M48T35Y-70MH1E

Real Time Clock Overview

The M48T59Y-70MH1E is a Real-Time Clock (RTC) IC from STMicroelectronics' Timekeeper series, featuring parallel interface and integrated SNAPHAT socket. It supports YY-MM-DD-dd date and HH:MM:SS time formats with alarm, leap year, and watchdog timer functions. Operating at 4.5V to 5.5V with 3mA current consumption, it uses a 28-SOH surface-mount package. The component is currently marked as obsolete.

Real Time Clock Feature Summary

• Integrated RTC with 256 kB SRAM and parallel bus interface
• Built-in SNAPHAT socket for battery/crystal module
• Features alarms, leap year correction, and watchdog timer

Real Time Clock Applications

• Industrial systems requiring non-volatile timekeeping
• Embedded controllers needing calendar and clock functions
• Equipment utilizing parallel memory architectures

Real Time Clock Procurement Notes

This part number is officially listed as obsolete by the manufacturer. Verification of availability should focus on distributor surplus stock or alternative sourcing channels rather than direct manufacturing orders.

Real Time Clock Selection Notes

Select this component only if the design requires a parallel interface and a 28-pin SOH package with an integrated battery socket. Verify that the 4.5V to 5.5V supply range and 70ns access speed meet system requirements.

Real Time Clock Part Context

Part of the M48T59 family, which provides high-capacity SRAM alongside RTC functionality. It serves as a pin-compatible solution for applications previously using standard SRAM but requiring timekeeping capabilities without external components.

Real Time Clock Replacement Considerations

As the M48T59Y-70MH1E is obsolete, consider the M48T35Y-70MH1F for similar parallel RTC functionality in a 28-SOX package, though storage capacity differs.