STMicroelectronics

M48T35Y-70MH1E

M48T35Y-70MH1E Description

The M48T35Y-70MH1E from STMicroelectronics is a parallel-interface real-time clock (RTC) integrated circuit (IC) belonging to the Timekeeper® series. Designed for precision timekeeping, it combines a clock/calendar function with non-volatile SRAM, ensuring data retention during power loss. Operating within a 4.5V to 5.5V supply range, it consumes a maximum of 2mA during timekeeping, making it suitable for low-power applications. The device supports a 24-hour time format (HH:MM:SS) and includes leap year compensation, enhancing accuracy for long-term use. Housed in a 28-pin SOH package, it is surface-mountable and complies with ROHS3 and REACH environmental standards.

M48T35Y-70MH1E Features

• Parallel Interface: Enables straightforward integration with microcontrollers and legacy systems.
• Wide Operating Voltage (4.5V–5.5V): Ensures compatibility with standard 5V logic systems.
• Leap Year Compensation: Automatically adjusts for leap years, reducing firmware complexity.
• Low Timekeeping Current (2mA max): Optimized for energy-sensitive designs.
• Non-Volatile SRAM: Retains critical data during power interruptions.
• Industrial Temperature Range (0°C to 70°C): Reliable performance in moderate environments.
• RoHS3 & REACH Compliant: Meets stringent environmental regulations.

M48T35Y-70MH1E Applications

This RTC IC is ideal for systems requiring accurate timekeeping with minimal power consumption, such as:

• Industrial Automation: Timestamping events in PLCs and control systems.
• Medical Devices: Logging time-sensitive data in diagnostic equipment.
• Telecommunications: Synchronizing network infrastructure components.
• Legacy Embedded Systems: Upgrading older designs with modern timekeeping capabilities.
• Point-of-Sale (POS) Terminals: Ensuring transaction timestamps remain accurate during power fluctuations.

Conclusion of M48T35Y-70MH1E

The M48T35Y-70MH1E offers a robust, obsolete but reliable solution for applications demanding precision timekeeping with parallel interfacing. Its leap year support, low power consumption, and non-volatile memory make it a standout choice for legacy and industrial systems. While newer alternatives may exist, this IC remains a proven option for designers prioritizing simplicity, durability, and compliance in moderate-temperature environments.