STMicroelectronics M48T35Y-70MH6TR Timekeeper SRAM

The M48T35Y-70MH6TR is a high-performance 256 Kbit (32K x 8) Timekeeper SRAM manufactured by STMicroelectronics. This integrated battery-backed SRAM and real-time clock (RTC) is designed for a wide range of applications that require reliable data storage and precise timekeeping functionalities.

This device is particularly suitable for systems that must maintain accurate time and date information even when the main power is turned off. The M48T35Y-70MH6TR ensures data integrity with a built-in lithium battery that provides over 10 years of data retention and timekeeping in the absence of external power.

The Timekeeper SRAM operates with a supply voltage range of 3.0V to 3.6V and features a fast 70ns access time, making it an ideal choice for high-speed microprocessor systems. It comes in a 28-pin, 330 mil SOIC package that is surface-mountable, providing a compact footprint for space-constrained applications.

Key features of the M48T35Y-70MH6TR include:

• Integrated, ultra-low power SRAM and RTC
• Automatic battery switch-over and write protection to ensure data integrity during power loss
• Byte-wide SRAM interface for easy integration with 8-bit microprocessors
• Self-contained battery and crystal within the SOIC package for a simplified design
• Programmable alarm output for system wake-up or event detection
• Industrial temperature range (-40°C to +85°C) for operation in harsh environments

The RTC section of the M48T35Y-70MH6TR offers clock functions such as seconds, minutes, hours, day, date, month, and year, with corrections for leap year. The programmable alarm and interrupt functions can be used to initiate system actions without CPU intervention, enhancing system efficiency.

This Timekeeper SRAM is a reliable, long-term solution for applications such as embedded systems, utility meters, industrial controllers, and other devices where maintaining accurate time is critical. With its robust feature set and proven reliability, the M48T35Y-70MH6TR from STMicroelectronics epitomizes a trusted component for maintaining data and time in electronic systems.