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M48T35Y-70PC1

M48T35Y-70PC1

STMicroelectronics
Real Time Clock (RTC) IC Clock/Calendar Parallel 28-DIP Module (0.600", 15.24mm)
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Overview

The M48T35Y-70PC1 is a 32 KB x 8 timekeeper SRAM with an integrated real-time clock (RTC) and battery, all housed within a 28-pin CAPHAT DIP package. This self-contained module provides non-volatile timekeeping and data storage, making it suitable for applications requiring reliable date and time functions. It features a parallel interface for easy integration into various systems.

Why Choose This Part

This device offers a self-contained solution for timekeeping and non-volatile data storage, simplifying board design by integrating the crystal, battery, and RTC. The CAPHAT package ensures long-term data retention and clock operation. Its parallel interface and JEDEC standard SRAM compatibility allow for straightforward integration into existing designs.

Applications

Industrial Control Systems
Providing accurate time and date stamping for event logging, process control, and scheduled operations in industrial automation equipment.
Point-of-Sale (POS) Terminals
Maintaining transaction timestamps and configuration data, even during power outages, ensuring data integrity and compliance.
Security and Access Control Systems
Logging events with precise timestamps for audit trails, scheduling access permissions, and maintaining system integrity.
Medical Devices
Recording usage data and critical events with date and time information, supporting regulatory compliance and diagnostics.
Data Loggers
Storing time-stamped sensor readings or operational data in environments where power interruptions may occur.

Key Specifications

Type Clock/Calendar
Features Leap Year
Interface Parallel
Date Format YY-MM-DD-dd
Time Format HH:MM:SS (24 hr)
Mounting Type Through Hole
Package / Case 28-DIP Module (0.600", 15.24mm)
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature 0degC ~ 70degC
Supplier Device Package 28-PCDIP, CAPHAT
Current - Timekeeping (Max) 2mA @ 4.75V ~ 5.5V

Getting Started

Integrating the M48T35Y-70PC1 involves connecting its parallel interface to a host microcontroller's data and address buses. Basic operations include reading and writing to the SRAM, and accessing the BCD-coded time and date registers. Developers should consult the datasheet for detailed timing diagrams and register maps.