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  • The M41T0 real-time clock is a low power serial real-time clock with a built-in 32.768 kHz oscillator (external crystal controlled). Eight registers are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. Addresses and data are transferred serially via a two-line bidirectional bus. The built-in address register is incremented automatically after each WRITE or READ data byte.

    The M41T0 is supplied in 8-lead plastic small outline package.

    Key Features

    • Counters for seconds, minutes, hours, day, date, month, years, and century
    • 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
    • Oscillator stop detection monitors clock operation
    • Serial interface supports I2C bus (400 kHz protocol)
    • Low standby current 0.9 μA (typ at 3 V)
    • 2.0 to 5.5 V clock operating voltage
    • Special software programmable output
    • Operating temperature of –40 to 85 °C

Circuit Diagram

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Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
NVRAM size (B)
More info
Order from Distributors
Order from ST
min
max
M41T0M6F SO-8 Tape And Reel -40 85
Active
0.834 1000 -
MORE INFO

ECCN (US):

EAR99

Country of Origin:

MOROCCO

Check Availability

Distributor availability ofM41T0M6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15445 1 Order Now
RS COMPONENTS EUROPE 7475 5 Order Now
AVNET AMERICA 5021 0 Order Now
Newark Element14 AMERICA 56 0 Order Now
MOUSER WORLDWIDE 8272 1 Order Now
Farnell Element14 EUROPE 3368 1 Order Now

Distributor reported inventory date: 2019-06-19

Distributor Name

DIGIKEY

Stock

15445

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7475

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5021

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

56

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

8272

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3368

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-19

Get sample

M41T0M6F

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.834*

Distributor availability ofM41T0M6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 15445 1 Order Now
RS COMPONENTS EUROPE 7475 5 Order Now
AVNET AMERICA 5021 0 Order Now
Newark Element14 AMERICA 56 0 Order Now
MOUSER WORLDWIDE 8272 1 Order Now
Farnell Element14 EUROPE 3368 1 Order Now

Distributor reported inventory date: 2019-06-19

Distributor Name

DIGIKEY

Stock

15445

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

7475

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5021

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

56

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

8272

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3368

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-19

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.834

Quantity

1000

NVRAM size (B)

-

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 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
      DS2949
      Serial real-time clock
      7.1
      304.76 KB
      PDF
      DS2949

      Serial real-time clock

    • Description Version Size Action
      AN3060
      Applications guide for serial real-time clocks (RTCs)
      3.0
      878.56 KB
      PDF
      AN1011
      Battery technology used in NVRAM and real-time clock (RTC) products from ST
      4.0
      248.17 KB
      PDF
      AN934
      How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products
      4.1
      123.42 KB
      PDF
      AN4641
      Integrating TIMEKEEPER® and real-time clock supervisor functions
      1.0
      479.28 KB
      PDF
      AN923
      Managing century information using serial real-time clocks and TIMEKEEPER® NVRAMs
      4.0
      142.23 KB
      PDF
      AN1572
      Power-down time-stamp function in serial real-time clocks (RTCs)
      2.0
      171.31 KB
      PDF
      AN1336
      Power-fail comparator for NVRAM supervisory devices
      2.0
      127.81 KB
      PDF
      AN3060

      Applications guide for serial real-time clocks (RTCs)

      AN1011

      Battery technology used in NVRAM and real-time clock (RTC) products from ST

      AN934

      How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products

      AN4641

      Integrating TIMEKEEPER® and real-time clock supervisor functions

      AN923

      Managing century information using serial real-time clocks and TIMEKEEPER® NVRAMs

      AN1572

      Power-down time-stamp function in serial real-time clocks (RTCs)

      AN1336

      Power-fail comparator for NVRAM supervisory devices

Publications and Collaterals

    • Description Version Size Action
      Serial real-time clock ICs 1.0
      827.11 KB
      PDF

      Serial real-time clock ICs

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M41T0M6F
Active
SO-8 Industrial Ecopack1

M41T0M6F

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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.