DS24B33 Datasheet, PDF (1/22 Pages) Maxim Integrated Products – 4Kb 1-Wire EEPROM with 200k Write/Erase Cycles

19-5759; Rev 0; 2/11
4Kb 1-Wire EEPROM with
200k Write/Erase Cycles
General Description
The DS24B33 is a 4096-bit, 1-Wire^® EEPROM orga-
nized as 16 memory pages of 256 bits each. Data is
written to a 32-byte scratchpad, verified, and then
copied to the EEPROM memory. The DS24B33 commu-
nicates over a single-conductor 1-Wire bus. The com-
munication follows the standard 1-Wire protocol. Each
device has its own unalterable and unique 64-bit regis-
tration number that is factory programmed into the chip.
The registration number is used to address the device
in a multidrop 1-Wire net environment. The EEPROM
provides 200,000 cycles of write/erase endurance at
+25°C. The DS24B33 is software compatible to the
DS2433.
Applications
Storage of Calibration Constants
Board Identification
Storage of Product Revision Status
Typical Operating Circuit
V_CC
μC
R_PUP
IO
DS24B33
GND
Features
♦ 4096 Bits of Nonvolatile EEPROM Partitioned Into
Sixteen 256-Bit Pages
♦ Read and Write Access is Highly Backward-
Compatible to the DS2433
♦ 256-Bit Scratchpad with Strict Read/Write
Protocols Ensures Integrity of Data Transfer
♦ 200,000 Write/Erase Cycle Endurance at +25°C
♦ Unique, Factory-Programmed, 64-Bit Registration
Number Ensures Error-Free Device Selection and
Absolute Part Identity
♦ Switchpoint Hysteresis to Optimize Performance
in the Presence of Noise
♦ Communicates to Host at 15.4kbps or 125kbps
Using 1-Wire Protocol
♦ Low-Cost Through-Hole and SMD Packages
♦ Operating Range: +2.8V to +5.25V, -40°C to +85°C
♦ IEC 1000-4-2 Level 4 ESD Protection (±8kV
Contact, ±15kV Air, Typical) for IO Pin
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
DS24B33+
-40°C to +85°C TO-92
DS24B33+T&R
-40°C to +85°C TO-92
DS24B33S+
-40°C to +85°C 8 SO (208 mils)
DS24B33S+T&R
-40°C to +85°C 8 SO (208 mils)
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
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.