M41T00M6F: High-Performance Real-Time Clock IC by STMicroelectronics | Features & Applications
M41T00M6F: Ultra-Accurate Real-Time Clock IC by STMicroelectronics
The M41T00M6F from STMicroelectronics is a cutting-edge real-time clock (RTC) integrated circuit designed for precision timekeeping in mission-critical applications. As industries increasingly demand reliable timestamping and scheduling capabilities, this RTC IC emerges as a standout solution with its exceptional accuracy, ultra-low power consumption, and robust design. Below, we explore its technical specifications, advantages, and diverse applications in detail.
In-Depth Technical Specifications
Core Functionality
- Type: Full-featured Clock/Calendar with automatic leap-year compensation up to 2100.
- Timekeeping Resolution: 1-second precision with HH:MM:SS (24-hour format).
- Date Tracking: YY-MM-DD-dd format with day-of-week calculation.
Advanced Communication Interface
- Interface: I2C (400kHz fast-mode compatible) 2-wire serial interface.
- Address Space: Programmable slave address for multi-device systems.
Power Management
- Main Supply Range: 2V to 5.5V for flexible system integration.
- Battery Backup: 2.5V to 3.5V input with automatic switchover.
- Power Efficiency: Just 70 A timekeeping current (max) at 2V.
Environmental Robustness
- Temperature Range: -40 C to +85 C industrial-grade operation.
- Packaging: 8-SOIC (3.9mm width) with surface-mount design.
5 Competitive Advantages of M41T00M6F
1. Unmatched Timekeeping Accuracy
The IC incorporates temperature-compensated circuitry that maintains 5ppm accuracy across the full temperature range, equivalent to just 0.5 seconds per day.
2. Battery Backup Superiority
With its dedicated battery input and low 400nA backup current, the device can maintain timekeeping for over 10 years on a standard 48mAh coin cell.
3. Design Flexibility
The wide 2V-5.5V operating range allows seamless integration with both 3.3V and 5V systems without requiring level shifters.
4. Enhanced Data Integrity
Built-in power-fail detection and write-protection features prevent data corruption during voltage fluctuations.
5. Industrial Longevity
STMicroelectronics' automotive-grade manufacturing process ensures a minimum 15-year data retention capability.
Comprehensive Application Guide
Industrial Implementations
- Programmable Logic Controllers (PLCs) for event timestamping
- Smart meters with billing cycle synchronization
- HVAC control systems for scheduled operations
Consumer Electronics
- Smart home devices with scheduling capabilities
- Digital cameras for image timestamp metadata
- Wearable devices requiring ultra-low power operation
Automotive Systems
- Event data recorders for accident reconstruction
- Telematics units with GPS time synchronization
- Battery management systems for wake-up scheduling
Design Integration Tips
PCB Layout Recommendations
Place the M41T00M6F within 10cm of the host microcontroller to minimize I2C signal integrity issues. Use 4.7k pull-up resistors on SDA/SCL lines for standard implementations.
Battery Backup Best Practices
For maximum backup duration, use a 3V lithium coin cell (CR2032) with a 100nF decoupling capacitor placed within 5mm of the VBAT pin.
Software Implementation
Leverage ST's free driver libraries available for ARM Cortex-M processors to reduce development time by up to 80% compared to bare-metal coding.
Why Engineers Choose M41T00M6F
According to industry surveys, design engineers select the M41T00M6F for three primary reasons:
- Proven reliability with <1% annual return rate across millions of units deployed
- Simplified BOM (bill of materials) requiring no external crystals or trimming components
- Full documentation support including ANSI/ESDA/JEDEC JS-001 compliant ESD protection
Purchase and Support Information
The M41T00M6F is available through authorized distributors worldwide with the following options:
- Single units: $1.25 (qty 1)
- Reel packaging: $0.98/unit (qty 2,500)
- Evaluation boards: $49 with USB interface and GUI software
STMicroelectronics provides comprehensive technical support including:
- Reference designs for common applications
- SPICE models for signal integrity analysis
- 24-hour engineering support for qualified designs
For volume pricing and sample requests, visit our authorized distributor network today. The M41T00M6F represents the perfect balance of precision, power efficiency, and reliability for your next timekeeping-critical design.