The MK48T87B is a highly integrated Timekeeper® SRAM module from STMicroelectronics, designed to provide a full-featured battery-backed clock and a 2K x 8 non-volatile static RAM. It is a key component for systems that require reliable timekeeping and data storage that persists through power outages.

Features and Benefits

• Integrated Real-time Clock (RTC): The device includes a quartz crystal and a real-time clock circuit that tracks time with precision in hours, minutes, and seconds. It also includes a day, month, and year calendar functionality to cover a wide range of timekeeping requirements.
• Battery Backup: With its onboard battery, the MK48T87B ensures that the clock continues to run and the RAM retains data during power failures, making it ideal for critical data retention applications.
• 2KB NV SRAM: The non-volatile SRAM provides ample space for data storage, allowing systems to quickly access and retain important information without the need for an external power source.
• Low Power Consumption: The device is designed to operate with very low power consumption, which is crucial for prolonging the life of the battery and ensuring long-term reliability.
• Watchdog Timer: An integrated watchdog timer improves system reliability by resetting the system in case of a software anomaly or malfunction.

Applications

The MK48T87B is suitable for a wide array of applications where timekeeping and data retention are critical. It is widely used in:

• Embedded systems
• Utility meters
• Security systems
• Industrial control systems
• Point of Sale (POS) terminals

Technical Specifications

The module operates within a temperature range of 0°C to +70°C and is available in a 24-pin DIP (Dual In-line Package) encapsulation, making it compatible with standard socket specifications and easy to integrate into existing designs.

With its robust feature set and reliable performance, the STMicroelectronics MK48T87B Timekeeper is an excellent choice for designers and engineers looking to incorporate secure timekeeping and data retention capabilities into their systems.