M24256-A125

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Automotive 256 Kbit serial I2C bus EEPROM

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  • The M24256-A125 is a 256-Kbit serial EEPROM Automotive grade device operating up to 125 °C. The M24256-A125 is compliant with the very high level of reliability defined by the Automotive standard AEC-Q100 grade 1.

    The device is accessed by a simple serial I2C compatible interface running up to 1 MHz.
    The memory array is based on advanced true EEPROM technology (Electrically Erasable PROgrammable Memory). The M24256-A125 is a byte-alterable memory (32 K × 8 bits) organized as 512 pages of 64 byte in which the data integrity is significantly improved with an embedded Error Correction Code logic.
    The M24256-A125 offers an additional Identification Page (64 byte) in which the ST device identification can be read. This page can also be used to store sensitive application parameters which can be later permanently locked in read-only mode.

    Key Features

    • Compatible with all 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 (Identification page)
    • Extended temperature and voltage ranges
      • -40 °C to 125 °C; 1.7 V to 5.5 V
    • Schmitt trigger inputs for noise filtering.
    • Short Write cycle time
      • Byte Write within 4 ms
      • Page Write within 4 ms
    • Write cycle endurance
      • 4 million Write cycles at 25 °C
      • 1.2 million Write cycles at 85 °C
      • 600 k Write cycles at 125 °C
    • Data retention
      • 50 years at 125 °C
      • 100 years at 25 °C
    • ESD protection (Human Body Model)
      • 4000 V
    • Packages
      • RoHS compliant and halogen-free (ECOPACK)

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Mobile Applications

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Technical Documentation

    • Description Version Size Action
      DS9202
      Automotive 256-Kbit serial I²C bus EEPROM with 1 MHz clock
      5.0
      619.6 KB
      PDF
      DS9202

      Automotive 256-Kbit serial I²C bus EEPROM with 1 MHz clock

    • Description Version Size Action
      AN4434
      CMOS F8H automotive EEPROM cycling endurance and data retention
      4.0
      367.97 KB
      PDF
      AN2440
      Embedded ECC in F8H process automotive EEPROM: device architecture and related application guidelines
      5.0
      356.4 KB
      PDF
      AN2014
      How a designer can make the most of STMicroelectronics Serial EEPROMs
      10.1
      1.13 MB
      PDF
      AN971
      I2C communication between ST7 and M24CXX EEPROM
      1.7
      64.48 KB
      PDF
      AN1471
      What happens to the M24xxx I²C EEPROM if the I²C bus communication is stopped?
      4.4
      72.36 KB
      PDF
      AN4434

      CMOS F8H automotive EEPROM cycling endurance and data retention

      AN2440

      Embedded ECC in F8H process automotive EEPROM: device architecture and related application guidelines

      AN2014

      How a designer can make the most of STMicroelectronics Serial EEPROMs

      AN971

      I2C communication between ST7 and M24CXX EEPROM

      AN1471

      What happens to the M24xxx I²C EEPROM if the I²C bus communication is stopped?

    • Description Version Size Action
      TN1171
      Description of UFDFPN5, UFDFPN8 and WFDFPN8 for STMicroelectronics EEPROMs and recommendations for use
      3.0
      574.55 KB
      PDF
      TN1171

      Description of UFDFPN5, UFDFPN8 and WFDFPN8 for STMicroelectronics EEPROMs and recommendations for use

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      3D_MODEL_EEPROM_ALL_PACKAGES 1.0
      160.28 KB
      ZIP
      IBIS model I2C M24xxx Automotive EEPROM (-40 degC to 125 degC) 5.0
      1.82 MB
      ZIP
      IBIS model SPI M95xxx Automotive EEPROM (-40 degC to 145 degC) 5.0
      2.76 MB
      ZIP
      Verilog model I2C EEPROM M24XXX 2.0
      18.97 KB
      ZIP
      Verilog model SPI EEPROM M95XXX 2.2
      57.49 KB
      ZIP

      3D_MODEL_EEPROM_ALL_PACKAGES

      IBIS model I2C M24xxx Automotive EEPROM (-40 degC to 125 degC)

      IBIS model SPI M95xxx Automotive EEPROM (-40 degC to 145 degC)

      Verilog model I2C EEPROM M24XXX

      Verilog model SPI EEPROM M95XXX

Presentations & Training Material

    • Description Version Size Action
      EEPROM Advanced Automotive products 1.0
      671.53 KB
      PDF

      EEPROM Advanced Automotive products

Publications and Collaterals

    • Description Version Size Action
      EEPROM Advanced Automotive selection guide 1.0
      709.5 KB
      PDF

      EEPROM Advanced Automotive selection guide

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M24256-DRDW3TP/K
Active
TSSOP8 Automotive Ecopack2
M24256-DRMF3TG/K
Active
WFDFPN8 Automotive Ecopack2
M24256-DRMN3TP/K
Active
SO8 Automotive Ecopack2

M24256-DRDW3TP/K

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

M24256-DRMF3TG/K

Package:

WFDFPN8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

WFDFPN8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

M24256-DRMN3TP/K

Package:

SO8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) 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
Package
Packing Type
Marketing Status
Temperature range (°C)
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
M24256-DRMF3TG/K Available at 3 distributors

Distributor availability ofM24256-DRMF3TG/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1840 1 Order Now
MOUSER WORLDWIDE 1717 1 Order Now
Farnell Element14 EUROPE 829 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

1840

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1717

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

829

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Get sample WFDFPN8 Tape And Reel
Active
-40 to 125 EAR99 PHILIPPINES 0.456 / 1k
M24256-DRDW3TP/K Available at 3 distributors

Distributor availability ofM24256-DRDW3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8144 1 Order Now
MOUSER WORLDWIDE 2368 1 Order Now
Farnell Element14 EUROPE 3984 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

8144

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2368

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3984

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Get sample TSSOP8 Tape And Reel
Active
-40 to 125 EAR99 CHINA 0.408 / 1k
M24256-DRMN3TP/K Available at 4 distributors

Distributor availability ofM24256-DRMN3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3083 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3617 1 Order Now
Farnell Element14 EUROPE 2209 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

3083

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3617

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2209

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Get sample SO8 Tape And Reel
Active
-40 to 125 EAR99 CHINA 0.408 / 1k

M24256-DRMF3TG/K

Package

WFDFPN8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.456 / 1k

Distributor availability ofM24256-DRMF3TG/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1840 1 Order Now
MOUSER WORLDWIDE 1717 1 Order Now
Farnell Element14 EUROPE 829 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

1840

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1717

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

829

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.456 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

M24256-DRDW3TP/K

Package

TSSOP8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.408 / 1k

Distributor availability ofM24256-DRDW3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 8144 1 Order Now
MOUSER WORLDWIDE 2368 1 Order Now
Farnell Element14 EUROPE 3984 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

8144

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2368

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3984

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.408 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

Country of Origin

CHINA

M24256-DRMN3TP/K

Package

SO8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.408 / 1k

Distributor availability ofM24256-DRMN3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3083 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 3617 1 Order Now
Farnell Element14 EUROPE 2209 1 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

3083

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3617

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2209

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.408 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

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