STMicroelectronics MK48T18B-15 Timekeeper SRAM

The MK48T18B-15 is a high-performance 2K x 8 TIMEKEEPER^® Static RAM from STMicroelectronics. This integrated circuit combines a potent mix of static RAM with a battery-backed non-volatile TIMEKEEPER feature, making it an ideal solution for systems that require reliable data retention across power cycles without the need for an external battery.

At the heart of the MK48T18B-15 lies a 16Kb (2K x 8) static RAM, which provides fast access times of 150ns, ensuring high-speed data retrieval and storage, which is crucial for real-time computing applications. This SRAM is directly coupled with a precision quartz crystal and a lithium energy source, which ensures that data is maintained in the absence of an external power supply.

The device is housed in a 28-pin, 600-mil DIP CAPHAT^™ package, which encapsulates the battery and crystal within the cavity of the package. This innovative design ensures long-term reliability, as it protects the critical components from environmental factors that could affect performance. The MK48T18B-15 operates over a temperature range of 0°C to +70°C, making it suitable for a wide range of industrial and commercial applications.

One of the key features of the MK48T18B-15 is its self-contained battery, which has a shelf life of over 10 years. This allows for a long-term data retention solution without the need for external batteries or additional components. The device also includes an automatic power-fail chip deselect and WRITE protection, ensuring data integrity during power transitions.

For ease of integration, the MK48T18B-15 provides a standard JEDEC SRAM pinout, which allows for a straightforward drop-in replacement for other SRAM devices without the need for extensive board redesigns. Whether used in embedded systems, industrial controllers, or telecommunications equipment, the MK48T18B-15 from STMicroelectronics offers a reliable and low-power solution for maintaining critical data and real-time clock functionality.

With its combination of volatile and non-volatile memory capabilities, the MK48T18B-15 is an excellent choice for applications requiring data and timekeeping accuracy, even in the absence of a main power supply.