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DS2431-A1 fiches techniques PDF

Maxim Integrated - 1-Wire EEPROM

Numéro de référence DS2431-A1
Description 1-Wire EEPROM
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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DS2431-A1 fiche technique
Rev 1; 3/08
1024-Bit, 1-Wire EEPROM
for Automotive Applications
General Description
The DS2431-A1 is an AEC-Q100 Grade 1 qualified ver-
sion of the DS2431. The logical behavior of both ver-
sions is identical. The DS2431-A1 is a 1024-bit, 1-Wire®
EEPROM chip organized as four memory pages of 256
bits each. Data is written to an 8-byte scratchpad, veri-
fied, and then copied to the EEPROM memory. As a
special feature, the four memory pages can individually
be write protected or put in EPROM-emulation mode,
where bits can only be changed from a 1 to a 0 state.
The DS2431-A1 communicates over the single-conduc-
tor 1-Wire bus. The communication follows the standard
1-Wire protocol. Each device has its own unalterable
and unique 64-bit ROM registration number that is fac-
tory lasered into the chip. The registration number is
used to address the device in a multidrop 1-Wire net
environment.
Applications
Automotive Sensor Identification and Calibration
Data Storage
Automotive Cable Assembly Identification
Accessory/PCB Identification
Commands and modes are capitalized for clarity.
Typical Operating Circuit
Features
1024 Bits of EEPROM Memory Partitioned Into
Four Pages of 256 Bits
Individual Memory Pages Can Be Permanently
Write Protected or Put in EPROM-Emulation Mode
(“Write to 0”)
Switchpoint Hysteresis and Filtering to Optimize
Performance in the Presence of Noise
IEC 1000-4-2 Level 4 ESD Protection (+8kV
Contact, +15kV Air, Typ)
Reads and Writes Over a 4.5V to 5.25V Voltage
Range from -40°C to +125°C
Communicates to Host with a Single Digital
Signal at 15.4kbps Using 1-Wire Protocol
Meets AEC-Q100 Grade 1 Qualification
Requirements
Also Available as Standard Version for Industrial
Temperature Range (DS2431)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
DS2431P-A1+
-40°C to +125°C 6 TSOC
DS2431P-A1+T -40°C to +125°C 6 TSOC
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configuration
VCC
μC
RPUP
I/O
DS2431-A1
GND
TOP VIEW
+
GND 1
I/O 2
N.C. 3
DS2431-A1
6 N.C.
5 N.C.
4 N.C.
TSOC
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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