CAT24C256 Datasheet, PDF (1/14 Pages) Catalyst Semiconductor – 256-Kb I2C CMOS Serial EEPROM

256-Kb I²C CMOS Serial EEPROM
CAT24C256
Features
n Supports Standard and Fast I²C Protocol
n 1.8 V to 5.5 V Supply Voltage Range
n 64-Byte Page Write Buffer
n Hardware Write Protection for entire memory
n Schmitt Triggers and Noise Suppression Filters
on I²C Bus Inputs (SCL and SDA).
n Low power CMOS technology
n 1,000,000 program/erase cycles
n 100 year data retention
n Industrial temperature range
n RoHS-compliant 8-pin PDIP and SOIC packages
Device Description
The CAT24C256 is a 256-Kb Serial CMOS EEPROM,
internally organized as 512 pages of 64 bytes each, for
a total of 32,768 bytes of 8 bits each.
It features a 64-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).
External address pins make it possible to address up to
eight CAT24C256 devices on the same bus.
For Ordering Information details, see page 13.
Pin Configuration
functional symbol
PDIP (L)
SOIC (W, X)
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
For the location of Pin 1, please consult the
corresponding package drawing.
SCL
A2, A1, A0
WP
VCC
CAT24C256
SDA
pin FUNCTIONS
A₀, A₁, A₂
SDA
SCL
WP
V_CC
V_SS
Device Address
Serial Data
Serial Clock
Write Protect
Power Supply
Ground
VSS
* Catalyst carries the I²C protocol under a license from the Philips Corporation.
© 2007 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice

Doc. No. 1104, Rev. D