STMicroelectronics

M48T08Y-10MH1E  

Real Time Clocks ICs

M48T08Y-10MH1E Description

The M48T08Y-10MH1E from STMicroelectronics is a parallel-interface real-time clock (RTC) integrated circuit (IC) designed for precise timekeeping and calendar functions. Part of the Timekeeper® series, this obsolete but historically significant component operates within a 4.5V to 5.5V supply range and features a 24-hour time format (HH:MM:SS) with leap year compensation. Its surface-mount 28-SOIC package ensures compact integration into PCB designs, while its 3mA max timekeeping current at 5V ensures efficient power usage.

M48T08Y-10MH1E Features

• Clock/Calendar Functionality: Tracks seconds, minutes, hours, day, date, month, and year (including leap years).
• Watchdog Timer: Enhances system reliability by monitoring microcontroller activity.
• Parallel Interface: Simplifies integration with legacy systems requiring direct bus communication.
• Wide Operating Voltage (4.5V–5.5V): Compatible with standard 5V logic systems.
• Industrial Temperature Range (0°C to 70°C): Suitable for commercial and light industrial environments.
• Leap Year Compensation: Automatically adjusts for leap years, reducing firmware complexity.
• MSL 3 (168 Hours): Requires careful handling due to moisture sensitivity.

M48T08Y-10MH1E Applications

This RTC IC is ideal for applications demanding accurate timekeeping with minimal host intervention, such as:

• Legacy Embedded Systems: Industrial controllers, point-of-sale terminals, and data loggers.
• Automotive Electronics: Dashboard clocks and event timers (within specified temperature limits).
• Telecom Infrastructure: Backup timing modules for network synchronization.
• Medical Devices: Time-stamping diagnostic equipment where precision is critical.
• Retro Computing: Restorations of vintage computers requiring period-accurate RTC components.

Conclusion of M48T08Y-10MH1E

While obsolete, the M48T08Y-10MH1E remains a robust solution for systems requiring parallel-interface RTCs with leap year and watchdog timer support. Its 5V compatibility and surface-mount design make it suitable for space-constrained legacy designs. Engineers maintaining or refurbishing older systems will find this IC invaluable, though modern alternatives may offer lower power consumption or I²C/SPI interfaces. For applications prioritizing simplicity and reliability over cutting-edge specs, this Timekeeper® series device delivers proven performance.

M48T08Y-10MH1E Documents

Download datasheets and manufacturer documentation for M48T08Y-10MH1E

Datasheets :

M48Tx8(Y)      

HTML Datasheet :

M48Tx8(Y)