The M48T58Y-70MH1 is a 5.0 V, 8 K x 8 TIMEKEEPER<sup>® SRAM from STMicroelectronics, which integrates a battery-backed SRAM with a real-time clock (RTC) in a single package. This innovative product is designed to maintain precise time tracking and data storage even when the main power to the device is turned off.

With a 64 Kbit (8 Kbyte) storage capacity, the M48T58Y-70MH1 provides ample space for data that must be preserved during power loss. The RTC provides seconds, minutes, hours, day, date, month, and year information, with the accuracy and reliability expected from a leading semiconductor manufacturer. The clock operates in either 24-hour or 12-hour formats with an AM/PM indicator, catering to various user preferences and international standards.

This Timekeeper SRAM has a wide operating temperature range of -40°C to +85°C, making it suitable for a variety of challenging environments and applications. The integrated crystal ensures stable timekeeping, and the device's automatic power-fail chip deselect and write protection features safeguard the data integrity during any power transitions.

The M48T58Y-70MH1 is housed in a 28-pin, 600 mil DIP CAPHAT<sup>™ package, which includes a factory-installed SNAPHAT<sup>® top containing the battery and crystal. This unique design allows for easy battery replacement, which extends the life of the product far beyond the initial battery's lifespan.

Key features of the M48T58Y-70MH1 include:

• Integrated, ultra-low power SRAM and real-time clock
• Automatic power-down to battery mode when external supply drops below a threshold
• More than 10 years of data retention and clock functionality on battery power
• Software-controlled clock calibration for high accuracy
• Programmable alarm and interrupt function for versatile use cases

Designed for applications requiring reliable timekeeping and data retention without continuous power, the M48T58Y-70MH1 is ideal for embedded systems, utility meters, security systems, and other critical data-logging applications. STMicroelectronics' commitment to quality ensures that this Timekeeper SRAM is a dependable choice for maintaining time and data integrity.