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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 5,000

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: 10 Weeks
Minimum Order: 2,500
Multiple Of: 2,500
Quantity Web Price
2,500+ $1.59


Attributes Table
Date Format DW:DM:M:Y
Time Format HH:MM:SS:hh
Interface I2C / 2-Wire / Serial
SRAM Size 7b
Supply Voltage-Nom 2.7V to 5.5V
Temperature Grade Industrial
Operating Temp Range -40°C to +85°C
Storage Temperature Range -55°C to +125°C
Features and Applications

The M41T82RM6F is a part of M41T82 Series low power serial I²C real-time clocks with a built-in 32.768 kHz oscillator.

Eight bytes of the register map are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 17 bytes of the register map provide status/control of the two alarms, watchdog, 8-bit counter, and square wave functions. An additional seven bytes are made available as user SRAM. It has an Operating temperature ranges b/w -40 °C to 85 °C and available in a SO8 package.


  • Ultra-low battery supply current of 365 nA
  • Factory calibrated accuracy ±5 ppm guaranteed after 2 reflows (SOX18)
    • Much better accuracies achievable using built-in programmable analog and digital
      calibration circuits
  • 2.0 V to 5.5 V clock operating voltage
  • Counters for tenths/hundredths of seconds, minutes, hours, day, date, month, year, and century
  • Automatic switchover and reset output circuitry (fixed reference)
    • M41T83S
      VCC = 3.00 V to 5.50 V
      (2.85 V ≤ VRST ≤ 3.00 V)
    • M41T83R
      VCC = 2.70 V to 5.50 V
      (2.55 V ≤ VRST ≤ 2.70 V)
    • M41T83Z
      VCC = 2.38 V to 5.50 V
      (2.25 V ≤ VRST ≤ 2.38 V)
  • Serial interface supports I2C bus (400 kHz protocol)
  • Programmable alarm with interrupt function (valid even during battery backup mode)
  • Optional 2nd programmable alarm available
  • Square wave output defaults to 32 KHz on power-up (M41T83 only)
  • RESET (RST) output
  • Watchdog timer
  • Programmable 8-bit counter/timer
  • 7 bytes of battery-backed user SRAM
  • Battery low flag
  • Low operating current of 80 μA