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Maxim Integrated Semiconductor Electronic Components Datasheet

DS28E01-100 Datasheet

1Kb Protected 1-Wire EEPROM

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ABRIDGED DATA SHEET
DS28E01-100
1Kb Protected 1-Wire EEPROM
with SHA-1 Engine
General Description
The DS28E01-100 combines 1024 bits of EEPROM with
challenge-and-response authentication security imple-
mented with the ISO/IEC 10118-3 Secure Hash
Algorithm (SHA-1). The 1024-bit EEPROM array is con-
figured as four pages of 256 bits with a 64-bit scratch-
pad to perform write operations. All memory pages can
be write protected, and one page can be put in
EPROM-emulation mode, where bits can only be
changed from a 1 to a 0 state. Each DS28E01-100 has
its own guaranteed unique 64-bit ROM registration num-
ber that is factory lasered into the chip. The DS28E01-
100 communicates over the single-contact 1-Wire® bus.
The communication follows the standard 1-Wire protocol
with the registration number acting as the node address
in the case of a multidevice 1-Wire network.
Applications
Printer Cartridge Configuration and Monitoring
Medical Sensor Authentication and Calibration
System Intellectual Property Protection
Typical Operating Circuit
VCC
μC
RPUP
IO
DS28E01-100
GND
Pin Configurations appear at end of data sheet.
Features
1024 Bits of EEPROM Memory Partitioned Into
Four Pages of 256 Bits
On-Chip 512-Bit SHA-1 Engine to Compute 160-
Bit Message Authentication Codes (MACs) and to
Generate Secrets
Write Access Requires Knowledge of the Secret
and the Capability of Computing and Transmitting
a 160-Bit MAC as Authorization
User-Programmable Page Write Protection for
Page 0, Page 3, or All Four Pages Together
User-Programmable OTP EPROM Emulation Mode
for Page 1 (“Write to 0”)
Communicates to Host with a Single Digital
Signal at 15.3kbps or 90.9kbps Using 1-Wire
Protocol
Switchpoint Hysteresis and Filtering to Optimize
Performance in the Presence of Noise
Reads and Writes Over 2.8V to 5.25V Voltage
Range from -40°C to +85°C
6-Lead TSOC and TDFN or 2-Lead TO-92 and SFN
Packages
Ordering Information
PART
DS28E01-100+
DS28E01P-100+
DS28E01P-100+T
DS28E01G-100+T&R
DS28E01Q-100+T&R
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
2 TO-92
6 TSOC
6 TSOC
2 SFN
6 TDFN-EP*
(2.5k pcs)
+Denotes a lead(Pb)-free/RoHS-compliant package.
T and T&R = Tape and reel.
*EP = Exposed pad.
Note to readers: This document is an abridged version of the full data sheet. To request the full data sheet, go to
www.maximintegrated.com/DS28E01 and click on Request Full Data Sheet.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
219-0007; Rev 8; 9/12


Maxim Integrated Semiconductor Electronic Components Datasheet

DS28E01-100 Datasheet

1Kb Protected 1-Wire EEPROM

No Preview Available !

ABRIDGED DATA SHEET
DS28E01-100
1Kb Protected 1-Wire EEPROM
with SHA-1 Engine
ABSOLUTE MAXIMUM RATINGS
IO Voltage Range to GND .......................................-0.5V to +6V
IO Sink Current ...................................................................20mA
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-55°C to +125°C
Lead Temperature (TSOC, TO-92, TDFN only;
soldering, 10s) ..............................................................+300°C
Soldering Temperature (reflow)
TSOC, TDFN .................................................................+260°C
TO-92 ............................................................................+250°C
SFN .......Refer to Application Note 4132: Attachment Methods
for the Electro-Mechanical SFN Package.
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
(TA = -40°C to +85°C.) (Note 1)
PARAMETER
IO PIN: GENERAL DATA
1-Wire Pullup Voltage
1-Wire Pullup Resistance
Input Capacitance
Input Load Current
SYMBOL
CONDITIONS
VPUP
RPUP
CIO
IL
(Note 2)
(Notes 2, 3)
(Notes 4, 5)
IO pin at VPUP
High-to-Low Switching Threshold VTL (Notes 5, 6, 7)
Input Low Voltage
VIL (Notes 2, 8)
Low-to-High Switching Threshold
VTH (Notes 5, 6, 9)
Switching Hysteresis
VHY (Notes 5, 6, 10)
Output Low Voltage
Recovery Time
(Notes 2,12)
Rising-Edge Hold-Off Time
(Notes 5, 13)
VOL
tREC
tREH
At 4mA current load (Note 11)
Standard speed, RPUP = 2.2k
Overdrive speed, RPUP = 2.2k
Standard speed
Overdrive speed
Time Slot Duration
(Notes 2, 14)
tSLOT
Standard speed
Overdrive speed
IO PIN: 1-Wire RESET, PRESENCE-DETECT CYCLE
Reset Low Time (Note 2)
tRSTL
Standard speed
Overdrive speed
Presence-Detect High Time
tPDH
Standard speed
Overdrive speed
Presence-Detect Low Time
Standard speed
tPDL
Overdrive speed
Presence-Detect Sample Time
(Notes 2, 15)
tMSP
Standard speed
Overdrive speed
MIN TYP MAX UNITS
2.8 5.25
0.3 2.2
1000
0.05
6.7
0.46
VPUP -
1.8
0.5
1.0
VPUP -
1.1
0.21 1.70
0.4
5
5
0.5 5.0
Not applicable (0)
65
11
V
k
pF
μA
V
V
V
V
V
μs
μs
μs
480 640
μs
48 80
15 60
μs
26
60 240
μs
8 24
60 75
μs
6 10
2 Maxim Integrated


Part Number DS28E01-100
Description 1Kb Protected 1-Wire EEPROM
Maker Maxim Integrated
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