STMicroelectronics M48Z12-150PC1 Timekeeper SRAM

The M48Z12-150PC1 is a 16 Kbit x 8 Timekeeper SRAM designed by STMicroelectronics, which integrates a highly reliable, low-power SRAM with a battery-backed non-volatile (NV) data memory. This component is ideal for applications requiring data storage and timekeeping in a single package, particularly in systems that are sensitive to power loss.

The device features a self-contained lithium battery and quartz crystal within a monolithic package, ensuring over 10 years of data retention and an operational battery-backed clock. The battery and crystal are isolated from the external environment, which provides a high level of reliability and stability to the timekeeping function.

The M48Z12 operates at a voltage range of 4.5V to 5.5V and provides a parallel interface for easy integration into a variety of microprocessor systems. Its access time of 150ns allows for rapid data retrieval and storage, making it suitable for high-performance applications. Additionally, the device is packaged in a 28-pin, 600 mil DIP, which is a familiar and convenient format for electronic assemblies.

Key features of the M48Z12-150PC1 include an integrated power-fail deselect circuitry, which switches the device automatically to battery backup mode during power failures. This ensures data integrity and prevents data corruption during volatile power conditions. Moreover, the device supports WRITE protection to prevent inadvertent writes, which is especially critical in applications where data accuracy is paramount.

The M48Z12-150PC1 is designed for a wide range of applications, such as utility meters, security systems, industrial control systems, and other embedded systems that require a reliable non-volatile memory with an embedded real-time clock (RTC). Its robust design and integrated features make it an excellent choice for designers looking for a secure and long-lasting solution for their data and timekeeping needs.

Overall, the STMicroelectronics M48Z12-150PC1 Timekeeper SRAM is a versatile and reliable component that combines the convenience of SRAM with the reassurance of battery-backed data retention, making it an invaluable part of any mission-critical system design.