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®)

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Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Temperature range (°C)
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
M95256-DWDW4TP/K TSSOP8 Tape And Reel
Active
0.78 -40 to 145 1000 EAR99 CHINA Check Availability

Distributor availability ofM95256-DWDW4TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1015 1 Order Now
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 1262 1 Order Now

Distributor reported inventory date: 2019-09-19

Distributor Name

DIGIKEY

Stock

1015

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

4000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1262

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-19

Get sample

M95256-DWDW4TP/K

Package

TSSOP8

Packing Type

Tape And Reel

Unit Price (US$)

0.78*

Distributor availability ofM95256-DWDW4TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1015 1 Order Now
ARROW EUROPE 4000 0 Order Now
MOUSER WORLDWIDE 1262 1 Order Now

Distributor reported inventory date: 2019-09-19

Distributor Name

DIGIKEY

Stock

1015

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

4000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1262

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-19

Marketing Status

Active

Unit Price (US$)

0.78

Temperature range (°C)

-40 to 145

Quantity

1000

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

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Product included in our Longevity Program.

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Technical Documentation

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

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

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      AN4434
      CMOS F8H automotive EEPROM cycling endurance and data retention
      4.0
      367.97 KB
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      AN2440
      Embedded ECC in F8H process automotive EEPROM: device architecture and related application guidelines
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      CMOS F8H automotive EEPROM cycling endurance and data retention

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      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
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HW Model, CAD Libraries & SVD

    • Description Version Size Action
      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
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      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

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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
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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-DWDW4TP/K
Active
TSSOP8 Automotive Ecopack2

M95256-DWDW4TP/K

Package:

TSSOP8

Material Declaration**:

PDF

Marketing Status

Active

Package

TSSOP8

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.