M95256-R

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Education

256 Kbit SPI bus EEPROM with high-speed clock

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Tools & Software
Quality & Reliability
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Product overview

Description

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.
The M95256-DF, -DR or -DW (hereinafter referred to as M95256-Dx) offer an additional page, named the Identification page (64 bytes). The Identification page can be used to store sensitive application parameters that can be (later) permanently locked in read-only mode.
The SPI bus signals are C, D and Q, as shown in Figure 1 and Table 1. The device is selected when Chip select (S) is driven low. Communications with the device can be interrupted when the HOLD is driven low.
  • All features

    • Compatible with the serial peripheral interface (SPI) bus
    • Memory array
      • 256-Kbit (32 Kbytes) of EEPROM
      • Page size: 64 bytes
      • Additional write lockable page (Identification page)
    • Write time
      • Byte Write within 5 ms
      • Page Write within 5 ms
    • Write protect
      • quarter array
      • half array
      • 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
      • SO8N (ECOPACK2)
      • TSSOP8 (ECOPACK2)
      • UFDFPN8 (ECOPACK2)
      • WLCSP8 (ECOPACK2)

Circuit Diagram

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      ST EEPROM Finder

      Active

      Serial EEPROMs product finder for Android and iOS

      Finder Apps ST
      ST EEPROM Finder

      Description:

      Serial EEPROMs product finder for Android and iOS
    • Part number
      Status
      Description
      Type
      Supplier

      X-NUCLEO-EEPRMA2

      Active

      Standard I²C and SPI EEPROM memory expansion board based on M24xx and M95xx series for STM32 Nucleo

      STM32 Nucleo expansion boards ST
      X-NUCLEO-EEPRMA2

      Description:

      Standard I²C and SPI EEPROM memory expansion board based on M24xx and M95xx series for STM32 Nucleo

EDA Symbols, Footprints and 3D Models

STMicroelectronics - M95256-R

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M95256-RDW6TP
Active
TSSOP-8L Industrial Ecopack2
M95256-RMC6TG
Active
UFDFPN8 Industrial Ecopack2
M95256-RMN6TP
Active
SO8 Industrial Ecopack2

M95256-RDW6TP

Package:

TSSOP-8L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TSSOP-8L

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**:

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Replacement Product
Budgetary Price (US$)*/Qty
More info
min
max
M95256-RMN6TP Available at 3 distributors

Distributor availability ofM95256-RMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2287 1 Buy from Distributor
AVNET AMERICA 10000 0 Buy from Distributor
MOUSER WORLDWIDE 57 1 Buy from Distributor

Distributor reported inventory date: 2021-10-24

Distributor Name

DIGIKEY

Stock

2287

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

57

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-24

Buy Direct
Active
EAR99 NEC Tape And Reel SO8 -40 85 - 0.3342 / 1k
MORE INFO

Unit Price (US$):

0.3342

Country of Origin:

PHILIPPINES

M95256-RMC6TG No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel UFDFPN8 -40 85 - 0.404 / 1k
MORE INFO

Unit Price (US$):

0.404

Country of Origin:

PHILIPPINES

M95256-RDW6TP Available at 4 distributors

Distributor availability ofM95256-RDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4036 1 Buy from Distributor
AVNET AMERICA 4000 0 Buy from Distributor
MOUSER WORLDWIDE 3435 1 Buy from Distributor
Farnell Element14 EUROPE 1256 1 Buy from Distributor

Distributor reported inventory date: 2021-10-24

Distributor Name

DIGIKEY

Stock

4036

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

3435

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1256

Min.Order

1

Distributor reported inventory date: 2021-10-24

Buy Direct
Active
EAR99 NEC Tape And Reel TSSOP-8L -40 85 - 0.3465 / 1k
MORE INFO

Unit Price (US$):

0.3465

Country of Origin:

CHINA

M95256-RMN6TP

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3342 / 1k

Distributor availability ofM95256-RMN6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2287 1 Buy from Distributor
AVNET AMERICA 10000 0 Buy from Distributor
MOUSER WORLDWIDE 57 1 Buy from Distributor

Distributor reported inventory date: 2021-10-24

Distributor Name

DIGIKEY

Stock

2287

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

10000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

57

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO8

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.3342 / 1k

Country of Origin

PHILIPPINES

M95256-RMC6TG

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.404 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

UFDFPN8

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.404 / 1k

Country of Origin

PHILIPPINES

M95256-RDW6TP

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.3465 / 1k

Distributor availability ofM95256-RDW6TP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4036 1 Buy from Distributor
AVNET AMERICA 4000 0 Buy from Distributor
MOUSER WORLDWIDE 3435 1 Buy from Distributor
Farnell Element14 EUROPE 1256 1 Buy from Distributor

Distributor reported inventory date: 2021-10-24

Distributor Name

DIGIKEY

Stock

4036

Min.Order

1

Region

WORLDWIDE Buy from Distributor

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Buy from Distributor

MOUSER

Stock

3435

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

1256

Min.Order

1

Distributor reported inventory date: 2021-10-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSSOP-8L

Operating Temperature (°C)

(min)

-40

(max)

85

Replacement Product

-

Budgetary Price (US$)* / Qty

0.3465 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors