STMicroelectronics M48Z512AY-85PM9 - Non-Volatile SRAM

The M48Z512AY-85PM9 is a highly integrated non-volatile static RAM and real-time clock (RTC) module from STMicroelectronics, a leader in the semiconductor industry. This 512 Kbit (64K x8) SRAM offers a unique combination of volatile and non-volatile memory functionality, making it an ideal choice for a wide range of applications where data preservation and accurate timekeeping are critical.

Designed with convenience in mind, the M48Z512AY-85PM9 operates at a supply voltage of 5V and features a fast access time of 85ns, ensuring high-speed data retrieval and storage. Its non-volatile nature is assured by a self-contained lithium battery, which provides reliable data retention for over 10 years. This makes it an excellent solution for systems that require data to be preserved during power loss without the need for an external battery.

The integrated real-time clock is a key feature of this module, providing precision timekeeping capabilities with an accuracy of ±5ppm at 25°C. The RTC includes registers for seconds, minutes, hours, day, date, month, year, and century, with automatic leap year correction up to the year 2100. An additional feature is the programmable alarm function, which can be set to trigger on a specific time or date, making it suitable for time-critical tasks and event scheduling.

Moreover, the M48Z512AY-85PM9 offers a range of advanced features such as a write protect function to prevent accidental data alteration, a low power standby mode to conserve energy, and an automatic power-fail chip deselect and write protection, further safeguarding the integrity of stored data during power transitions.

With its parallel interface, this SRAM module is easy to integrate into existing systems, providing a seamless upgrade path for designs requiring non-volatile memory with RTC functionality. The M48Z512AY-85PM9 is packaged in a 28-pin, 600 mil SOIC, making it suitable for surface mount technology and compatible with standard PCB layouts.

Whether used in industrial control systems, utility meters, security systems, or other critical data storage applications, the M48Z512AY-85PM9 from STMicroelectronics offers a reliable and durable solution for preserving vital information and maintaining accurate timekeeping.