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Manufacturer Part #


M41T11 Series 2 to 5.5 V Serial I2C Real Time Clock Surface Mount - SOH-28

ECAD Model:
Mfr. Name: STMicroelectronics
Standard Pkg:
Product Variant Information section
Date Code: 1752
Product Specification Section
Technical Attributes
Attributes Table
Date Format: YY:MM:DD
Time Format: HH:MM:SS
Interface: I2C
Non-Volatile Memory Size: 56B
Supply Voltage-Nom: 2V to 5.5V
Temperature Grade: Industrial
Operating Temp Range: -40°C to +85°C
Storage Temperature Range: -55°C to +125°C
Package Style:  SOH-28
Mounting Method: Surface Mount
Features & Applications
The M41T11MH6F is a 5.5 V supply voltage, I2C interface Real Time Clock, available in surface mount SOH-28 package.

This device has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell.


  • 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
  • Serial interface supports I2C bus (100 kHz protocol)
  • Ultra-low battery supply current of 0.8 μA (typ. at 3 V)
  • 2.0 to 5.5 V clock operating voltage
  • Automatic switchover and deselect circuitry
  • 56 bytes of general purpose RAM
  • Software clock calibration to compensate crystal deviation due to temperature
  • Automatic leap year compensation
  • Operating temperature of –40 to 85°C
  • Packaging includes a 28-lead SOIC and SNAPHAT®top
  • RoHS compliantLead-free second level interconnect
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Product Variant Information section