DS28CZ04

4Kb I²C/SMBus EEPROM with Nonvolatile PIO

Multifunction, Integrated Features Reduce Component Count, Save Board Space, and Lower Overall System Cost

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Overview

4Kb (512 x 8) EEPROM Organized in Two 256-Byte Blocks
Single Byte and up to 16-Byte EEPROM Write Sequences
Write-Protect Control Pin for the Entire EEPROM Array
Endurance 200k Cycles per Block at 25°C; 10ms max EEPROM Write Cycle
4 PIO Lines
Each PIO is Configured to Input or Output Mode on Startup by Stored Value
All PIOs are Reconfigurable after Startup
Serial Interface User-Programmable for I²C Bus and SMBus Compatibility
Supports 100kHz and 400kHz I²C Communication Speeds
Operating Range: 2.0V to 5.25V, -40°C to +85°C
4mm x 4mm 12-Pin TQFN Package

The DS28CZ04 combines 4Kb (512 x 8) EEPROM with 4 PIO lines. Communication with the device is accomplished with an industry standard I²C and SMBus™ interface. The memory is organized as two segments of 256 bytes with single byte and up to 16-byte block write capability. Individual PIO lines may be configured as inputs or outputs. The power-on state of PIO programmed as outputs is stored in nonvolatile memory. All PIO may be reconfigured by the user through the serial interface.

Applications