DS28EC20

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20Kb 1-Wire EEPROM

20Kb Serial EEPROM Operates from Single-Contact 1-Wire Interface

Data Sheet (Rev. 10)

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Part Details

20480 Bits of Nonvolatile (NV) EEPROM Partitioned into Eighty 256-Bit Pages
Individual 8-Page Groups of Memory Pages (Blocks) can be Permanently Write Protected or Put in OTP EPROM-Emulation Mode ("Write to 0")
Read and Write Access Highly Backward-Compatible to Legacy Devices (e.g., DS2433)
256-Bit Scratchpad with Strict Read/Write Protocols Ensures Integrity of Data Transfer
200k 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 and Filtering to Optimize Performance in the Presence of Noise
Communicates to Host at 15.4kbps or 90kbps Using 1-Wire Protocol
Low-Cost TO-92 Package
Operating Range: 4V to 5.25V, -40°C to +85°C
Operating Range: 3.135V to3.465V, 0°C to +70°C (Standard Speed only)
IEC 1000-4-2 Level 4 ESD Protection (±8kV Contact, ±15kV Air, Typical) for I/O Pin

Documentation

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

Socket Boards for Evaluating 1-Wire Devices

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Features and Benefits

Fully Compliant with DS9481R USB-to-1-Wire Adapter
Convenient On-Board Test Points
Jumper Disconnect/Connect Functionality
Meets RJ11 1-Wire Interface Standard
Include Connections for Various OTP EPROM Programming

Product Details

The DS9120 family of socket boards are RJ11-to-socket boards that provide the hardware connectivity necessary to evaluate and operate 1-Wire® products in an easy-to-use PC environment. Additionally, the socket boards can be readily used with the DS9481R USB-to1-Wire adapter to create a 1-Wire PC programmer for 1-Wire EEPROM and one-time programmable (OTP)/EPROM devices.