Operating Temperature Range ........................... -20°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -55°C to +125°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°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.
Package Thermal Characteristics
(Note 1)
SO
Junction-to-Ambient Thermal Resistance (θ
JA
).........136°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ...............38°C/W
TDFN
Junction-to-Ambient Thermal Resistance (θ
JA
)...........60°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ...............30°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(T
A
= -20°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SHA-256 ENGINE
Computation Time
EEPROM
Programming Time for a 32-Bit
Page Block or Protection
Write/Erase Cycling Endurance
Data Retention
RF PORT
Carrier Frequency
Internal Tuning Cap
Operating Field
tPROG
NCY
t
DR
fC
CTUN
HISO
HMIN_10
Activation Field Strength
HMIN_30
HMIN_100
Write/SHA Field Strength
RF Access in Progress Time
10% Carrier Modulation Index
MI = (A - B)/(A + B)
100% Carrier Modulation Index
MI = (A - B)/(A + B)
10% Modulation Min Pulse
Width
HWR
tRFAIP
CMI_10
CMI_100
t1 MIN
(Notes 10, 11)
(Notes 10, 11)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 14)
10
95
7.0
(Note 4)
TA = +85°C (Notes 5, 6)
TA = +85°C (Notes 7, 8, 9)
(Note 10)
f = 13.56MHz (Note 11)
(Note 10)
TA = +25°C, 10% modulation
(Notes 11, 12)
TA = +25°C, 30% modulation
(Notes 11, 12)
TA = +25°C, 100% modulation
(Notes 11, 12)
TA = +25°C (Notes 11, 12, 13)
150
94
104
103.5
113
1.1
30
100
dBµA/m
ms
%
%
µs
dBµA/m
100k
10
13.553
13.560
27.5
5000
13.567
10
ms
—
Years
MHz
pF
mA/m
tCSHA
(Note 3)
2
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated
│
2
ABRIDGED DATA SHEET
MAX66240
DeepCover Secure Authenticator with
ISO 15693, SHA-256, and 4Kb User EEPROM
Electrical Characteristics (continued)
(T
A
= -20°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
10% Modulation Max Pulse
Width
10% Modulation Min Low Time
10% Modulation Max Low Time
10% Modulation Min Rise Time
10% Modulation Max Rise Time
100% Modulation Min Pulse
Width
100% Modulation Min Pulse
Width
100% Modulation Max Pulse
Width
100% Modulation Max Low
Time
100% Modulation Min Rise
Time
100% Modulation Max Rise
Time
SYMBOL
t1 MAX
t2 MIN
t2 MAX
t3 MIN
t3 MAX
t1 MIN
t1 MAX
t2 MIN
t2 MAX
t3 MIN
t3 MAX
CONDITIONS
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 14)
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 14)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 15)
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 15)
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Note 11)
Refer to ISO 15693-2 Section
7.1 (Notes 11, 15)
0
3.0
6.5
9.44
0
2.5
6.5
9.44
7.0
9.44
MIN
TYP
MAX
9.44
UNITS
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
Note 2:
Limits are 100% production tested at T
A
= +25°C or T
A
= +85°C. Limits over the operating temperature range and relevant
supply voltage range are guaranteed by design and characterization. Typical values are at +25°C.
Note 3:
For commands where the t
CSHA
interval occurs see the applicable communication examples sections. For RF commands,
the interval begins after the EOF of a valid request frame. The interval ends once the device’s self-timed SHA-256 compu-
tation cycle is complete.
Note 4:
For commands where the t
PROG
interval occurs see the applicable communication examples sections. For RF commands,
the interval begins after the EOF of a valid request frame. The interval ends once the device’s self-timed EEPROM write
cycle is complete.
Note 5:
Write-cycle endurance is tested in compliance with JESD47G.
Note 6:
Not 100% production tested; guaranteed by reliability qualification.
Note 7:
Data retention is tested in compliance with JESD47G.
Note 8:
Guaranteed by 100% production test at elevated temperature for a shorter time; equivalence of this production test to the
data sheet limit at operating temperature range is established by reliability testing.
Note 9:
EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated tem-
peratures is not recommended.
Note 10:
System requirement.
Note 11:
Guaranteed by design and/or characterization only. Not production tested.
Note 12:
Characterized in accordance with ISO/IEC 10373-7.
Note 13:
Applies to Read/Write Scratchpad (writing), Write Memory, Compute and Read Page MAC, Set Protection, Authenticated
Write Memory RF Setup, Authenticated Write Memory RF Execute, Authenticated Set Protection RF Setup, and
Authenticated Set Protection RF Execute commands.
Note 14:
Field strength between 350mA/m and 3A/m.
Note 15:
Field strength between 350mA/m and 5A/m.
www.maximintegrated.com
Maxim Integrated
│
3
ABRIDGED DATA SHEET
MAX66240
DeepCover Secure Authenticator with
ISO 15693, SHA-256, and 4Kb User EEPROM
Pin Configurations
TOP VIEW
D.N.C.
AC2
AC1
D.N.C.
1
2
3
4
D.N.C.
D.N.C.
D.N.C.
D.N.C.
D.N.C.
+
8 D.N.C.
7 D.N.C.
6 D.N.C.
5 D.N.C.
10
9
8
7
6
MAX66240
MAX66240
SO
+
1
2
3
4
5
D.N.C. AC2 D.N.C. AC1 D.N.C.
TDFN
Pin Descriptions
PIN
SO
1, 4–8
2
3
TDFN
1, 3, 5–10
2
4
NAME
D.N.C.
AC2
AC1
Do Not Connect
Antenna Connection
Antenna Connection
FUNCTION
www.maximintegrated.com
Maxim Integrated
│
4
ABRIDGED DATA SHEET
MAX66240
DeepCover Secure Authenticator with
ISO 15693, SHA-256, and 4Kb User EEPROM
be copied to EEPROM. If the authentication hurdle is
passed, the write protection and EPROM emulation mode
protections still determine the effect of the write access.
Any protection, if activated, applies to individual memory
pages. As a factory default, none of the protections is
activated. Once authentication protection is activated, the
reader must authenticate itself for memory writes as well
as for additional changes to the memory protection.
In addition to its important use as a unique data value in
cryptographic SHA-256 computations, the device’s 64-bit
ROM ID can be used to electronically identify the object
to which the MAX66240 is associated. Applications of the
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Embedded System
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