Manufacturer Part Number
M41T81M6E
Manufacturer
STMicroelectronics
Introduction
The M41T81M6E is a real-time clock (RTC) integrated circuit.
Product Features and Performance
Clock/Calendar functionality
Alarm feature
Leap year handling
Square wave output
Watchdog timer for system resets
I2C, 2-Wire Serial interface for communication
HH:MM:SS:hh (24 hr) time format
YY-MM-DD-dd date format
Product Advantages
Low timekeeping current requirement
Wide operating temperature range
Self-contained battery and crystal in SOIC package
Key Technical Parameters
Supply voltage range from 2V to 5.5V
Battery voltage range from 2.5V to 3.5V
Maximum timekeeping current of 100µA
Operating temperature from -40°C to +85°C
Quality and Safety Features
Ensures accurate timekeeping under varying conditions
Compatibility
I2C interface compatible with many microcontrollers
Application Areas
Embedded systems
Consumer electronics
Industrial timers
Data loggers
Product Lifecycle
Obsolete
Investigate replacements or upgrades for future projects
Several Key Reasons to Choose This Product
Provides full calendar features until the year 2099
Minimal power consumption for battery-powered devices
Built-in watchdog timer to safeguard system operation
Automated leap year correction
Simple integration with most microcontroller-based systems via I2C
M41T80STMicroelectronics