M48T02-150PC1 Clock/Timing - Real Time Clocks by STMicroelectronics

The M48T02-150PC1 is a real-time clock (RTC) and non-volatile memory device manufactured by STMicroelectronics. It is designed to provide accurate timekeeping and data storage capabilities in a compact, integrated package. Here’s a detailed description of its features and specifications:

General Features:

• Type: The M48T02-150PC1 combines a real-time clock with a 2 Kbit (256 x 8) static RAM memory, which retains data even when power is lost, thanks to its built-in lithium battery.
• Battery Backup: The device includes a lithium battery that provides power to the RTC and memory during power outages, ensuring that timekeeping and data storage are maintained without interruption.
• Timekeeping Accuracy: The RTC is designed to keep accurate time, with a typical accuracy of ±2 minutes per month at 25°C, making it suitable for applications requiring precise time tracking.

Memory Specifications:

• Memory Type: The static RAM is non-volatile, meaning it retains its data without the need for continuous power supply.
• Capacity: The device features 2 Kbits of memory, organized as 256 words of 8 bits each, allowing for the storage of small amounts of data alongside timekeeping functions.
• Access Time: The memory access time is typically around 150 ns, providing quick read and write operations.

Interface and Communication:

• Interface: The M48T02-150PC1 uses a standard parallel interface for communication, making it compatible with a wide range of microcontrollers and digital systems.
• Control Signals: The device includes control signals for read and write operations, allowing for easy integration into existing designs.

Package and Pin Configuration:

• Package Type: The M48T02-150PC1 is available in a DIP (Dual In-line Package) form factor, which is suitable for through-hole mounting on PCBs.
• Pin Count: The device typically features 8 pins, which include connections for power, ground, data input/output, and control signals.

Applications:

The M48T02-150PC1 is ideal for various applications, including:

• Consumer Electronics: Used in devices that require timekeeping, such as clocks, timers, and appliances.
• Industrial Equipment: Suitable for machinery and systems that need to log time-stamped data or maintain schedules.
• Telecommunications: Employed in systems that require accurate timekeeping for data transmission and logging.

Environmental and Reliability:

• Operating Temperature Range: The device is designed to operate within a specified temperature range, typically from -40°C to +85°C, making it suitable for both consumer and industrial applications.
• Longevity: The built-in lithium battery has a long lifespan, often rated for several years, ensuring reliable operation over extended periods.

In summary, the M48T02-150PC1 from STMicroelectronics is a versatile and reliable real-time clock and non-volatile memory solution, ideal for applications that require accurate timekeeping and data retention in a compact package. Its combination of features makes it a popular choice in various electronic designs.