The MK48T02B-25 is a state-of-the-art Timekeeper SRAM by STMicroelectronics, designed to provide a full-featured battery-backed clock and memory solution for sophisticated electronic systems. This integrated device offers 2 Kbytes of static RAM along with a real-time clock/calendar (RTC) and an onboard quartz crystal, all encapsulated in a single 24-pin DIP (Dual In-line Package) or SOIC (Small Outline Integrated Circuit) package.

Key Features

• Integrated Real-Time Clock/Calendar: Accurately keeps track of seconds, minutes, hours, days, date, month, and year, with leap year compensation valid up to 2100.
• 2 Kbytes of SRAM: Provides reliable data storage with easy access through a multiplexed address and data bus.
• Self-Contained Battery: Ensures data and clock functionality are maintained for over 10 years in the absence of an external power supply.
• Programmable Alarm and Interrupt Functions: Offers versatility with the ability to set alarms and generate interrupts for system management.
• Low Power Consumption: Designed for energy efficiency, the MK48T02B-25 is ideal for battery-powered applications.
• Serial Interface: Simplifies the connection to microcontrollers and processors through an industry-standard serial I²C interface.

Applications

The MK48T02B-25 is perfect for applications requiring reliable timekeeping and data retention without external power, such as:

• Embedded Systems
• Utility Meters
• Security Systems
• Network Servers and Routers
• Industrial Control Systems

Technical Specifications

• Memory Size: 2 Kbytes
• Package Type: 24-pin DIP, 24-pin SOIC
• Voltage Supply: 4.75V to 5.5V
• Operating Temperature: 0°C to +70°C
• Timing Precision: ±25 ppm at 25°C

In summary, the MK48T02B-25 Timekeeper SRAM by STMicroelectronics is a robust, highly integrated solution for systems that require accurate timekeeping along with reliable non-volatile memory. Its low power consumption and long-term data retention make it an ideal choice for a wide range of applications.