MCP7940N-I/MS - Microchip Technology

Manufacturer Part Number

MCP7940N-I/MS

Manufacturer

Microchip Technology

Introduction

Real-time clock (RTC) with alarm, SRAM, and square wave output

Product Features and Performance

Fully integrated real-time clock with alarm, leap year, and square wave output

64-byte of SRAM for data storage

Operates from 1.8V to 5.5V supply

Low current consumption of 1.2μA in timekeeping mode

Supports 12/24-hour time format with year-month-day-day-of-week calendar

Automatic leap year compensation

Product Advantages

Wide operating voltage range

Very low power consumption

Integrated SRAM for data storage

Robust features like alarm and square wave output

Key Technical Parameters

Operating voltage: 1.8V to 5.5V

Operating temperature: -40°C to 85°C

Time/date format: HH:MM:SS, YY-MM-DD-dd

Timekeeping current: 1.2μA max @ 3.3V

SRAM size: 64 bytes

Quality and Safety Features

Compliant with RoHS3 directive

Automotive-grade AEC-Q100 qualification

Compatibility

Surface mount 8-MSOP package

Compatible with I2C/2-wire serial interface

Application Areas

Automotive electronics

Industrial control systems

Consumer electronics

Embedded systems

Product Lifecycle

This product is an active, in-production part from Microchip Technology.

Replacement or upgrade options may be available from Microchip.

Key Reasons to Choose This Product

Highly integrated real-time clock with advanced features like alarm and SRAM

Excellent power efficiency with very low timekeeping current

Wide operating voltage and temperature range for versatile applications

Automotive-grade quality and safety certification

Widely compatible through standard I2C/2-wire interface