Datasheets»Maxim Integrated»DS2465P+T Datasheet

DS2465P+T Datasheet

Download or read online Maxim Integrated DS2465P+T SHA-256 Coprocessor with 1-Wire Master Function pdf datasheet.



Page
1 of 31
next
ABRIDGED DATA SHEET
SHA-256 Coprocessor with 1-Wire Master Function
General Description
The DS2465 is a SHA-256 coprocessor with built-in
®
1-Wire
master that provides the SHA-256 and memory
functionality required by a host system to communicate
with and operate a 1-Wire SHA-256 slave. In addition, it
performs protocol conversion between the I
and any attached 1-Wire SHA-256 slaves. For 1-Wire line
driving, internal user-adjustable timers relieve the system
host processor from generating time-critical 1-Wire wave-
forms, supporting both standard and overdrive 1-Wire
communication speeds. The 1-Wire line can be powered
down under software control. Strong pullup features sup-
port 1-Wire power delivery to 1-Wire devices such as
EEPROMs. When not in use, the DS2465 can be put in
sleep mode where power consumption is minimal.
Applications
Authentication of Consumables
Secure Feature Control
3V
2
(I
C PORT)
µC
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
����������������������������������������������������������������� Maxim Integrated Products 1
For information on other Maxim products, visit Maxim’s website at www.maxim-ic.com.
S SHA-256 Engine to Operate a Symmetric-Key-
Based Bidirectional Secure Authentication Model
S Two 32-Byte Pages of User EEPROM with Multiple
Programmable Protection Options
2
C master
S 1-Wire Master Port with Selectable Active or
Passive 1-Wire Pullup
S Strong 1-Wire Pullup Provided by an Internal Low-
Impedance Signal Path
S 1-Wire Port Can Be Powered Down Under
Software Control
2
S I
C Operating (Pullup) Voltage: 3.3V ±10%
S ESD Protection of ±8kV HBM (typ) on 1-Wire IO
Pin
S Operating Range: 3.3V ±10%, -40NC to +85NC
S 6-Pin TSOC Package
Ordering Information
Typical Application Circuit
R
P
R
= 1.1kΩ
P
V
CC
2
MAXIMUM I
C BUS CAPACITANCE 320pF
SDA
SCL
DS2465
1-Wire LINE
SLPZ
IO
DS28E15
#1
219-0017; Rev 0; 4/12
DS2465
Features
appears at end of data sheet.
DS28E15
DS28E15
#2
#n

Summary of Contents

Page 1

... Maxim Integrated Products, Inc. Maxim Integrated Products 1 For information on other Maxim products, visit Maxim’ ...

Page 30

... PART TEMP RANGE DS2465P -40°C to 85NC DS2465PT -40°C to 85NC Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. Maxim Integrated Products 42 ...

Page 31

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2012 Maxim Integrated Products © ...

Comments to this Datasheet