Microchip logo
Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
  • product video
  • product video
product primary image

24AA256

256Kb I2C compatible 2-wire Serial EEPROM

Status: In Production

Features:

  • 32K x 8 (256Kbit)
  • 64-Byte Page Write Buffer
  • Page Write Time 5 ms Max.
  • Hardware Write-Protect Pin
  • Factory Programming Available
  • Operating voltage 1.7V to 5.5V
  • Read current 400 uA, max.
  • Standby current 1 uA, max.
  • Cascadable up to Eight Devices
  • 100 kHz and 400 kHz Clock Compatible
  • Pb-Free and RoHS Compliant
View More
Overview
Documents
Development Environment
Similar Devices
RoHS Information
Buy Now

Device Overview

Summary

The Microchip Technology Inc. 24AA256 is a 256Kb (32K x 8) Serial Electrically Erasable PROM (EEPROM), capable of operation across a broad voltage range (1.7V to 5.5V). It has been developed for advanced, low-power applications such as personal communications or data acquisition. This device also has a page write capability of up to 64 bytes of data. This device is capable of both random and sequential reads up to the 256K boundary. Functional address lines allow up to eight devices on the same bus, for up to 2 Mbit address space.

Additional Features
    • Reliable EEPROM Memory
      • 32K x 8 (256Kbit)
      • 64-Byte Page Write Buffer
      • Page Write Time 5 ms Max.
      • Hardware Write-Protect Pin
      • Factory Programming Available
    • Low Power
      • Operating voltage 1.7V to 5.5V
      • Read current 400 uA, max.
      • Standby current 1 uA, max.
    • 2-Wire Serial Interface, I2C™ Compatible
      • Cascadable up to Eight Devices
      • 100 kHz and 400 kHz Clock Compatible
    • Pb-Free and RoHS Compliant
Parametrics
Name
Value
Density
256K bits (x8)
Op. Volt Range (V)
1.7 to 5.5
Max. Clock Freq.
400 kHz
Page Size (bytes)
64
Write Protect
Full Array
Temp Range (°C)
-40°C to +125°C
Endurance
1,000,000
Data Retention (Years)
200

Documents

Jump to:

Application Notes

Download All

Reference Manual

IBIS

01/29/2013
902KB

Product Line Card

Brochures

Verilog

Video

Webinars

01/27/2010
31187KB
01/27/2010
38593KB
01/27/2010
33683KB

Development Environment

  • Demo & Evaluation Boards
  • Programmers
  • Application Examples
Demo & Evaluation Boards
MPLAB Starter Kit for Memory Products
MPLAB Starter Kit for Memory Products ( DV243003 )

Designers of Serial EEPROM applications can enjoy the increased productivity, reduced time to market and rock-solid design that only a well thought out development system can provide. Microchip's MPLAB® Starter Kit for Serial Memory Products includes everything necessary to quickly develop a robust and reliable Serial EEPROM design, and greatly reduces the time required for system integration...

Learn More
Add To Cart
Serial EEPROM PIM PICtail Pack
Serial EEPROM PIM PICtail Pack ( AC243003 )

The Serial EEPROM PIM PICtail™ Modules are a series of boards designed around Microchip Serial EEPROM devices. The boards are designed to interface with the PICtail Plus connector as well as the MPLAB® Starter Kit for Serial Memory Products and the PICkit™ 2, allowing you to get started right out of the box.

Learn More
Add To Cart
Programmers
MPLAB PM3 Universal Device Programmer
MPLAB PM3 Universal Device Programmer ( DV007004 )

The MPLAB® PM3 Universal Device Programmer is easy to use and operates with a PC or as a stand-alone unit, and programs Microchip's entire line of PIC® devices as well as the latest dsPIC® DSC devices. When used standalone, data can be loaded and saved with the SD/MMC card (not included).

  • Socket: AC164364   PartNo: 24AA256 (8MN)
  • Socket: AC164365   PartNo: 24AA256 (8ST)
  • Socket: AC164366   PartNo: 24AA256 (8MS)
  • Socket: AC164369   PartNo: 24AA256 (8MF)
  • Socket: AC164370   PartNo: 24AA256 (8SM)
  • Socket: AC164344   PartNo: 24AA256 (8SN)
  • Socket: AC164344   PartNo: 24AA256 (8P)
Learn More
Add To Cart

Similar Devices

Product
Memory Size
Memory Speed
Package
Price 5K
256K
400 kHz
CSP-8, DFN-S-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOIJ-8, TDFN-8, TSSOP-8
$0.59
256K
400 kHz
PDIP-8, SOIC 150mil-8, TSSOP-8
$0.68
256K
1 MHz
DFN-S-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOIJ-8, TDFN-8, TSSOP-8
$0.59
256K
400 kHz
DFN-S-8, MSOP-8, PDIP-8, SOIC 150mil-8, SOIJ-8, TDFN-8, TSSOP-8
$0.59

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
24AA256-E/P
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
24AA256UID-I/P
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
24AA256-I/P
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
24AA256-I/SM
0.124400
0.266667
8
SOIJ
.208in
Matte Tin
e3
24AA256T-I/SM
0.124400
0.379048
8
SOIJ
.208in
Matte Tin
e3
24AA256-E/SM
0.124400
0.266667
8
SOIJ
.208in
Matte Tin
e3
24AA256T-E/SM
0.124400
0.379048
8
SOIJ
.208in
Matte Tin
e3
24AA256/SM
0.124400
0.266667
8
SOIJ
.208in
Matte Tin
e3
24AA256T/SM
0.124400
0.379048
8
SOIJ
.208in
Matte Tin
e3
24AA256T-I/SNRVE
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256-I/SNRVE
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256-E/SN
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256T-E/SN
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256T-I/SN
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256-I/SN
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256UID-I/SN
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256UIDT-I/SN
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
24AA256-E/ST
0.033000
0.090000
8
TSSOP
4.4mm
Matte Tin
e3
24AA256T-E/ST
0.033000
0.215600
8
TSSOP
4.4mm
Matte Tin
e3
24AA256UID-I/ST
0.033000
0.090000
8
TSSOP
4.4mm
Matte Tin
e3
24AA256UIDT-I/ST
0.033000
0.215600
8
TSSOP
4.4mm
Matte Tin
e3
24AA256T-I/ST
0.033000
0.215600
8
TSSOP
4.4mm
Matte Tin
e3
24AA256-I/ST
0.033000
0.090000
8
TSSOP
4.4mm
Matte Tin
e3
24AA256T-I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
24AA256-I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
24AA256T-E/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
24AA256-E/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
24AA256-I/MSRVE
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
24AA256T-I/MSRVE
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
24AA256T-E/MNY
0.014300
0.248485
8
TDFN
2x3x0.8mm
NiPdAu
e4
24AA256T-I/MNY
0.014300
0.248485
8
TDFN
2x3x0.8mm
NiPdAu
e4
24AA256T-I/CS16K
0.005000
0.200000
8
CSP
Varies
SAC
e1
24AA256T-E/MF
0.076900
0.218182
8
DFN-S
6x5x0.9mm
Matte Tin
e3
24AA256-E/MF
0.076900
0.133333
8
DFN-S
6x5x0.9mm
Matte Tin
e3
24AA256T-I/MF
0.076900
0.218182
8
DFN-S
6x5x0.9mm
Matte Tin
e3
24AA256-I/MF
0.076900
0.133333
8
DFN-S
6x5x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy