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  • The M24256 is a 256-Kbit I2C-compatible EEPROM (electrically erasable programmable memory) organized as 32 K × 8 bits.

    The M24256-BW can operate with a supply voltage from 2.5 V to 5.5 V, the M24256-BR AND M24256-DR can operate with a supply voltage from 1.8 V to 5.5 V, and the M24256-BF and M24256-DF can operate with a supply voltage from 1.7 V to 5.5 V. All these devices operate with a clock frequency of 1 MHz (or less), over an ambient temperature range of –40 °C / +85 °C. The M24256-D offers an additional page, named the identification page (64 byte). The identification page can be used to store sensitive application parameters which can be (later) permanently locked in read-only mode.

    Key Features

    • Packages
      • Compatible with following I2C bus modes:
        • 1 MHz
        • 400 kHz
        • 100 kHz
      • Memory array:
        • 256 Kbit (32 Kbyte) of EEPROM
        • Page size: 64 byte
        • Additional write lockable page (M24256-D order codes)
      • Single supply voltage and high speed:
        • 1 MHz clock from 1.7 V to 5.5 V
      • Write:
        • Byte write within 5 ms
        • Page write within 5 ms
      • Operating temperature range:
        • from -40 °C up to +85 °C
      • Random and sequential read modes
      • Write protect of the whole memory array
      • Enhanced ESD/latch-Up protection
      • More than 4 million write cycles
      • More than 200-years data retention
      • RoHS-compliant and Halogen-free (ECOPACK2)
      • SO8 ECOPACK2
      • TSSOP8 ECOPACK2
      • UFDFPN8 ECOPACK2
      • WLCSP ECOPACK2
      • Unsawn wafer (each die is tested)

Recommended for you

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      X-NUCLEO-EEPRMA2

      Active

      Standard I²C and SPI EEPROM memory expansion board based on M24xx and M95xx series for STM32 Nucleo

      STM32 Nucleo expansion boards ST
      X-NUCLEO-EEPRMA2

      Description:

      Standard I²C and SPI EEPROM memory expansion board based on M24xx and M95xx series for STM32 Nucleo
    • Part number
      Status
      Description
      Type
      Supplier

      ST EEPROM Finder

      Active

      Serial EEPROMs product finder for Android and iOS

      Finders Apps ST
      ST EEPROM Finder

      Description:

      Serial EEPROMs product finder for Android and iOS

EDA Symbols, Footprints and 3D Models

STMicroelectronics - M24256-BF

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M24256-BFDW6TP
Active
TSSOP8 Industrial Ecopack2
M24256-BFMC6TG
Active
UFDFPN8 Industrial Ecopack2
M24256BFKW20I/90
Active
WAFER Industrial N/A

M24256-BFDW6TP

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M24256-BFMC6TG

Package:

UFDFPN8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFDFPN8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M24256BFKW20I/90

Package:

WAFER

Material Declaration**:

PDF XML

Marketing Status

Active

Package

WAFER

Grade

Industrial

RoHS Compliance Grade

N/A

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Replacement Product
Budgetary Price (US$)*/Qty
More info
min
max
M24256BFKW20I/90 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Not Applicable WAFER -40 85 - 0.2127 / 1k
MORE INFO

Unit Price (US$):

0.2127

Country of Origin:

FRANCE

M24256-BFMC6TG Available at 4 distributors

Distributor availability ofM24256-BFMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1827 1 Order Now
RS COMPONENTS EUROPE 19475 1 Order Now
MOUSER WORLDWIDE 17096 1 Order Now
Farnell Element14 EUROPE 4800 1 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

DIGIKEY

Stock

1827

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

19475

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

17096

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4800

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-03

Buy Direct
Active
EAR99 NEC Tape And Reel UFDFPN8 -40 85 - 0.2621 / 1k
MORE INFO

Unit Price (US$):

0.2621

Country of Origin:

PHILIPPINES

M24256-BFDW6TP Available at 5 distributors

Distributor availability ofM24256-BFDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4191 1 Order Now
RS COMPONENTS EUROPE 3025 1 Order Now
Newark Element14 AMERICA 2211 0 Order Now
ARROW AMERICA 48000 4000 Order Now
MOUSER WORLDWIDE 4162 1 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

DIGIKEY

Stock

4191

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3025

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

2211

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

48000

Min.Order

4000

Region

AMERICA Order Now

MOUSER

Stock

4162

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-03

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel TSSOP8 -40 85 - 0.2274 / 1k
MORE INFO

Unit Price (US$):

0.2274

Country of Origin:

CHINA

M24256BFKW20I/90

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2127 / 1k

ECCN (EU)

NEC

Packing Type

Not Applicable

Package

WAFER

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.2127 / 1k

Country of Origin

FRANCE

M24256-BFMC6TG

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2621 / 1k

Distributor availability ofM24256-BFMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1827 1 Order Now
RS COMPONENTS EUROPE 19475 1 Order Now
MOUSER WORLDWIDE 17096 1 Order Now
Farnell Element14 EUROPE 4800 1 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

DIGIKEY

Stock

1827

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

19475

Min.Order

1

Region

EUROPE Order Now

MOUSER

Stock

17096

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4800

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-12-03

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

UFDFPN8

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.2621 / 1k

Country of Origin

PHILIPPINES

M24256-BFDW6TP

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.2274 / 1k

Distributor availability ofM24256-BFDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4191 1 Order Now
RS COMPONENTS EUROPE 3025 1 Order Now
Newark Element14 AMERICA 2211 0 Order Now
ARROW AMERICA 48000 4000 Order Now
MOUSER WORLDWIDE 4162 1 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

DIGIKEY

Stock

4191

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3025

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

2211

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

48000

Min.Order

4000

Region

AMERICA Order Now

MOUSER

Stock

4162

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-12-03

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSSOP8

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.2274 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors