M41ST85WMH6E - STMicroelectronics

Manufacturer Part Number

M41ST85WMH6E

Manufacturer

STMicroelectronics

Introduction

The M41ST85WMH6E is a multifunctional integrated real-time clock and NVRAM supervisor.

Product Features and Performance

Alarm function

Support for Leap Year

44B of NVSRAM

Square Wave Output

Supervisor circuitry

Watchdog Timer for system reset

Support for 24-hour time format HH:MM:SS:hh

Date format YY-MM-DD-dd

I2C 2-Wire Serial interface for communication

Product Advantages

Battery-backed non-volatile storage

Low timekeeping current of maximum 0.5mA

Built-in alarms and timers for complex scheduling

Key Technical Parameters

Memory Size: 44 bytes

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

Date Format: YY-MM-DD-dd

Interface: I2C, 2-Wire Serial

Voltage - Supply: 2.7V to 3.6V

Voltage - Supply, Battery: 2.5V to 3.5V

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

Operating Temperature: -40°C to 85°C

Quality and Safety Features

Robust operation in extended temperature range

Compatibility

Surface Mount compatible

28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets

Supplier Device Package: 28-SOH

Application Areas

Suitable for a wide range of applications requiring timekeeping and data storage

Product Lifecycle

Product Status: Obsolete

End of life with limited replacement options

Several Key Reasons to Choose This Product

Highly integrated RTC with backup NVSRAM

Low power consumption for battery preservation

Incorporated watchdog timer to prevent system failures

Comprehensive feature set including alarms and leap year correction

Durable and reliable for harsh temperature environments

Multiple interface options for greater design flexibility