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CAT34C02

2-Kb I²C EEPROM for DDR2 DIMM Serial Presence Detect

Features	Description	Applications

FEATURES

Supports Standard and Fast I²C Protocol
1.7 V to 5.5 V Supply Voltage Range
16-Byte Page Write Buffer
Hardware Write Protection for entire memory
Software Write Protection for lower 128 Bytes
Schmitt Triggers and Noise Suppression Filters on I²C Bus Inputs (SCL and SDA).
Low power CMOS technology
1,000,000 program/erase cycles
100 year data retention
RoHS compliant packages
Industrial temperature range

DESCRIPTION

The CAT34C02 is a 2-Kb Serial CMOS EEPROM, internally organized as 16 pages of 16 bytes each, for a total of 256 bytes of 8 bits each.

It features a 16-byte page write buffer and supports both the Standard (100 kHz) as well as Fast (400 kHz) I²C protocol.

Write operations can be inhibited by taking the WP pin High (this protects the entire memory) or by setting an internal Write Protect flag via Software command (this protects the lower half of the memory).

In addition to Permanent Software Write Protection, the CAT34C02 also features JEDEC compatible Reversible Software Write Protection for DDR2 Serial Presence Detect (SPD) applications operating over the 1.7 V to 3.6 V supply voltage range.

The CAT34C02 is fully backwards compatible with earlier DDR1 SPD applications operating over the 1.7 V to 5.5 V supply voltage range.

APPLICATIONS