STMicroelectronics M48T35Y-70MH6E Timekeeper SRAM

The M48T35Y-70MH6E is a high-performance 256 Kbit (32K x 8) Timekeeper SRAM designed by STMicroelectronics. This integrated device combines a versatile 32K x 8 non-volatile static RAM with advanced timekeeping capabilities, making it an ideal solution for applications requiring memory and real-time clock functionalities such as industrial controllers, utility meters, and other embedded systems.

This Timekeeper SRAM operates at a speed of 70ns, ensuring fast data access and processing for time-critical tasks. The device features an integrated, ultra-low power SRAM, a real-time clock/calendar, and a programmable alarm and watchdog timer, all of which are powered by an onboard lithium battery. The battery ensures that timekeeping and SRAM data are maintained for over 10 years in the absence of an external power supply.

Key features of the M48T35Y-70MH6E include:

• Integrated Real-Time Clock (RTC): Tracks time with precision in hours, minutes, and seconds, and provides a calendar up to the year 2099, with leap year compensation.
• Programmable Alarm: Allows users to set an alarm that can be triggered on a specific date, day of the week, hour, minute, or second, making it highly versatile for event management within systems.
• Watchdog Timer: Enhances system reliability by allowing the device to reset itself if the system hangs or deviates from normal operation parameters.
• Automatic Power-Fail Chip Deselect and Write Protection: Writes are inhibited during power transitions, ensuring data integrity during unexpected power failures.
• Low Power Consumption: Designed for energy efficiency, the device operates on low power, extending battery life and reducing the overall power requirement of the system.
• 28-Pin Encapsulation: The device is encapsulated in a 28-pin, 330 mil SOIC package, which is suitable for surface mount technology and easy to integrate into a wide range of applications.

The M48T35Y-70MH6E is a testament to STMicroelectronics' commitment to providing innovative memory solutions with integrated timekeeping functionality. It is designed to meet the needs of complex systems that require reliable time management and memory retention, even in the absence of power.