256 Kbit 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®)

Circuit Diagram

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Part Number
Replacement Product
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M95256-WMN6TP - SO8 Tape And Reel -40 85
Active
0.2766 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofM95256-WMN6TP

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4158 1 Order Now
RS COMPONENTS EUROPE 4459 5 Order Now
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ARROW EUROPE 35000 0 Order Now
ARROW AMERICA 7500 2500 Order Now
P&S ASIA/PACIFIC 1400 1 Order Now
MOUSER WORLDWIDE 2162 1 Order Now

Distributor reported inventory date: 2019-09-24

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DIGIKEY

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4158

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1

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4459

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5

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EUROPE Order Now

AVNET

Stock

217540

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

35000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

7500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

1400

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

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2162

Min.Order

1

Region

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Distributor reported inventory date: 2019-09-24

Buy now
M95256-WDW6TP - TSSOP8 Tape And Reel -40 85
Active
0.2868 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofM95256-WDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2916 1 Order Now
AVNET AMERICA 8000 0 Order Now
ARROW AMERICA 6306 1 Order Now
MOUSER WORLDWIDE 3306 1 Order Now
Farnell Element14 EUROPE 3950 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

2916

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

8000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6306

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3306

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3950

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-24

Buy now

M95256-WMN6TP

Replacement Product

-

Package

SO8

Unit Price (US$)

0.2766*

Distributor availability ofM95256-WMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4158 1 Order Now
RS COMPONENTS EUROPE 4459 5 Order Now
AVNET AMERICA 217540 0 Order Now
ARROW EUROPE 35000 0 Order Now
ARROW AMERICA 7500 2500 Order Now
P&S ASIA/PACIFIC 1400 1 Order Now
MOUSER WORLDWIDE 2162 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

4158

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

4459

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

217540

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

35000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

7500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

1400

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

2162

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-24

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

PHILIPPINES

M95256-WDW6TP

Replacement Product

-

Package

TSSOP8

Unit Price (US$)

0.2868*

Distributor availability ofM95256-WDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2916 1 Order Now
AVNET AMERICA 8000 0 Order Now
ARROW AMERICA 6306 1 Order Now
MOUSER WORLDWIDE 3306 1 Order Now
Farnell Element14 EUROPE 3950 1 Order Now

Distributor reported inventory date: 2019-09-24

Distributor Name

DIGIKEY

Stock

2916

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

8000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

6306

Min.Order

1

Region

AMERICA Order Now

MOUSER

Stock

3306

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3950

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-24

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

(*) 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
      DS4712
      256-Kbit serial SPI bus EEPROM with high-speed clock
      21.0
      929.08 KB
      PDF
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      256-Kbit serial SPI bus EEPROM with high-speed clock

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      AN4653
      Cycling endurance and data retention of high density EEPROM based on CMOS F8H process
      1.0
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      Cycling endurance and data retention of high density EEPROM based on CMOS F8H process

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      How a designer can make the most of STMicroelectronics Serial EEPROMs

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      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 SPI M95xxx Standard EEPROM (-40 degC to 85 degC) 5.0
      4.92 MB
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      Verilog model I2C EEPROM M24XXX 2.0
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      Verilog model SPI EEPROM M95XXX 2.2
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      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
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      EEPROM in WLCSP July 2016 1.4
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      I2C EEPROM in DFN5 small package 1.0
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Publications and Collaterals

    • Description Version Size Action
      Serial EEPROM 1.0
      1.73 MB
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      Serial EEPROM

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      EEPROM selection guide 2.0
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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-WDW6TP
Active
TSSOP8 Industrial Ecopack2
M95256-WMN6TP
Active
SO8 Industrial Ecopack2

M95256-WDW6TP

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-WMN6TP

Package:

SO8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO8

Grade

Industrial

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.