STMicroelectronics M48T201L685TR Timekeeper SRAM

The M48T201L685TR is a state-of-the-art Timekeeper SRAM product from STMicroelectronics, designed to provide a comprehensive solution for systems requiring both volatile memory and a timekeeping function. This integrated device combines 2 Mbit (256K x 8) of static RAM with a built-in real-time clock (RTC), a crystal, and a battery. It comes in a 44-pin SOH (SOIC) package that allows for easy integration into a wide range of applications.

The real-time clock is a highly accurate timekeeping component that maintains seconds, minutes, hours, day, date, month, and year information. The clock automatically adjusts 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 sophisticated clock alarm feature is available, providing the possibility to schedule a wake-up or interrupt signal on a specific event, enhancing the functionality of the M48T201L685TR in time-sensitive applications.

The SRAM provides a convenient non-volatile storage solution with a fast access time, making it ideal for applications that require quick data retrieval and storage. The integration of the SRAM with the RTC and battery ensures data retention and accurate timekeeping even when the main power supply is lost, making it perfect for backup memory applications.

Additionally, the M48T201L685TR includes a programmable watchdog timer that can be set to a specific time interval, providing an additional layer of system reliability by performing system resets or triggering an alarm if the system becomes unresponsive or fails to perform a critical operation within a predetermined time frame.

The product operates over a wide temperature range and includes an automatic power-fail chip deselect and write-protection feature, ensuring data integrity during power transitions. This makes the M48T201L685TR ideal for a diverse array of applications, including industrial control systems, security systems, embedded computing, and other applications where reliable timekeeping and data storage are essential.

With its robust feature set and reliable performance, the STMicroelectronics M48T201L685TR Timekeeper SRAM represents a versatile and dependable choice for designers and engineers looking to incorporate both memory and real-time clock capabilities into their systems.