STMicroelectronics

M41T93ZQA6F

M41T93ZQA6F Description

The M41T93ZQA6F from STMicroelectronics is a high-performance SPI-interface real-time clock (RTC) with integrated clock/calendar functionality, designed for precision timekeeping in embedded systems. Operating within a 2.38V to 5.5V supply range, it ensures reliable performance across a wide voltage spectrum, making it suitable for battery-backed and low-power applications. The device includes 7 bytes of SRAM for data storage and supports a 24-hour time format (HH:MM:SS:hh) with leap year compensation. Its 10µA max timekeeping current at 5.5V enhances energy efficiency, while the 1.8V to 5.5V battery backup range ensures uninterrupted operation during power loss.

M41T93ZQA6F Features

• SPI Interface: Enables fast, reliable communication with microcontrollers.
• Low Power Consumption: 10µA max timekeeping current extends battery life.
• Integrated SRAM: 7B of non-volatile storage for critical data.
• Advanced Functions: Includes alarm, square wave output, watchdog timer, and leap year correction.
• Wide Voltage Range: Operates from 2.38V to 5.5V (main supply) and 1.8V to 5.5V (battery backup).
• Robust Packaging: 16-QFN surface-mount package (Tape & Reel) ensures compact PCB integration.
• High Reliability: ROHS3 compliant, REACH unaffected, and MSL 1 (Unlimited) moisture sensitivity.

M41T93ZQA6F Applications

• Industrial Automation: Ideal for timestamping events in PLCs and control systems.
• Consumer Electronics: Used in smart appliances, wearables, and IoT devices requiring precise timing.
• Medical Devices: Ensures accurate timekeeping in portable health monitors.
• Automotive Systems: Suitable for infotainment and telematics where battery backup is critical.
• Energy Metering: Provides tamper-proof timestamps for billing and logging.

Conclusion of M41T93ZQA6F

The M41T93ZQA6F stands out as a versatile, low-power RTC solution with SPI connectivity, advanced features like alarms and watchdog timers, and robust performance across industrial and consumer applications. Its wide voltage compatibility and battery backup support make it a superior choice for systems demanding reliability and precision. Whether for IoT edge devices or mission-critical industrial systems, this RTC delivers unmatched functionality in a compact, surface-mount package.