STMicroelectronics M48Z58Y-70MH1TR: Robust Timekeeper SRAM

The M48Z58Y-70MH1TR is a 64 Kbit (8K x 8) Timekeeper SRAM which integrates a binary time counter and a high-performance CMOS static RAM on the same chip. Manufactured by STMicroelectronics, a global semiconductor leader, this product is designed to offer a convenient and reliable solution for systems requiring memory and an embedded timekeeping function.

This Timekeeper SRAM is a non-volatile memory, thanks to its self-contained lithium battery, which ensures data retention and a reliable clock function, even when the main power is turned off. With a battery life of typically over 10 years, the M48Z58Y-70MH1TR offers long-term dependability for critical applications.

The device operates at a voltage range of 4.5V to 5.5V and provides a stable and precise timekeeping feature with an accuracy of ±5 ppm at 25°C. The access time of 70 ns makes this SRAM suitable for high-speed microprocessor systems. With an operating temperature range of 0°C to +70°C, it can be used in various environments and applications.

The M48Z58Y-70MH1TR comes in a 28-pin, 600 mil SOIC package, which is RoHS compliant and suitable for surface mount technology (SMT). The integration of RAM and timekeeping functions in a single package simplifies system design, reduces the number of components required, and conserves board space.

Key features of the M48Z58Y-70MH1TR include:

• Integrated ultralow power SRAM and real-time clock
• Self-contained battery and crystal in the CAPHAT™ DIP package
• Counters for seconds, minutes, hours, day, date, month, years, and century
• Automatic leap year compensation
• Serial number space for traceability
• BYTEWIDE™ bus for easy integration
• Software-controlled clock calibration for high accuracy

The M48Z58Y-70MH1TR is ideal for applications in industrial control systems, utility meters, POS terminals, medical devices, and other systems where reliable timekeeping is crucial. Its robust design ensures that it will continue to keep time and retain data for years to come, even in the event of a power failure.