Electrically erasable programmable read-only memory 1Kb protected
1-Wire EEPROM with SHA-1 Engine DS28E01P-100+T
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.
♦ 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
Packaging and transportation instructions
- According to the standard export packaging.
Customers can choose from cartons, wooden cases and wooden pallets
according to their own requirements.
Q&A
1. How to obtain the price?
We usually quote within 24 hours after receiving your inquiry
(except weekends and holidays). If you are in urgent need of a
price, please send us an email or contact us in any other way so
that we can provide you with a quotation.
2. What is your delivery time?
This depends on the quantity of the order and the season in which
you place the order. Usually, we can ship the goods within 7 to 15
days (for small batches), and for large batches, it takes about 30
days.
3. What are your payment terms?
Factory price, 30% deposit, 70%T/T payment before shipment.
4. What is the mode of transportation?
It can be transported by sea, air or express delivery (EMS, UPS,
DHL, TNT, FEDEX, etc.). Please confirm with us before placing an
order.
5. How do you help our business establish a long-term and good
relationship?
We maintain good quality and competitive prices to ensure that our
customers benefit.
2. We respect every customer as our friend. We do business with
them sincerely and make friends with them, no matter where they
come from.
