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DS2431Q+TR Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # DS2431Q+TR
Description  1024-Bit, 1-Wire EEPROM
Download  25 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS2431Q+TR Datasheet(HTML) 1 Page - Maxim Integrated Products

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1024-Bit, 1-Wire EEPROM
________________________________________________________________
Maxim Integrated Products
1
Rev 6; 8/08
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.
General Description
The DS2431 is a 1024-bit, 1-Wire® EEPROM chip orga-
nized as four memory pages of 256 bits each. Data is
written to an 8-byte scratchpad, verified, 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 communi-
cates over the single-conductor 1-Wire bus. The commu-
nication follows the standard 1-Wire protocol. Each
device has its own unalterable and unique 64-bit ROM
registration number that is factory lasered into the chip.
The registration number is used to address the device in
a multidrop, 1-Wire net environment.
Applications
Accessory/PCB Identification
Medical Sensor Calibration Data Storage
Analog Sensor Calibration Including IEEE
P1451.4 Smart Sensors
Ink and Toner Print Cartridge Identification
After-Market Management of Consumables
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, Typical)
♦ Reads and Writes Over a Wide Voltage Range
from 2.8V to 5.25V from -40°C to +85°C
♦ Communicates to Host with a Single Digital
Signal at 15.4kbps or 125kbps Using 1-Wire
Protocol
♦ Also Available as Automotive Version Meeting
AEC-Q100 Grade 1 Qualification Requirements
(DS2431-A1)
Ordering Information
IO
RPUP
VCC
μC
GND
DS2431
Typical Operating Circuit
Note: The leads of TO-92 packages on tape and reel are
formed to approximately 100-mil (2.54mm) spacing. For
details, refer to the package outline drawing.
+
Denotes a lead-free/RoHS-compliant package.
T&R = Tape and reel.
*
EP = Exposed pad.
**
Contact factory for availability and guidelines on qualified
usage conditions of the lead-free UCSPR.
PART
TEMP RANGE
PIN-PACKAGE
DS2431+
-40°C to +85°C
3 TO-92
DS2431+T&R
-40°C to +85°C
3 TO-92
DS2431P+
-40°C to +85°C
6 TSOC
DS2431P+T&R
-40°C to +85°C
6 TSOC
DS2431G+
-40°C to +85°C
2 SFN
DS2431G+T&R
-40°C to +85°C
2 SFN
DS2431Q+T&R
-40°C to +85°C
6 TDFN-EP* (2.5k pcs)
DS2431X+S
-40°C to +85°C
3x3 UCSPR** (2.5k pcs)
DS2431X+
-40°C to +85°C
3x3 UCSPR** (10k pcs)
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.


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