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FEATURES
§ 4096 bits Electrically Erasable Programmable
Read-Only Memory (EEPROM)
§ Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48-
bit 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
16.3kbits per second
§ Overdrive mode boosts communication speed
to 142kbits per second
§ 8-bit family code specifies DS2433-Z01
communication requirements to reader
§ Presence detector acknowledges when reader
first applies voltage
§ Low-cost PR-35, 8-pin SO, or solder bumped
flip-chip package
§ Reads and writes over a wide voltage range of
2.8V to 6.0V from -40°C to +85°C
PIN ASSIGNMENT
PIN DESCRIPTION
PR-35 SOIC
Pin 1 Ground NC
Pin 2 Data NC
Pin 3 NC Data
Pin 4 -- Ground
Pin 5-8 -- NC
ORDERING INFORMATION
DS2433-Z01 PR-35 Package
DS2433S-Z01 8-Pin SO Package
DS2433S-Z01/T&R Tape & Reel Version of DS2433S-Z01
DS2433X-Z01 Flip-Chip Pkg., Tape & Reel 10k pc reel
DS2433X-ZS Flip-Chip Pkg., Tape & Reel 2.5k pc reel
DESCRIPTION
The DS2433-Z01 is identical to the standard DS2433 with the exception that the write cycle endurance
specification is relaxed to 10,000 cycles as specified in WRITE CYCLE ENDURANCE
SPECIFICATION Table 1. The device consists of a factory-lasered registration number that
DS2433-Z01
4kbit 1-Wire EEPROM
www.maxim-ic.com
DATA
GND
NC
NC
NC
2
3
4
8
7
6
5
1
8-Pin SO (208-Mil)
NC
NC
NC
123
PR-35
321
Bottom View
Flip-Chip Package
(Visit www.maxim-ic.com for flip-chip pinout and mechanical data.)
1-Wire is a registered trademark of Dallas Semiconductor.
DS2433-Z01
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includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (23h) plus 4096 bits of
user-programmable EEPROM.
The power to read and write the DS2433-Z01 is derived entirely from the 1-Wire® communication line.
The memory is organized as sixteen pages of 256 bits each. The scratchpad is an additional page that acts
as a buffer when writing to memory. Data is first written to the scratchpad where it may be read back for
verification. A copy scratchpad command will then transfer the data to memory. This process insures data
integrity when modifying the memory. The 64-bit registration number provides a guaranteed unique
identity which allows for absolute traceability and acts as node address if multiple DS2433-Z01 are
connected in parallel to form a local network. Data is transferred serially via the 1-Wire protocol, which
requires only a single data lead and a ground return. The PR-35 and SOIC packages provide a compact
enclosure that allows standard assembly equipment to handle the device easily for attachment to printed
circuit boards or wiring. Typical applications include storage of calibration constants, board
identification, and product revision status.
The DS2433X-Z01 flip-chip packaged option is built to the highest quality standards and manufactured
for long term reliability. All Dallas Semiconductor devices are made using the same quality materials and
manufacturing methods. However, standard versions of the DS2433X-Z01 are not exposed to
environmental stresses, such as burn-in, that some industrial applications require. For specific reliability
information on this product please contact Dallas Semiconductor.
WRITE CYCLE ENDURANCE SPECIFICATION Table 1
Conditions: VPUP = 5.0V; TA = 25ºC
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Write/Erase Cycles NCYCLE 10k
Please see the standard DS2433 datasheet for all other device specifications and operational information.
