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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 1,000

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: 30 Weeks
Minimum Order: 1,000
Multiple Of: 1,000
Quantity Web Price
1,000+ $2.42


Attributes Table
Date Format DW:DM:M:Y/Binary
Time Format HH:MM:SS:hh/Binary
Interface I2C
Non-Volatile Memory Size 7B
Supply Voltage-Nom 2.38V 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 M41T83ZMY6F is a low power serial I2C bus real-time clock (RTC) with a built-in 32.768 KHz oscillator, available in SOX-18 package.

It has 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.


  • Ultra-low battery supply current of 365 nA
  • Factory-calibrated accuracy of ±5 ppm typical 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, seconds, minutes, hours, day, date, month, year, and century
  • Automatic switchover and reset output circuitry (fixed reference)
  • 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
  • Oscillator stop detection
  • Battery or SuperCap™ backup
  • Operating temperature of –40 °C to 85 °C
  • RoHS compliance: lead-free components are compliant with the RoHS directive