256-Kbit serial SPI bus EEPROM with high speed clock

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  • The M95256 devices are Electrically Erasable PROgrammable Memories (EEPROMs) organized as 32768 x 8 bits, accessed through the SPI bus.

    The M95256-W can operate with a supply voltage from 2.5 V to 5.5 V, the M95256-R can operate with a supply voltage from 1.8 V to 5.5 V and the M95256-DF can operate with a supply voltage from 1.7 V to 5.5 V, over an ambient temperature range of -40 °C / +85 °C.

    Key Features

    • Compatible with the Serial Peripheral Interface (SPI) bus
    • Memory array
      • 256 Kb (32 Kbytes) of EEPROM
      • Page size: 64 bytes
    • Write
      • Byte Write within 5 ms
      • Page Write within 5 ms
    • Additional Write lockable page (Identification page)
    • Write Protect: quarter, half or whole memory array
    • High-speed clock: 20 MHz
    • Single supply voltage:
      • 2.5 V to 5.5 V for M95256-W
      • 1.8 V to 5.5 V for M95256-R
      • 1.7 V to 5.5 V for M95256-DF
    • Operating temperature range: from -40 °C up to +85 °C
    • Enhanced ESD protection
    • More than 4 million Write cycles
    • More than 200-year data retention
    • Packages:
      • SO8 (ECOPACK2®)
      • TSSOP8 (ECOPACK2®)
      • UFDFPN8 (ECOPACK2®)
      • WLCSP (ECOPACK2®)

Sample & Buy

Part Number
Replacement Product
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
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M95256-DFCS6TP/K - WLCSP Tape And Reel -40 85
Active
0.5306 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

SINGAPORE

Check Availability

Distributor availability ofM95256-DFCS6TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1495 1 Order Now
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

1495

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2019-11-05

Get sample
M95256-DFMC6TG - UFDFPN8 Tape And Reel -40 85
Active
0.339 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofM95256-DFMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4133 1 Order Now
P&S ASIA/PACIFIC 375 1 Order Now
MOUSER WORLDWIDE 5128 1 Order Now
Farnell Element14 EUROPE 2383 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

4133

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

375

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

5128

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2383

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-05

Get sample
M95256-DFMN6TP - SO8 Tape And Reel -40 85
Active
0.2766 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofM95256-DFMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1661 1 Order Now
AVNET AMERICA 5000 0 Order Now
MOUSER WORLDWIDE 1944 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

1661

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1944

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-05

Get sample
M95256-DFDW6TP - TSSOP8 Tape And Reel -40 85
Active
0.2868 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofM95256-DFDW6TP

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 164 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

MOUSER

Stock

164

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-05

Get sample
M95256DFKW20I/90 - WAFER Not Applicable -40 85
Active
- -
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

No availability of distributors reported, please contact our sales office

M95256-DFCS6TP/K

Replacement Product

-

Package

WLCSP

Unit Price (US$)

0.5306*

Distributor availability ofM95256-DFCS6TP/K

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1495 1 Order Now
AVNET AMERICA 5000 0 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

1495

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2019-11-05

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.5306

Quantity

1000

ECCN (US)

EAR99

Country of Origin

SINGAPORE

M95256-DFMC6TG

Replacement Product

-

Package

UFDFPN8

Unit Price (US$)

0.339*

Distributor availability ofM95256-DFMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4133 1 Order Now
P&S ASIA/PACIFIC 375 1 Order Now
MOUSER WORLDWIDE 5128 1 Order Now
Farnell Element14 EUROPE 2383 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

4133

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

375

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

5128

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2383

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-05

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.339

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

M95256-DFMN6TP

Replacement Product

-

Package

SO8

Unit Price (US$)

0.2766*

Distributor availability ofM95256-DFMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1661 1 Order Now
AVNET AMERICA 5000 0 Order Now
MOUSER WORLDWIDE 1944 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

DIGIKEY

Stock

1661

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1944

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-05

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.2766

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

M95256-DFDW6TP

Replacement Product

-

Package

TSSOP8

Unit Price (US$)

0.2868*

Distributor availability ofM95256-DFDW6TP

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 164 1 Order Now

Distributor reported inventory date: 2019-11-05

Distributor Name

MOUSER

Stock

164

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-05

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.2868

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

M95256DFKW20I/90

Replacement Product

-

Package

WAFER

Unit Price (US$)

*

Packing Type

Not Applicable

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

(*) 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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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS4712
      256-Kbit serial SPI bus EEPROM with high-speed clock
      21.0
      929.08 KB
      PDF
      DS4712

      256-Kbit serial SPI bus EEPROM with high-speed clock

    • Description Version Size Action
      AN4653
      Cycling endurance and data retention of high density EEPROM based on CMOS F8H process
      1.0
      267.34 KB
      PDF
      AN2014
      How a designer can make the most of STMicroelectronics Serial EEPROMs
      10.1
      1.13 MB
      PDF
      AN4653

      Cycling endurance and data retention of high density EEPROM based on CMOS F8H process

      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
      TN0991
      Description of WLCSP for STMicroelectronics EEPROMs and recommendations for use
      2.2
      721.8 KB
      PDF
      TN1171

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

      TN0991

      Description of WLCSP for STMicroelectronics EEPROMs and recommendations for use

    • Description Version Size Action
      ES0371
      M95256-R and M95256-DF package mechanical data modifications
      1.0
      230.55 KB
      PDF
      ES0371

      M95256-R and M95256-DF package mechanical data modifications

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      IBIS model SPI M95xxx Standard EEPROM (-40 degC to 85 degC) 5.0
      4.92 MB
      ZIP
      Verilog model I2C EEPROM M24XXX 2.0
      18.97 KB
      ZIP
      Verilog model SPI EEPROM M95XXX 2.2
      57.49 KB
      ZIP

      IBIS model SPI M95xxx Standard EEPROM (-40 degC to 85 degC)

      Verilog model I2C EEPROM M24XXX

      Verilog model SPI EEPROM M95XXX

Presentations & Training Material

    • Description Version Size Action
      EEPROM general presentation 1.0
      627.51 KB
      PDF
      EEPROM in WLCSP July 2016 1.4
      281.42 KB
      PDF
      I2C EEPROM in DFN5 small package 1.0
      555.19 KB
      PDF

      EEPROM general presentation

      EEPROM in WLCSP July 2016

      I2C EEPROM in DFN5 small package

Publications and Collaterals

    • Description Version Size Action
      Serial EEPROM 1.0
      1.73 MB
      PDF

      Serial EEPROM

    • Description Version Size Action
      EEPROM selection guide 2.0
      843.56 KB
      PDF

      EEPROM selection guide

    • Description Version Size Action
      Products and solutions for solar energy 1.0
      1.29 MB
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      Semiconductor solutions for healthcare applications 1.0
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      Smart grid distribution and smart meters - Energy-efficient solutions 2.0
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      Smart grid distribution and smart meters - Energy-efficient solutions

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-DFCS6TP/K
Active
WLCSP Industrial Ecopack2
M95256-DFDW6TP
Active
TSSOP8 Industrial Ecopack2
M95256-DFMC6TG
Active
UFDFPN8 Industrial Ecopack2
M95256-DFMN6TP
Active
SO8 Industrial Ecopack2
M95256DFKW20I/90
Active
WAFER Industrial N/A

M95256-DFCS6TP/K

Package:

WLCSP

Material Declaration**:

PDF XML

Marketing Status

Active

Package

WLCSP

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-DFDW6TP

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-DFMC6TG

Package:

UFDFPN8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFDFPN8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-DFMN6TP

Package:

SO8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256DFKW20I/90

Package:

WAFER

Material Declaration**:

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.