M95256-A125

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Automotive 256 Kbit SPI bus EEPROM with high speed clock

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  • The M95256-A125 and M95256-A145 are 256-Kbit serial EEPROM Automotive grade devices operating up to 145°C. They are compliant with the very high level of reliability defined by the Automotive standard AEC-Q100 grade 0.

    The devices are accessed by a simple serial SPI compatible interface running up to 20 MHz.
    The memory array is based on advanced true EEPROM technology (Electrically Erasable PROgrammable Memory). The M95256-A125 and M95256-A145 are byte-alterable memories (32768 × 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 M95256-A125 and M95256-A145 offer 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 the Serial Peripheral Interface (SPI) bus
    • Memory array
      • 256 Kbit (32 Kbyte) of EEPROM
      • Page size: 64 byte
      • Write protection by block: 1/4, 1/2 or whole memory
      • Additional Write lockable Page (Identification page)
    • Extended temperature and voltage ranges
      • Up to 125 °C (VCCfrom 1.7 V to 5.5 V)
      • Up to 145 °C (VCCfrom 2.5 V to 5.5 V)
    • High speed clock frequency
      • 20 MHz for VCC ≥ 4.5 V
      • 10 MHz for VCC≥ 2.5 V
      • 5 MHz for VCC≥ 1.7 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
      • 400 k Write cycles at 145 °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 (ECOPACK2®)

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Temperature range (°C)
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
Order from ST
Order from Distributors
M95256-DRMN3TP/K SO8 Tape And Reel
Active
-40 to 125 EAR99 CHINA 0.6 / 1k Get sample Check Availability

Distributor availability ofM95256-DRMN3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6189 1 Order Now
ARROW EUROPE 31240 0 Order Now
ARROW AMERICA 14 1 Order Now
MOUSER WORLDWIDE 2459 1 Order Now
RUTRONIK EUROPE 22500 2500 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

DIGIKEY

Stock

6189

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

31240

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

14

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

2459

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

22500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-19

M95256-DRDW3TP/K TSSOP8 Tape And Reel
Active
-40 to 125 EAR99 CHINA 0.6 / 1k Get sample Check Availability

Distributor availability ofM95256-DRDW3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5863 1 Order Now
MOUSER WORLDWIDE 3077 1 Order Now
Farnell Element14 EUROPE 3906 1 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

DIGIKEY

Stock

5863

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3077

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3906

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-19

M95256-DRMF3TG/K WFDFPN8 Tape And Reel
Active
-40 to 125 EAR99 PHILIPPINES 0.735 / 1k Get sample Check Availability

Distributor availability ofM95256-DRMF3TG/K

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 435 1 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

MOUSER

Stock

435

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-05-19

M95256-DRMN3TP/K

Package

SO8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofM95256-DRMN3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6189 1 Order Now
ARROW EUROPE 31240 0 Order Now
ARROW AMERICA 14 1 Order Now
MOUSER WORLDWIDE 2459 1 Order Now
RUTRONIK EUROPE 22500 2500 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

DIGIKEY

Stock

6189

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

31240

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

14

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

2459

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

22500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-19

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.6 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

Country of Origin

CHINA

M95256-DRDW3TP/K

Package

TSSOP8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.6 / 1k

Distributor availability ofM95256-DRDW3TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5863 1 Order Now
MOUSER WORLDWIDE 3077 1 Order Now
Farnell Element14 EUROPE 3906 1 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

DIGIKEY

Stock

5863

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3077

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3906

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-19

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.6 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

Country of Origin

CHINA

M95256-DRMF3TG/K

Package

WFDFPN8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.735 / 1k

Distributor availability ofM95256-DRMF3TG/K

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 435 1 Order Now

Distributor reported inventory date: 2020-05-19

Distributor Name

MOUSER

Stock

435

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-05-19

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.735 / 1k

Temperature range (°C)

-40 to 125

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

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Technical Documentation

    • Description Version Size Action
      DS8896
      Automotive 256-Kbit serial SPI bus EEPROMs with high-speed clock
      8.0
      792.78 KB
      PDF
      DS8896

      Automotive 256-Kbit serial SPI bus EEPROMs with high-speed 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
      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

    • 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

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-DRDW3TP/K
Active
TSSOP8 Automotive Ecopack2
M95256-DRMF3TG/K
Active
WFDFPN8 Automotive Ecopack2
M95256-DRMN3TP/K
Active
SO8 Automotive Ecopack2

M95256-DRDW3TP/K

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

M95256-DRMF3TG/K

Package:

WFDFPN8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

WFDFPN8

Grade

Automotive

RoHS Compliance Grade

Ecopack2

M95256-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.