STMicroelectronics M48T35AV-10MH1F Timekeeper SRAM

The M48T35AV-10MH1F is a high-performance, 256 Kbit (32K x 8) Timekeeper® SRAM designed by STMicroelectronics, which integrates a battery-backed non-volatile time-of-day clock and 100-year calendar into a versatile 44-pin SOIC (SOJ) package. This integrated, ultra-low-power SRAM and real-time clock (RTC) solution is specifically engineered to maintain data and clock functionality when system power is lost.

The device is characterized by its 4.5V to 5.5V operating voltage range, ensuring compatibility with a wide range of applications that require a reliable energy source for maintaining clock operations. With an access time of 10 ns, the M48T35AV-10MH1F offers rapid data retrieval, making it suitable for high-performance computing tasks that require both speed and precision.

One of the key features of this product is the self-contained battery, which has a minimum of 10 years of data retention and clock functionality in the absence of external power. This makes it an ideal choice for systems that cannot afford to lose time or configuration data during power outages or intermittent operation.

The integrated RTC of the M48T35AV-10MH1F provides seconds, minutes, hours, day, date, month, and year information, with automatic leap year compensation valid up to 2100. A precision oscillator and crystal are embedded within the package, ensuring long-term accuracy of the clock module.

Additional features include a programmable alarm output active in battery-backup mode, which can be used to schedule system wake-up events. The device also offers a WRITE protect function that, when enabled, prevents accidental WRITE operations to the clock registers.

Overall, the STMicroelectronics M48T35AV-10MH1F Timekeeper SRAM is a robust, reliable choice for applications requiring non-volatile memory and an embedded timekeeping function, such as embedded systems, utility meters, industrial controllers, and other critical systems where data and time must be preserved without fail.