STMicroelectronics M48T02-200PC1 Timekeeper SRAM
The M48T02-200PC1 is a high-performance 2KB (2 K x 8) Timekeeper SRAM designed and manufactured by STMicroelectronics. This integrated device combines a versatile 8-bit parallel static RAM with a real-time clock (RTC), a crystal, and an embedded lithium battery. It provides a full-featured, byte-wide SRAM and a timekeeping function in a single package, making it an ideal solution for applications that require battery-backed non-volatile memory and an accurate time base for time-stamping, clock, or calendar functions.
One of the key features of the M48T02-200PC1 is its self-contained timekeeping system. The RTC offers precision time measurement and includes an oscillator, divider chain, and registers for seconds, minutes, hours, day, date, month, and year. The RTC is designed to handle leap years and provides outputs for both seconds and minutes that can be used for time-of-day alarms or other timing signals.
The integrated lithium battery ensures that the timekeeping and SRAM functions continue to operate even when the main power supply is lost. This battery has a lifespan of over 10 years, providing long-term reliability for critical data retention and timekeeping tasks. The M48T02-200PC1 operates over a wide voltage range from 4.5V to 5.5V and features a typical clock accuracy of ±5ppm at 25°C, which translates to less than 3 minutes per year deviation.
Designed for easy integration into a wide range of applications, the M48T02-200PC1 comes in a 24-pin, 600 mil DIP (Dual In-line Package) that is compatible with standard socket or board mounting techniques. Its package is recognized by UL for meeting the flammability requirements, ensuring additional safety for the end-product. The device's access time of 200ns allows for rapid data retrieval and storage, making it suitable for high-performance microprocessor systems.
The M48T02-200PC1 is widely used in telecommunications, industrial control systems, utility meters, and other systems that require a dependable non-volatile memory with an integrated timekeeping capability. Its robust design and long-term data retention make it a trusted choice for maintaining critical data and time information across power cycles.
