IC RTC CLK/CALENDAR I2C 8SOIC

M41T11M6E – I2C Real-Time Clock/Calendar IC – STMicroelectronics

The M41T11M6E from STMicroelectronics is a highly integrated real-time clock (RTC) and calendar IC designed for precision timekeeping in low-power applications. This surface-mount component delivers accurate time/date tracking with minimal current consumption, making it ideal for battery-backed systems. PCX ensures genuine STMicroelectronics inventory with reliable same-day shipping and dedicated technical support.

Key Features

• Type: Clock/Calendar with Leap Year Compensation
• Interface: I2C, 2-Wire Serial Communication
• Voltage Range: 2V–5.5V (Main), 2.5V–3.5V (Battery Backup)
• Ultra-Low Power: Only 70µA Timekeeping Current @ 2V
• Operating Temperature: -40°C to +85°C (Industrial Grade)
• Integrated Memory: 56B NVSRAM for Data Retention

Technical Details

This RTC IC provides precise timekeeping in HH:MM:SS format and calendar functionality in YY-MM-DD-dd (year-month-date-day) format. Housed in an 8-SOIC package (3.90mm width), it features automatic leap-year correction and non-volatile storage to maintain critical data during power loss. The I2C serial interface ensures easy microcontroller integration, while industrial temperature range support guarantees reliability in harsh environments.

Common Applications

• Industrial Automation Controllers
• Medical Monitoring Devices
• Smart Meters & Energy Management Systems
• POS Terminals & Kiosks
• Backup Power Supplies/UPS Units

About STMicroelectronics

STMicroelectronics is a globally recognized leader in semiconductor solutions, renowned for innovation in microelectronics and energy-efficient technologies. With over 30 years of industry presence, STM consistently delivers high-reliability components for automotive, industrial, and IoT applications.

The company maintains rigorous quality certifications (including ISO/TS 16949 and AEC-Q100) and invests heavily in R&D, ensuring products like the M41T11 series meet stringent performance and longevity standards. Their commitment to sustainable manufacturing further solidifies trust among design engineers worldwide.

About Real-Time Clock (RTC) ICs

Real-Time Clock ICs are critical for maintaining accurate time/date stamps in electronic systems during main power loss. They function as autonomous timekeeping circuits with battery backup, enabling event logging, scheduling, and wake-up functions in power-sensitive designs.

Modern RTCs like the M41T11 integrate NVSRAM to preserve user data alongside timestamps, eliminating the need for external memory. Their low operating current (<1µA in standby) makes them indispensable for portable devices, embedded systems, and infrastructure requiring years of maintenance-free operation.

Packaging

Available in Tube packaging for automated assembly processes. Contact PCX for reel options or bulk quantities.

FAQs

Q: Is the M41T11M6E compatible with 3.3V microcontrollers?
A: Yes, it operates from 2V to 5.5V, making it suitable for 3.3V and 5V systems.

Q: Does this RTC require an external crystal?
A: Yes, it needs a standard 32.768kHz tuning-fork crystal (not included).

Q: How long does the battery backup last?
A: Duration depends on battery capacity; with a 48mAh coin cell, typical backup exceeds 10 years.

Q: Is the date format programmable?
A: The YY-MM-DD-dd format is fixed, but firmware can reinterpret the binary output.

Q: Why choose an RTC with integrated NVSRAM?
A: Integrated 56B memory preserves critical data (e.g., calibration values) during outages without extra components.

Q: Can PCX provide lifecycle support for obsolete parts?
A: Absolutely. PCX specializes in long-tail semiconductor availability with guaranteed authentic components.

Note: Product image is representational. Refer to the datasheet for exact specifications.

Secure your industrial-grade timekeeping solution now! Order the M41T11M6E today for guaranteed same-day shipping and expert support from PCX.