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  • The M41T00S is a low-power serial real-time clock (RTC) with a built-in 32.768 kHz oscillator (external crystal controlled). Eight bytes of the SRAM 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 I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte.

    The M41T00S has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button supply when a power failure occurs. The eight clock address locations contain the century, year, month, date, day, hour, minute, and second in 24-hour BCD format. Corrections for 28, 29 (leap year - valid until year 2100), 30 and 31 day months are made automatically.
    The M41T00S is supplied in an 8-pin SOIC.

    Key Features

    • 2.0 to 5.5 V clock operating voltage
    • Counters for seconds, minutes, hours, day, date, month, year, and century
    • Software clock calibration
    • Automatic switchover and deselect circuitry (fixed reference)
      • VCC= 2.7 to 5.5 V 2.5 V ≤ VPFD≤ 2.7 V
    • Serial interface supports I2C bus (400 kHz protocol)
    • Low operating current of 300 μA
    • Oscillator stop detection
    • Battery or SuperCapTMbackup
    • Operating temperature of –40 to 85 °C
    • Ultra-low battery supply current of 0.6 μA

Circuit Diagram

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STMicroelectronics - M41T00S

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
M41T00SM6F
Active
SO-8 Industrial Ecopack1

M41T00SM6F

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
More info
min
max
M41T00SM6F Available at 8 distributors

Distributor availability ofM41T00SM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2998 1 Order Now
RS COMPONENTS EUROPE 3291 1 Order Now
AVNET AMERICA 22500 0 Order Now
FUTURE WORLDWIDE 30655 1 Order Now
ARROW EUROPE 40000 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 5129 1 Order Now
Farnell Element14 EUROPE 6236 1 Order Now

Distributor reported inventory date: 2020-11-24

Distributor Name

DIGIKEY

Stock

2998

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3291

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

22500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

30655

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

40000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

5129

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6236

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-24

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SO-8 -40 85 1.223 / 1k
MORE INFO

NVRAM size (B):

-

Country of Origin:

MOROCCO

M41T00SM6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.223 / 1k

Distributor availability ofM41T00SM6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2998 1 Order Now
RS COMPONENTS EUROPE 3291 1 Order Now
AVNET AMERICA 22500 0 Order Now
FUTURE WORLDWIDE 30655 1 Order Now
ARROW EUROPE 40000 0 Order Now
ARROW AMERICA 2500 2500 Order Now
MOUSER WORLDWIDE 5129 1 Order Now
Farnell Element14 EUROPE 6236 1 Order Now

Distributor reported inventory date: 2020-11-24

Distributor Name

DIGIKEY

Stock

2998

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

3291

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

22500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

30655

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

40000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

5129

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

6236

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-24

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-8

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

1.223 / 1k

NVRAM size (B)

-

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