STMicroelectronics MT48T35AV-10MH6TR Timekeeper SRAM

The MT48T35AV-10MH6TR is a high-performance integrated Timekeeper® SRAM module from STMicroelectronics, designed to provide a full-featured battery-backed clock and a non-volatile SRAM in a single package. This 3.3V 256K x 8 TIMEKEEPER® SRAM is a self-contained unit that maintains a full-function, real-time clock calendar and 256 Kbytes of static RAM.

This innovative product features an integrated lithium energy source and a quartz crystal, which ensures that the clock remains accurate and the memory retains data even when the main power is lost. The device operates at a speed of 10MHz, providing quick access to stored information, which is crucial for applications requiring rapid data retrieval and real-time clock functionalities.

Key Features of the MT48T35AV-10MH6TR:

• Integrated Power Source: A long-life lithium battery is included to ensure data and clock functionality is maintained for over 10 years in the absence of an external power supply.
• Real-Time Clock (RTC): The RTC provides seconds, minutes, hours, day, date, month, and year information with leap year compensation up to the year 2100.
• Memory: 256K x 8 bits of non-volatile static RAM allows for ample storage, with a simple byte-wide interface for easy integration into a variety of systems.
• Automatic Power-Fail Chip De-select and Write Protection: Writes to the SRAM are inhibited when VCC falls below a certain threshold, protecting the data integrity during power loss.
• Software Controlled Clock Calibration: For precise timekeeping, the device allows software correction of the RTC.
• Transparent Clock Operation: The clock continues to run without any user intervention, even during power cycling events.
• Surface-Mount Package: The MT48T35AV-10MH6TR is available in a 28-pin SOIC package, suitable for PCB mounting and ideal for space-constrained applications.

With its combination of non-volatile memory and integrated real-time clock, the MT48T35AV-10MH6TR is a perfect solution for systems that require reliable timekeeping and data storage without the need for additional components. It is widely used in applications such as utility meters, security systems, and industrial control systems where data integrity and accurate timekeeping are paramount.

STMicroelectronics' commitment to quality and reliability ensures that the MT48T35AV-10MH6TR meets the stringent requirements of modern electronic systems, providing designers with a dependable and efficient solution for their timekeeping and memory needs.