Storage Temperature Range ...............................-25°C to +50°C
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.
ELECTRICAL CHARACTERISTICS
(T
A
= -25°C to +50°C.) (Note 1)
PARAMETER
RF INTERFACE
Carrier Frequency
Operating Magnetic Field Strength
(Note 1)
Power-Up Time
f
C
H
t
POR
(Note 1)
At +25°C, MAX66000E
At +25°C, MAX66000K
(Note 2)
13.553
111.0
123.5
13.560
13.567
137.5
137.5
1.0
MHz
dBμA/m
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
System requirement.
Note 2:
Measured from the time at which the incident field is present with strength greater than or equal to H
(MIN)
to the time at
which the MAX66000’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.
Detailed Description
The MAX66000 combines a 64-bit UID and a
13.56MHz RF interface (ISO/IEC 14443 Type B, Parts
2-4) in a single chip. The UID can be read through the
ISO/IEC 14443-4 block transmission protocol, where
requests and responses are exchanged through I-
blocks once a device is in the ACTIVE state. The read-
er must support a frame size of at least 19 bytes. The
data rate can be as high as 847.5kbps. The MAX66000
supports AFI and CID. ISO 14443 functions not sup-
ported are chaining, frame-waiting time extension, and
power indication. Applications of the MAX66000
include driver identification (fleet application), access
control, and asset tracking.
INTERNALSUPPLY
VOLTAGE
REGULATOR
RF
FRONT-
END
ISO 14443
FRAME
FORMATTING
AND
ERROR
DETECTION
UID, AFI,
APPLICATION
DATA FIELD
DATA
f
c
Overview
Figure 1 shows the relationships between the major
control and memory sections of the MAX66000.
Figure 2 shows the hierarchical structure of the ISO/IEC
14443 Type B-compliant access protocol. The master
must first apply network function commands to put the
MAX66000 into the ACTIVE state to read the UID or
system information. The protocol required for these net-
work function commands is described in the
Network
Function Commands
section. Once the MAX66000 is in
the ACTIVE state, the master can use the memory func-
tion commands. Upon completion of such a command,
2
MODULATION
Figure 1. Block Diagram
the MAX66000 returns to the ACTIVE state and the
master can issue another memory function command or
deselect the device, which returns it to the HALT state.
The protocol for these commands is described in the
Memory Commands
section. All data is read and writ-
ten least significant bit (LSb) first, starting with the least
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