256 Kbit SPI bus EEPROM with high-speed clock

Download datasheet

Order from our eStore and our distributors

Buy now
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • 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

Download Download

Sample & Buy

Part Number
Replacement Product
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
More info
Order from Distributors
Order from ST
min
max
M95256-RMN6TP - SO8 Tape And Reel -40 85
Active
0.2766 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofM95256-RMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2103 1 Order Now
AVNET AMERICA 5020 0 Order Now
MOUSER WORLDWIDE 2299 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

2103

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5020

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2299

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

Buy now
M95256-RMC6TG - UFDFPN8 Tape And Reel -40 85
Active
0.339 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofM95256-RMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 3572 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3572

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

Buy now
M95256-RDW6TP - TSSOP8 Tape And Reel -40 85
Active
0.2868 1000
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofM95256-RDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6238 1 Order Now
AVNET AMERICA 44937 0 Order Now
MOUSER WORLDWIDE 5548 1 Order Now
Farnell Element14 EUROPE 7900 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

6238

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

44937

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5548

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

7900

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

Buy now

M95256-RMN6TP

Replacement Product

-

Package

SO8

Unit Price (US$)

0.2766*

Distributor availability ofM95256-RMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2103 1 Order Now
AVNET AMERICA 5020 0 Order Now
MOUSER WORLDWIDE 2299 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

2103

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5020

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2299

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

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-RMC6TG

Replacement Product

-

Package

UFDFPN8

Unit Price (US$)

0.339*

Distributor availability ofM95256-RMC6TG

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5000 1 Order Now
MOUSER WORLDWIDE 3572 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

5000

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3572

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-16

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-RDW6TP

Replacement Product

-

Package

TSSOP8

Unit Price (US$)

0.2868*

Distributor availability ofM95256-RDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6238 1 Order Now
AVNET AMERICA 44937 0 Order Now
MOUSER WORLDWIDE 5548 1 Order Now
Farnell Element14 EUROPE 7900 1 Order Now

Distributor reported inventory date: 2019-09-16

Distributor Name

DIGIKEY

Stock

6238

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

44937

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5548

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

7900

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-16

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

Recommended for you

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
      PDF
      Semiconductor solutions for healthcare applications 1.0
      665.18 KB
      PDF
      Smart grid distribution and smart meters - Energy-efficient solutions 2.0
      1.58 MB
      PDF

      Products and solutions for solar energy

      Semiconductor solutions for healthcare applications

      Smart grid distribution and smart meters - Energy-efficient solutions

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-RDW6TP
Active
TSSOP8 Industrial Ecopack2
M95256-RMC6TG
Active
UFDFPN8 Industrial Ecopack2
M95256-RMN6TP
Active
SO8 Industrial Ecopack2

M95256-RDW6TP

Package:

TSSOP8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-RMC6TG

Package:

UFDFPN8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFDFPN8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M95256-RMN6TP

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.