M41ST85WMX6 - STMicroelectronics

Manufacturer Part Number

M41ST85WMX6

Manufacturer

stmicroelectronics

Introduction

The M41ST85WMX6 is a clock/calendar real-time clock from STMicroelectronics, integrating features like alarms, leap year adherence, NVSRAM, a square wave output, supervisor, and watchdog timer functionalities.

Product Features and Performance

Clock/Calendar Type

Integrated Alarm Function

Leap Year Compatibility

NVSRAM for data storage

Square Wave Output for periodic interrupts

Supervisor for system integrity checks

Watchdog Timer to prevent system freezes

Product Advantages

Comprehensive timekeeping features integrated into a single chip

NVSRAM enhances data retention under power loss condition

Built-in supervisor and watchdog improve reliability and reduce system errors

Key Technical Parameters

Memory Size: 44B

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

Date Format: YY-MM-DD-dd

Interface: I2C, 2-Wire Serial

Voltage Supply Range: 2.7V ~ 3.6V

Battery Voltage Supply Range: 2.5V ~ 3.5V

Current Timekeeping (Max): 0.5mA @ 2.7V ~ 3.6V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Package/Case: 28-SOIC (0.295", 7.50mm Width)

Quality and Safety Features

Operates across a wide range of temperatures from -40°C to 85°C ensuring reliability in diverse environments

Low timekeeping current maximizes battery life

Compatibility

Compatible with systems requiring I2C or 2-wire serial interface for integration

Application Areas

Embedded systems requiring reliable timekeeping and system integrity monitoring

Consumer electronics

Industrial applications

Product Lifecycle

Status: Obsolete

Replacement products or upgrades may be available, consultation with STMicroelectronics recommended

Several Key Reasons to Choose This Product

Incorporates multiple necessary features for comprehensive time management and system control within one component

Reduces additional component needs with built-in NVSRAM, reducing system complexity

High reliability through integrated supervisor and watchdog components

Suitable for varied applications due to flexible voltage requirements and temperature resilience

Ensures long-term availability of data with low power consumption and battery-backed storage capabilities