STMicroelectronics M48T59Y-70PCIU Timekeeper SRAM

The M48T59Y-70PCIU is a 64 Kbit (8Kb x8) Timekeeper SRAM integrated with a real-time clock, a crystal, a voltage reference, and an integrated battery. This product, designed and manufactured by STMicroelectronics, is particularly suitable for applications requiring reliable non-volatile memory storage and precise timekeeping functionalities. It is commonly used in systems that require data and parameters to be maintained without an external power supply.

This memory device operates at a voltage range of 4.5V to 5.5V and is characterized by a 70ns access time, making it an efficient choice for applications where quick data retrieval is essential. The M48T59Y-70PCIU comes in a self-contained 28-pin, 330 mil SOIC package, which is easy to integrate into various electronic assemblies.

The real-time clock (RTC) feature of the M48T59Y-70PCIU provides a full binary-coded decimal (BCD) clock calendar that is accessed by a simple multiplexed byte-wide interface. The clock/calendar functionality includes seconds, minutes, hours, day, date, month, and year data. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.

An integrated, factory-installed battery powers the RTC and maintains the SRAM data when the main supply is off. The device provides over 10 years of data retention and clock functionality on the power supply of the integrated lithium battery. Moreover, the M48T59Y-70PCIU features an automatic power-fail chip deselect and write protection, ensuring the integrity of the data during voltage drops or power loss.

With its robust design and integrated power supply, the M48T59Y-70PCIU is an excellent choice for a wide array of applications, including telecommunications, industrial control systems, and point-of-sale terminals, where long-term data retention and accurate timekeeping are critical.

Overall, the M48T59Y-70PCIU from STMicroelectronics is a reliable and versatile component that offers the dual benefits of non-volatile memory storage and precise time management in a compact and energy-efficient package.