The M48T37Y-70MH1E from STMicroelectronics is a high-performance 256 Kbit (32K x 8) Timekeeper SRAM. This integrated device combines a binary counter with a quartz crystal and a battery to maintain a full-function, real-time clock and 100-year calendar. Specifically designed to be a non-volatile memory and timekeeping solution, it operates at a voltage range of 3.0 to 3.6V and features an access time of 70ns, making it ideal for a wide range of applications where reliable timekeeping is essential.

Key Features

• Integrated, ultra-low power SRAM, real-time clock, power-fail control circuit, and battery
• Byte-wide SRAM with unlimited write cycles
• Automatically switches to battery on power failure
• Software controlled clock calibration for high accuracy
• Self-contained battery and crystal in the Timekeeper package
• 10 years of data retention and clock functionality in the absence of power
• Industrial temperature range (-40°C to +85°C)

Applications

The M48T37Y-70MH1E is versatile and can be used in a variety of applications where accurate timekeeping is critical. This includes:

• Industrial systems
• Embedded systems
• Utility meters
• Security systems
• Network servers
• Black box solutions

Package and Quality

The device is packaged in a 28-pin, 600 mil SOIC, providing a compact solution that is easy to integrate into system designs. STMicroelectronics' commitment to quality ensures that the M48T37Y-70MH1E meets the highest standards, with rigorous testing for reliability and performance across its industrial temperature range.

Conclusion

With its combination of non-volatile memory, integrated real-time clock, and a self-contained power source, the M48T37Y-70MH1E is a robust timekeeping solution that can help maintain the integrity of data and time information even in the event of a power failure. Its suitability for a wide range of applications makes it a smart choice for designers looking for a reliable timekeeping and memory solution.