STMicroelectronics M48T35AV-10MH1E Timekeeper SRAM

The M48T35AV-10MH1E is a high-performance, 256 Kbit (32K x 8) Timekeeper SRAM integrated circuit from STMicroelectronics. This robust memory module is specifically designed to maintain accurate time and date information in conjunction with providing non-volatile data storage. It operates at a voltage of 3.3V and features a speed of 10MHz, making it suitable for a wide range of applications that require a reliable real-time clock (RTC) and memory backup system.

One of the key features of the M48T35AV-10MH1E is its integrated, ultra-low power SRAM and real-time clock. The clock/calendar functionality provides seconds, minutes, hours, day, date, month, and year information, with automatic adjustments for months with fewer than 31 days, including corrections for leap year. The clock operates in either 24-hour or 12-hour formats with an AM/PM indicator. A precision crystal oscillator ensures high accuracy timing over a wide temperature range and long-term reliability.

The device also includes a programmable alarm function that can be set to trigger on a specific date, day of the week, hour, minute, or second. This feature is particularly useful for scheduling system wake-up events from power-down mode. The M48T35AV-10MH1E ensures data and clock functionality are maintained by an integrated, long-life lithium battery, which automatically switches on when the main power supply is interrupted, preserving data and keeping the clock operational for over 10 years in the absence of power.

Designed with a 28-pin, 600 mil SOIC package, the M48T35AV-10MH1E is easy to integrate into various designs. It provides a simple parallel interface for easy integration with microcontrollers and other digital logic. The device also features a write protect function, which prevents accidental data alteration during low-power conditions. This makes it an ideal choice for industrial control systems, utility meters, POS terminals, and other systems requiring a dependable timekeeping and memory solution.

Overall, the M48T35AV-10MH1E from STMicroelectronics is a versatile and reliable component that combines the functionality of a real-time clock and non-volatile SRAM, ensuring data integrity and accurate timekeeping across a multitude of applications.