M41T01M6F RTC IC – Low Power Serial RTC with Built-in Battery Switchover Circuit – ST Make – SOIC-8

The M41T01M6F RTC IC is a Low-power serial RTC is a highly efficient, low-power serial real-time clock (RTC) designed for use in applications requiring timekeeping with battery backup. Featuring a built-in power sense circuit for automatic battery switchover during power failures, this RTC ensures continuous operation of the clock even when the main power supply is lost. It supports a wide operating voltage range of 2.0V to 5.5V, making it suitable for a variety of electronics and embedded systems.

The M41T01M6F RTC IC also offers counters for seconds, minutes, hours, days, dates, months, years, and even centuries, with automatic leap year compensation. It uses a two-line serial communication bus for simple integration with microcontrollers, making it perfect for time-sensitive applications like data logging, power failure detection, and system timekeeping.

Features:

• Wide Operating Voltage Range: 2.0V to 5.5V
• Complete Timekeeping Functions: Counters for seconds, minutes, hours, day, date, month, year, and century
• Built-in Power Sense Circuit: Automatically switches to battery during power failures.
• Low Power Consumption:
  • Operating Current: 300 μA (typical)
  • Battery Supply Current: Ultra-low at 800 nA (typical)
• M41T01M6F RTC IC has Software Clock Calibration for increased accuracy
• Battery and Capacitor Backup: Supports both backup methods for power failure protection
• No load capacitors required with the built-in 32.768 kHz oscillator
• Automatic Leap Year Compensation for accurate timekeeping across years.
• Long Battery Life: Retains data for over 5 years with a small 50 mA/h 3V lithium cell.
• Operating Temperature Range: -40°C to +85°C for use in a wide range of environments.