M41ST87WMX6 - STMicroelectronics

Manufacturer Part Number

M41ST87WMX6

Manufacturer

stmicroelectronics

Introduction

The M41ST87WMX6 is a sophisticated real-time clock device integrated with additional features like alarm, leap year recognition, NVSRAM, square wave output, supervisor, and watchdog timer functionalities, designed primarily for timekeeping and system management in complex electronic applications.

Product Features and Performance

Real-time clock/calendar functionality

Alarm feature for system alerts

Leap year compensation integrated

Non-volatile SRAM for data retention

Square wave output for timing signals

Supervisor for system stability

Watchdog timer for system reset and recovery

I2C, 2-Wire Serial interface for communication

Operates between 2.7V and 3.6V supply voltages

Time format: HH:MM:SS:hh (24 hr)

Date format: YY-MM-DD-dd

Product Advantages

Enhanced timekeeping accuracy even under fluctuating conditions

Robust in-built system monitoring with supervisor and watchdog timer

Key Technical Parameters

Voltage Supply: 2.7V ~ 3.6V

Voltage Supply, Battery: 2.5V ~ 3.6V

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

Interface: I2C, 2-Wire Serial

Memory Size: 128B

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Stable operation under wide temperature ranges from -40°C to 85°C

Reliable data retention with non-volatile memory

Compatibility

Compatible with devices requiring I2C or two-wire serial interfaces for communication.

Application Areas

Embedded systems

Industrial electronics

Communication infrastructure

Consumer electronics

Product Lifecycle

Currently listed as Obsolete

Check for availability of replacements or upgrades

Several Key Reasons to Choose This Product

Integrated multiple functionalities (RTC, alarm, leap year, etc.) reduce component counts in system designs.

High integration leads to enhanced system reliability.

Low timekeeping current maximizes battery life for battery-powered applications.

Broad operating temperature range suits a variety of harsh environments.

Non-volatile memory enhances data security upon power loss.