DS28E35_V01 [MAXIM]
DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM;
| 型号： | DS28E35_V01 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | DeepCover Secure Authenticator with 1-Wire ECDSA and 1Kb User EEPROM 可编程只读存储器 电动程控只读存储器 电可擦编程只读存储器 CD |
| 文件： | 总5页 (文件大小：347K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ABRIDGED DATA SHEET
EVALUATION KIT AVAILABLE
DS28E35
DeepCover Secure Authenticator with
1-Wire ECDSA and 1Kb User EEPROM
General Description
DeepCover embedded security solutions cloak sensitive
data under multiple layers of advanced physical security
to provide the most secure key storage possible.
Features
●ꢀ ECDSAꢀEngineꢀforꢀPublic-KeyꢀSignatureꢀUsingꢀaꢀ
Defined SEC Domain Parameter Set
®
●ꢀ On-ChipꢀHardwareꢀRandomꢀNumberꢀGenerator
The DeepCover Secure Authenticator (DS28E35) pro-
vides a highly secure solution for a host controller to
authenticate peripherals based on the industry stan-
dard (FIPS 186) public-key based Elliptic Curve Digital
Signature Algorithm (ECDSA). The ECDSA engine com-
putes keys and signatures using a pseudorandom curve
over a prime field according to the “Standards for Efficient
Cryptography (SEC)”. The private and public key can
be computed by the device or installed by the user and
optionally locked. Separate memory space is set aside to
store and lock a public-key certificate as it is needed to
verify authenticity. In addition to ECDSA-related memory,
the device has 1024 bits of user memory that is organized
as four pages of 256 bits. Page protection modes include
write protection, read protection, and one-time-program-
mable (OTP) memory emulation modes. The DS28E35
also features a one-time settable, nonvolatile 17-bit dec-
rement-on-command counter, which can be used to keep
track of the lifetime of the object to which the DS28E35
is attached. Each device has its own guaranteed unique
64-bit ROM identification number (ROM ID) that is fac-
tory programmed into the chip. This unique ROM ID is
used as a fundamental input parameter for cryptographic
operations and also serves as an electronic serial number
within the application. The DS28E35 communicates over
●ꢀ PrivateꢀandꢀPublicꢀKeyꢀCanꢀBeꢀComputedꢀbyꢀ
the Device or Loaded from Outside with Optional
Automatic Locking
●ꢀ SeparateꢀUser-ProgrammableꢀandꢀLockableꢀMemoryꢀ
SpaceꢀtoꢀStoreꢀaꢀPublic-KeyꢀCertificate
●ꢀ 17-BitꢀOne-TimeꢀSettable,ꢀNonvolatileꢀDecrement-
On-Command Counter
●ꢀ SHA-256ꢀEngineꢀtoꢀComputeꢀaꢀHashꢀofꢀEEPROMꢀ
PageꢀDataꢀandꢀHostꢀChallengeꢀforꢀSubsequentꢀ
ECDSA Signing
●ꢀ 1024ꢀBitꢀofꢀUserꢀEEPROMꢀOrganizedꢀasꢀFourꢀPagesꢀ
ofꢀ256ꢀBits
●ꢀ ProgrammableꢀandꢀIrreversibleꢀUserꢀEEPROMꢀ
Protection Modes Including Write Protection, Read
Protection, and OTP/EPROM Emulation for Individual
Memory Pages
●ꢀ UniqueꢀFactory-Programmedꢀ64-BitꢀIdentificationꢀ
Number
●ꢀ Single-Contactꢀ1-WireꢀInterfaceꢀCommunicatesꢀwithꢀ
HostꢀatꢀUpꢀtoꢀ76.9kbps
●ꢀ OperatingꢀRange:ꢀ3.3Vꢀ±10%,ꢀ-40ºCꢀtoꢀ+85ºC
●ꢀ ±8kVꢀHBMꢀESDꢀProtectionꢀ(typ)ꢀforꢀIOꢀPin
●ꢀ 8-PinꢀTDFNꢀandꢀ6-PinꢀTSOCꢀPackages
®
the single-contact 1-Wire bus at overdrive speed. The
communication follows the 1-Wire protocol with the ROM
ID acting as node address in the case of a multi-device
1-Wire network.
Typical Application Circuit
3.3V
Applications
●ꢀ AuthenticationꢀofꢀConsumables
R1
10kΩ
●ꢀ PeripheralꢀAuthentication
●ꢀ MedicalꢀSensors
V
CC
PIOX
PIOY
●ꢀ PrinterꢀCartridgeꢀIdentificationꢀandꢀAuthentication
Q1
R
PUP
DS28E35
IO
BSS84
µC
Ordering Information appears at end of data sheet.
1-WIRE
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/DS28E35.related.
GND
GND
DeepCover and 1-Wire are registered trademarks of Maxim
Integrated Products, Inc.
219-0028; Rev 4; 4/14
ABRIDGED DATA SHEET
DS28E35
DeepCover Secure Authenticator with
1-Wire ECDSA and 1Kb User EEPROM
Absolute Maximum Ratings
IOꢀVoltageꢀRangeꢀtoꢀGND....................................-0.5Vꢀtoꢀ+4.0V
IO Sink Current...................................................................20mA
Operating Temperature Range............................-40ºCꢀtoꢀ+85ºC
Junction Temperature......................................................+150ºC
Storage Temperature Range.............................-55ºCꢀtoꢀ+125ºC
Lead Temperature (soldering, 10s) .................................+300ºC
Soldering Temperature (reflow).......................................+260ºC
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)
Package Thermal Characteristics
TSOC
TDFN
Junction-to-AmbientꢀThermalꢀResistanceꢀ(θ ) ..........60°C/W
Junction-to-AmbientꢀThermalꢀResistanceꢀ(θ ) .....126.7°C/W
JA
JA
ꢀ
Junction-to-CaseꢀThermalꢀResistanceꢀ(θ )...............37°C/W
ꢀ Junction-to-CaseꢀThermalꢀResistanceꢀ(θ )...............11°C/W
JC
JC
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 ꢀ=ꢀ-40ºCꢀtoꢀ+85ºC.)ꢀ(Noteꢀ2)
A
PARAMETER
IO PIN: GENERAL DATA
1-WireꢀPullupꢀVoltage
1-Wire Pullup Resistance
Input Capacitance
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
(Noteꢀ3)
ꢀ=ꢀ3.3Vꢀ±10%ꢀ(Noteꢀ4)
2.97
3.63
V
Ω
PUP
R
V
300
1500
PUP
PUP
C
(Notesꢀ5,ꢀ6)
IOꢀpinꢀatꢀV
1500
5
pF
µA
V
IO
Input Load Current
I
50
L
PUP
High-to-LowꢀSwitchingꢀThreshold
InputꢀLowꢀVoltageꢀ
V
(Notesꢀ6,ꢀ7,ꢀ8)
(Notesꢀ3,ꢀ9)
0.65ꢀxꢀV
TL
PUP
V
0.3
V
IL
Low-to-HighꢀSwitchingꢀThreshold
SwitchingꢀHysteresis
OutputꢀLowꢀVoltage
V
V
V
(Notesꢀ6,ꢀ7,ꢀ10)
(Notesꢀ6,ꢀ7,ꢀ11)
0.75ꢀxꢀV
V
TH
HY
OL
PUP
0.3
V
I
ꢀ=ꢀ4mAꢀ(Noteꢀ12)
0.4
V
OL
Recovery Time
t
R
ꢀ=ꢀ1500Ωꢀ(Notesꢀ3,ꢀ13)
5
µs
µs
REC
PUP
Time Slot Duration
t
(Notesꢀ3,ꢀ14)
13
SLOT
IO PIN: 1-Wire RESET, PRESENCE DETECT CYCLE
Reset Low Time
t
(Noteꢀ3)
48
48
8
80
10
µs
µs
µs
RSTL
ResetꢀHighꢀTimeꢀ
t
(Noteꢀ15)
(Notesꢀ3,ꢀ16)
RSTH
Presence Detect Sample Time
IO PIN: 1-Wire WRITE
Write-Zero Low Time
Write-One Low Time
IO PIN: 1-Wire READ
Read Low Time
t
MSP
t
t
(Notesꢀ3,ꢀ17)
(Notesꢀ3,ꢀ17)
8
1
16
2
µs
µs
W0L
W1L
t
(Notesꢀ3,ꢀ18)
(Notesꢀ3,ꢀ18)
1
2 - d
µs
µs
RL
Read Sample Time
t
t
ꢀ+ꢀd
RL
2
MSR
Maxim Integrated
│ 2
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ABRIDGED DATA SHEET
DS28E35
DeepCover Secure Authenticator with
1-Wire ECDSA and 1Kb User EEPROM
Electrical Characteristics (continued)
(T ꢀ=ꢀ-40ºCꢀtoꢀ+85ºC.)ꢀ(Noteꢀ2)
A
PARAMETER
EEPROM
SYMBOL
CONDITIONS
MIN
TYP
MAX
Programming Current
ProgrammingꢀTimeꢀUnit
Write/Erase Cycling Endurance
Data Retention
I
t
V
ꢀ=ꢀ3.63Vꢀ(Notesꢀ6,ꢀ19)
1
mA
ms
PROG
PROG
PUP
Refer to the full data sheet.
T ꢀ=ꢀ+85ºCꢀ(Notesꢀ21,ꢀ22)
N
100k
10
—
CY
A
t
T ꢀ=ꢀ+85ºCꢀ(Notesꢀ23,ꢀ24,ꢀ25)
years
DR
A
ECDSA ENGINE
Computation Current
KeyꢀPairꢀComputationꢀTime
Signature Computation Time
I
mA
ms
ms
ECE
GKP
GPS
t
t
Refer to the full data sheet.
Note 2:ꢀ Limitsꢀareꢀ100%ꢀproductionꢀtestedꢀatꢀT ꢀ=ꢀ+25ºCꢀandꢀT ꢀ=ꢀ+85ºC.ꢀLimitsꢀoverꢀtheꢀoperatingꢀtemperatureꢀrangeꢀandꢀ
A
A
relevant supply voltage range are guaranteed by design and characterization. Typical values are at T ꢀ=ꢀ+25ºC.
A
Note 3: System requirement.
Note 4: Maximum allowable pullup resistance is a function of the number of 1-Wire devices in the system and 1-Wire recovery
times. The specified value here applies to systems with only one device and with the minimum 1-Wire recovery times.
Note 5: TypicalꢀvalueꢀrepresentsꢀtheꢀinternalꢀparasiteꢀcapacitanceꢀwhenꢀV
is first applied. Once the parasite capacitance is
PUP
charged, it does not affect normal communication.
Note 6: Guaranteedꢀbyꢀdesignꢀand/orꢀcharacterizationꢀonly;ꢀnotꢀproductionꢀtested.
Note 7: ,ꢀV ,ꢀandꢀV ꢀareꢀaꢀfunctionꢀofꢀtheꢀinternalꢀsupplyꢀvoltage,ꢀwhichꢀisꢀaꢀfunctionꢀofꢀV
V
, R
, 1-Wire timing, and
TL TH
HY
PUP PUP
capacitiveꢀloadingꢀonꢀIO.ꢀLowerꢀV
, higher R
, shorter t
, and heavier capacitive loading all lead to lower values
PUP
PUP
REC
ofꢀV ,ꢀV ,ꢀandꢀV
.
TL TH
HY
Note 8:ꢀ Voltageꢀbelowꢀwhich,ꢀduringꢀaꢀfallingꢀedgeꢀonꢀIO,ꢀaꢀlogic-zeroꢀisꢀdetected.
Note 9:ꢀ TheꢀvoltageꢀonꢀIOꢀmustꢀbeꢀlessꢀthanꢀorꢀequalꢀtoꢀV at all times the master is driving IO to a logic-zero level.
ILMAX
Note 10:ꢀ Voltageꢀaboveꢀwhich,ꢀduringꢀaꢀrisingꢀedgeꢀonꢀIO,ꢀaꢀlogic-oneꢀisꢀdetected.
Note 11:ꢀ AfterꢀV ꢀisꢀcrossedꢀduringꢀaꢀrisingꢀedgeꢀonꢀIO,ꢀtheꢀvoltageꢀonꢀIOꢀmustꢀdropꢀbyꢀatꢀleastꢀV
to be detected as logic-zero.
TH
HY
Note 12:ꢀ TheꢀI-Vꢀcharacteristicꢀisꢀlinearꢀforꢀvoltagesꢀlessꢀthanꢀ1V.
Note 13:ꢀ Appliesꢀtoꢀaꢀsingleꢀdeviceꢀattachedꢀtoꢀaꢀ1-Wireꢀline.ꢀ100%ꢀproductionꢀtestedꢀatꢀT ꢀ=ꢀ+85ºC,ꢀ+25ºC,ꢀandꢀ-40ºC.
A
Note 14: Defines maximum possible bit rate. Equal to 1/(t
ꢀ+ꢀt
).
W0LMIN
RECMIN
Note 15: An additional reset or communication sequence cannot begin until the reset high time has expired.
Note 16: Interval after t during which a bus master can read a logic-zero on IO if there is a DS28E35 present. The power-up
RSTL
presence detect pulse could be outside this interval, but is complete within 2ms after power-up.
Note 17:ꢀ εꢀinꢀFigure 11ꢀrepresentsꢀtheꢀtimeꢀrequiredꢀforꢀtheꢀpullupꢀcircuitryꢀtoꢀpullꢀtheꢀvoltageꢀonꢀIOꢀupꢀfromꢀV ꢀtoꢀV . The actual
IL
TH
maximum duration for the master to pull the line low is t
ꢀ+ꢀt ꢀ-ꢀεꢀandꢀt
ꢀ+ꢀt ꢀ-ꢀε,ꢀrespectively.
W1LMAX
F
W0LMAX F
Note 18: δꢀinꢀFigure 11ꢀrepresentsꢀtheꢀtimeꢀrequiredꢀforꢀtheꢀpullupꢀcircuitryꢀtoꢀpullꢀtheꢀvoltageꢀonꢀIOꢀupꢀfromꢀV to the input-high
IL
threshold of the bus master. The actual maximum duration for the master to pull the line low is t
ꢀ+ꢀt .
RLMAX
F
Note 19: Current drawn from IO during the EEPROM programming interval. The pullup circuit on IO during the programming interval
shouldꢀbeꢀsuchꢀthatꢀtheꢀvoltageꢀatꢀIOꢀisꢀgreaterꢀthanꢀorꢀequalꢀtoꢀ2.5V.
Note 20: Refer to the full data sheet.
Note 21: Write-cycleꢀenduranceꢀisꢀtestedꢀinꢀcomplianceꢀwithꢀJESD47G.
Note 22: Notꢀ100%ꢀproductionꢀtested;ꢀguaranteedꢀbyꢀreliabilityꢀmonitorꢀsampling.
Note 23: DataꢀretentionꢀisꢀtestedꢀinꢀcomplianceꢀwithꢀJESD47G.
Note 24: Guaranteedꢀbyꢀ100%ꢀproductionꢀtestꢀatꢀelevatedꢀtemperatureꢀforꢀaꢀshorterꢀtime;ꢀequivalenceꢀofꢀthisꢀproductionꢀtestꢀtoꢀtheꢀ
data sheet limit at operating temperature range is established by reliability testing.
Note 25: EEPROM writes can become nonfunctional after the data-retention time is exceeded. Long-term storage at elevated
temperatures is not recommended.
Note 26: Refer to the full data sheet.
Note 27: Refer to the full data sheet.
Note 28: Refer to the full data sheet.
Maxim Integrated
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ABRIDGED DATA SHEET
DS28E35
DeepCover Secure Authenticator with
1-Wire ECDSA and 1Kb User EEPROM
Pin Configuration
TOP VIEW
N.C. N.C. N.C. N.C.
+
8
7
6
5
GND
IO
1
2
3
6
5
4
N.C.
N.C.
N.C.
DS28E35
DS28E35
TSOC
N.C.
2 8 E 3 5
y m r r F
EP
+
1
2
3
4
IO GND N.C. N.C.
PACKAGE SIZES NOT DRAWN TO SCALE
TDFN
(2mm x 3mm)
Pin Description
PIN
NAME
FUNCTION
TSOC
TDFN-EP
1
2
2
1
GND
IO
GroundꢀReference
1-WireꢀBusꢀInterface.ꢀOpen-drainꢀsignalꢀthatꢀrequiresꢀanꢀexternalꢀpullupꢀresistor.
NotꢀConnected
3–6
3–8
N.C.
Exposed Pad. Solder evenly to the board’s ground plane for proper operation. Refer to
ApplicationꢀNoteꢀ3273:ꢀExposedꢀPads:ꢀA Brief Introduction for additional information.
—
EP
EP
Maxim Integrated
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ABRIDGED DATA SHEET
DS28E35
DeepCover Secure Authenticator with
1-Wire ECDSA and 1Kb User EEPROM
Ordering Information
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages.ꢀNoteꢀ
thatꢀaꢀ“+”,ꢀ“#”,ꢀorꢀ“-”ꢀinꢀtheꢀpackageꢀcodeꢀindicatesꢀRoHSꢀstatusꢀ
only. Package drawings may show a different suffix character, but
theꢀdrawingꢀpertainsꢀtoꢀtheꢀpackageꢀregardlessꢀofꢀRoHSꢀstatus.
PART
TEMP RANGE
PIN-PACKAGE
DS28E35Q+T**
DS28E35P+
DS28E35P+T
-40ºCꢀtoꢀ+85ºC 8ꢀTDFN-EP*ꢀ(2.5kꢀpcs)
-40ºCꢀtoꢀ+85ºC 6 TSOC
-40ºCꢀtoꢀ+85ºC 6 TSOC (4k pcs)
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
6 TSOC
D6+1
21-0382
21-0174
90-0321
90-0091
*EP = Exposed pad.
8ꢀTDFN-EP
T823+1
**Future product—contact factory for availability.
Note to readers: This document is an abridged version of the full data sheet. Additional device information is available
only in the full version of the data sheet. To request the full data sheet, go to www.maximintegrated.com/DS28E35 and
click on Request Full Data Sheet.
Maxim Integrated
│ 40
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