256kb I2C CMOS Serial EEPROM
Description
EEPROM Serial 256-Kb I2C
CAT24C256
Description The CAT24C256 is a EEPROM Serial 256−Kb I2C, internally
organized as 32,768 words of 8 bits each.
It features a 64−byte page write buffer and supports the Standard
(100 kHz), Fast (400 kHz) and Fast−Plus (1 MHz) 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.
On−Chip ECC (Error Correction Code) makes the device suitable
for high reliability applications.
Features
• Supports Standard, Fast and Fast−Plus I2C Protocol • 1.
8 V to 5.
5 V Supply Voltage Range • 64−Byte Page Write Buffer • Hardware Write Protection for Entire Memory • 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 • Industrial and Extended Temperature Range • SOIC, TSSOP and UDFN 8−Pad Packages • This Device is Pb−Free, Halogen Free/BFR Free, and RoHS
Compliant
VCC
SCL A2, A1, A0
WP
CAT24C256
SDA
DATA SHEET www.
onsemi.
com
TSSOP−8 Y SUFFIX CASE 948AL
SOIC−8 W SUFFIX CASE 751BD
UDFN−8 HU4 SUFFIX CASE 517AZ
PIN CONFIGURATION
A0
1
A1
VCC WP
A2
SCL
VSS
SDA
SOIC (W, X), TSSOP (Y), UDFN (HU4)
For the location of Pin 1, please consult the corresponding package drawing.
PIN FUNCTION
Pin Name†
Function
A0, A1, A2 SDA
Device Address Serial Data
SCL
Serial Clock
WP
Write Protect
VCC
Power Supply
VSS
Ground
†The exposed pad for the UDFN packages can be left floating or connected to Ground.
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet.
VSS Figure 1.
Functional Symbol
© Semiconductor Components Industries, LLC, 2014
1
February, 2022 − Rev.
16
Publication Order Number: CAT24C256/D
CAT24C256
Table 1.
ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
Storage Temperature
–65 to +15...
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