1. Block Diagram