The M48T37Y-70MH6E is a 3.3 V, 256 Kbit (32 K x 8) Timekeeper<sup>® SRAM designed by STMicroelectronics. This integrated device combines a high-performance CMOS static RAM with an integrated timekeeping function. It is specifically engineered to maintain precise time and date information, as well as to provide a non-volatile storage solution in a single package.

Key Features

• Integrated Power-Supply: Features a built-in power-fail de-select circuit that monitors the VCC for an out-of-tolerance condition. When such a condition occurs, the circuit automatically switches to the battery supply, thereby maintaining the integrity of the data and clock.
• Timekeeping Function: Includes a built-in quartz crystal that controls the timing of the clock, ensuring high accuracy in timekeeping. The device also has a programmable alarm and interrupt function that can be used for a variety of time-based applications.
• High-Speed Access: Offers a fast 70 ns access time, making it suitable for high-speed microprocessor systems.
• Low Power Consumption: Designed to operate with low power consumption, which is critical for battery-backed memory applications.
• Non-Volatile Storage: The SRAM is backed up by a self-contained lithium battery, which ensures that data is retained even when the main power is lost.

Applications

The M48T37Y-70MH6E is ideal for a wide array of applications where reliable and durable non-volatile memory storage is essential. These can include industrial control systems, utility meters, security systems, network routers and switches, medical equipment, and other embedded systems that require battery-backed SRAM with an integrated timekeeping capability.

Package and Quality

The device comes in a 44-pin SOH (SOIC) package that is RoHS compliant and designed for surface-mount technology (SMT). STMicroelectronics is known for its commitment to quality, and the M48T37Y-70MH6E is no exception, providing robust performance and reliability for critical applications.