STMicroelectronics

M48T02-70PC1

M48T02-70PC1 Description

The M48T02-70PC1 from STMicroelectronics is a high-performance Real-Time Clock (RTC) and Calendar IC designed for precision timekeeping in embedded systems. Housed in a 24-pin DIP package, this parallel-interface device operates within a 4.75V to 5.5V supply range and supports a 24-hour time format (HH:MM:SS) with leap year compensation. It belongs to the Timekeeper® series, renowned for reliability in industrial and commercial applications. With an operating temperature range of 0°C to 70°C, it ensures stable performance in moderate environments. The device consumes a maximum of 3mA during timekeeping, making it energy-efficient for battery-backed systems.

M48T02-70PC1 Features

• Parallel Interface: Enables straightforward integration with microcontrollers and legacy systems.
• Leap Year Compensation: Automatically adjusts for leap years, reducing firmware complexity.
• Low Power Consumption: Ideal for battery-backed applications with 3mA max current draw.
• Wide Voltage Range (4.75V–5.5V): Compatible with standard 5V logic systems.
• RoHS3 Compliant & REACH Unaffected: Meets environmental and regulatory standards.
• Through-Hole Mounting (24DIP): Simplifies prototyping and repair in industrial designs.
• MSL 1 (Unlimited Shelf Life): No moisture sensitivity concerns during storage or handling.

M48T02-70PC1 Applications

This RTC is ideal for systems requiring accurate timekeeping with minimal host intervention, such as:

• Industrial Automation: Timestamping for data loggers, PLCs, and control systems.
• Medical Devices: Event recording in diagnostic equipment.
• Point-of-Sale (POS) Terminals: Transaction time synchronization.
• Legacy Embedded Systems: Upgrading older designs with reliable parallel-interface RTCs.
• Telecom Infrastructure: Network timing modules where simplicity is prioritized over I2C/SPI.

Conclusion of M48T02-70PC1

The M48T02-70PC1 stands out for its robust parallel interface, leap year support, and low power consumption, making it a dependable choice for 5V systems needing precise timekeeping without complex protocols. Its through-hole package and unlimited MSL rating further enhance usability in repair-friendly or long-lifecycle designs. While newer serial-interface RTCs dominate modern applications, this device remains a go-to solution for legacy upgrades or environments where parallel communication is preferred.