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
Activation Field Strength
(Note 3)
Maximum Field Strength
Power-Up Time
f
C
H
MIN
H
MAX
t
POR
(Notes 1, 2)
At 25°C, MAX66100E
At 25°C, MAX66100K
At 25°C (Note 3)
(Notes 3, 4)
13.553
13.560
110.5
122.0
137.5
1.0
13.567
MHz
dBμA/m
dBμA/m
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Note 2:
Note 3:
Note 4:
System requirement.
Production tested at 13.56MHz only.
Guaranteed by simulation; not production tested.
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 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.
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.
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.
INTERNAL SUPPLY
VOLTAGE
REGULATOR
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).
RF
FRONT-
END
ISO 15693
FRAME
FORMATTING
AND
ERROR
DETECTION
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
据外媒报道，萨里大学（University of Surrey）的研究人员开发出一种无需依赖GPS即可在人口密集的城市地区精确定位设备位置的人工智能系统。该系统可将定位误差从734米缩小到22米以内，这对于自动驾驶汽车和救援车辆等技术的发展意义重大。 图片来源： 萨里大学 在发表于《IEEE Robotics and Automation Letters》的论文中，研究人员介绍了PEn...[详细]
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