PRELIMINARY
DS2433
4kb 1-Wire EEPROM
www.maxim-ic.com
PIN ASSIGNMENT
FEATURES
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4096 bits Electrically Erasable Programmable
Read-Only Memory (EEPROM)
Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48bit serial number + 8-bit CRC tester) assures
absolute identity because no two parts are
alike
Built-in multidrop controller ensures
compatibility with other MicroLAN™
products
Memory partitioned into sixteen 256-bit pages
for packetizing data
256-bit scratchpad with strict read/write
protocols ensures integrity of data transfer
Reduces control, address, data, and power to a
single data pin
Directly connects to a single port pin of a
microprocessor and communicates at up to
16.3kbps
Overdrive mode boosts communication speed
to 142kps
8-bit family code specifies DS2433
communication requirements to reader
Presence detector acknowledges when reader
first applies voltage
Low cost PR-35 or 8-pin SO surface mount
package
Reads and writes over a wide voltage range of
2.8V to 6.0V from -40°C to +85°C
PR-35
NC
1
8
NC
NC
2
7
NC
DATA
3
6
NC
GND
4
5
NC
8-Pin SO (208mil)
1 2
3
1 2
3
PR-35
BOTTOM VIEW
PIN DESCRIPTION
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5-8
PR-35
Ground
Data
NC
—
—
SO
NC
NC
Data
Ground
NC
ORDERING INFORMATION
DS2433
DS2433S
DS2433S/T&R
DS2433X
DS2433X-S
PR-35 package
8-pin SOIC package
Tape & Reel version of
DS2433S
Chip Scale Pkg., Tape &
Reel
Chip-Scale Pkg, 2.5k pc.,
Tape & Reel
SILICON LABEL DESCRIPTION
The DS2433 4kb 1-Wire® EEPROM identifies and stores relevant information about the product to which
it is associated. This lot or product specific information can be accessed with minimal interface, for
example a single port pin of a microcontroller. The DS2433 consists of a factory-lasered registration
1-Wire is a registered trademark of Dallas Semiconductor.
MicroLAN is a trademark of Dallas Semiconductor.
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