The M48T18-100PC1 is a 64 Kbit 8Kb x8 TIMEKEEPER® Static RAM integrated with a built-in 32.768 kHz quartz crystal and lithium battery. Manufactured by STMicroelectronics, this device is designed to provide a full-featured, byte-wide non-volatile static RAM, with a long-term data retention capability powered by the integrated battery. It is an ideal memory solution for applications that require data and timekeeping to be maintained in the absence of an external power source.

Key Features

• Integrated Power Supply: The M48T18-100PC1 includes a factory-installed lithium energy cell and a precision crystal, ensuring over 10 years of data retention and clock functionality in the absence of external power.
• Memory Size: It features 64 Kbit (8K x 8) of non-volatile static RAM, allowing for reliable data storage with quick access times.
• Real-time Clock (RTC): The device incorporates a real-time clock with an accuracy of ±5 ppm at 25°C, which translates to less than 3 minutes per year. The RTC includes year, month, day, date, hours, minutes, and seconds.
• Package: Encased in a 28-pin, 600 mil DIP CAPHAT™ package, it is designed for easy integration into a wide variety of applications.
• Automatic Power-fail Chip Deselect and Write Protection: Writes to the memory are inhibited when VCC falls below a certain threshold, ensuring data integrity during power transitions.

Applications

The M48T18-100PC1 is widely used in systems that require the reliability of non-volatile memory with an integrated timekeeping function. Common applications include:

• Utility meters
• Security systems
• Industrial control systems
• Point of Sale (POS) terminals
• Network routers and switches

With its robust design and integrated power supply, the M48T18-100PC1 is a versatile component that adds reliable data storage and timekeeping capabilities to electronic systems, ensuring continuous operation even when external power is not available.