M48T37Y-70MH1E

Real Time Clock Overview

The M48T59Y-70MH1E is a Real-Time Clock (RTC) IC from the Timekeeper series by STMicroelectronics. It features a parallel interface and operates within a supply voltage range of 4.5V to 5.5V, with a maximum current consumption of 3mA. The device provides clock/calendar functionality in a 28-SOH package equipped with a Snaphat socket for battery/crystal integration. Key specifications include support for YY-MM-DD-dd date format and HH:MM:SS (24-hour) time format. It includes features such as alarms, leap year compensation, and a watchdog timer.

Real Time Clock Feature Summary

• Integrated RTC with parallel bus interface
• Snaphat socket compatible for battery and crystal
• Includes alarm, leap year, and watchdog timer functions

Real Time Clock Applications

• Systems requiring non-volatile timekeeping
• Industrial control units
• Embedded devices needing calendar tracking

Real Time Clock Procurement Notes

Verify component status as the M48T59Y-70MH1E is listed as obsolete. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing Snaphat battery modules when sourcing replacements.

Real Time Clock Selection Notes

Select based on the requirement for a parallel interface RTC with integrated battery backup capabilities via the Snaphat connector. Verify that the 4.5V to 5.5V operating voltage aligns with the system power rails. Consider the 28-SOH surface mount package constraints during PCB layout.

Real Time Clock Part Context

This part belongs to the M48T59 family of Timekeeper RTCs. It shares characteristics with other variants like the M48T59Y-70MH1F, differing primarily in packaging quantity (tube vs. tape & reel). The 'Y' suffix typically denotes specific temperature or feature variations within the STMicroelectronics portfolio.

Real Time Clock Replacement Considerations

Direct substitutes may be limited due to the obsolete status. Check for pin-compatible alternatives within the M48Txx series or modern RTCs with parallel interfaces. Ensure any replacement supports the Snaphat mounting style if mechanical continuity is required.