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M41T0M6F

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Serial real-time clock (RTC)

Quantity $ per Unit Savings
1 - 9$2.900%
10 - 24$2.6110%
25 - 99$2.4715%
100 - 220$2.1426%
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Parameter NameParameter Value
Operating RangeIndustrial
Supply Voltage Min Volt2.0
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack3
GradeIndustrial
Package NameSO-8

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