STMicroelectronics M48Z35Y-70MH1F Timekeeper SRAM

The M48Z35Y-70MH1F is a 256 Kbit (32K x 8) Timekeeper SRAM designed by STMicroelectronics, one of the industry leaders in semiconductor solutions. This integrated battery-backed SRAM and real-time clock (RTC) device is engineered to provide a full-featured, byte-addressable SRAM, with an integrated quartz crystal and lithium battery. It is specifically tailored for applications that require data and timekeeping to be preserved across power-loss events.

Operating at a speed of 70ns, the M48Z35Y-70MH1F ensures quick data access, making it suitable for a wide range of applications, including industrial control systems, metering, point-of-sale terminals, and medical devices, where reliable data storage and precise timekeeping are paramount.

One of the key features of this device is its self-contained battery, which maintains the time and data for a minimum of 10 years in the absence of external power. This makes the M48Z35Y-70MH1F an ideal solution for systems that cannot afford to lose data or require accurate timekeeping, even during power outages or when they are disconnected from power sources.

The module is housed in a 28-pin, 600 mil SOIC package, providing a compact form factor that is suitable for space-constrained applications. It is designed with a standard JEDEC footprint, which makes it easy to integrate into existing designs without the need for significant board modifications.

The real-time clock in the M48Z35Y-70MH1F provides seconds, minutes, hours, day, date, month, and year information, along with the century byte. The clock operates in either 24-hour or 12-hour format with an AM/PM indicator. Additionally, the device features a programmable alarm and interrupt function, which can be used to prompt specific actions or to initiate wake-up signals when necessary.

For security and convenience, the M48Z35Y-70MH1F includes a precision power-on reset circuit, which ensures that the SRAM and RTC logic are fully operational before the power supply reaches an unsafe level. This feature enhances the reliability of the system during power-up sequences.

In summary, the M48Z35Y-70MH1F from STMicroelectronics is a robust, reliable, and feature-rich timekeeper SRAM that provides a secure and convenient way to maintain critical data and accurate time across various applications.