M41T94MQ6E - STMicroelectronics

Manufacturer Part Number

M41T94MQ6E

Manufacturer

STMicroelectronics

Introduction

The M41T94MQ6E is an obsolete real-time clock/calendar with a built-in 44-byte NVRAM.

Product Features and Performance

Clock and calendar functionality

Alarm feature

Capability to handle leap years

44 bytes of NVRAM for data storage

Square wave output for interfacing

Watchdog timer for system reset and recovery purposes

Time format: HH:MM:SS:hh (24-hour format)

Date format: YY-MM-DD-dd

SPI interface for communication

Surface mount design suitable for compact PCB layouts

Product Advantages

Consolidates multiple timing features in one chip

Provides battery backup for continuous timekeeping

Low power consumption maximizes battery life

Key Technical Parameters

Voltage - Supply range: 2.7V to 5.5V

Voltage - Supply, Battery range: 2.5V to 3.5V

Current - Timekeeping (Max): 1.4mA when supplied between 2.7V to 5.5V

Operating Temperature range: -40°C to 85°C

Quality and Safety Features

Robust operating temperature range ensures stability in varying environments

Compatibility

Compatible with SPI bus for flexible integration

Surface mount 16-SOIC package suits standard PCB manufacturing processes

Application Areas

Was used in systems requiring precise timekeeping, like data loggers and alarms

Product Lifecycle

Obsolete status indicates no longer manufactured

Replacements or upgrades may be available

Several Key Reasons to Choose This Product

Accurate timekeeping and calendar functionality ensure system events are timed precisely

On-chip NVRAM provides fail-safe data retention

Integrated features like alarms and watchdog timer offer added value

Low power requirements contribute to longer battery life for portable applications

SPI interface allows for straightforward integration into digital systems

Suitable for industrial applications given the temperature range and robust design