MCP7940NT-E/MS - Microchip Technology

Manufacturer Part Number

MCP7940NT-E/MS

Manufacturer

Microchip Technology

Introduction

The MCP7940NT-E/MS is a real-time clock (RTC) integrated circuit (IC) designed for a wide range of applications, including consumer electronics, industrial automation, and automotive systems.

Product Features and Performance

Integrated real-time clock with calendar function

Supports 12-hour and 24-hour time formats

Provides alarm, square wave, and leap year functions

Low power consumption in timekeeping mode (typically 1.2 μA at 3.3V)

Wide operating voltage range of 1.8V to 5.5V

Operating temperature range of -40°C to 125°C

Integrated SRAM memory (64 bytes)

2-wire serial interface for easy integration

Product Advantages

Robust and reliable performance for mission-critical applications

Compact and power-efficient design for space-constrained designs

Flexible configuration options to suit diverse application requirements

Seamless integration with a wide range of microcontrollers and systems

Key Technical Parameters

Supply voltage: 1.8V to 5.5V

Timekeeping current: Typically 1.2 μA at 3.3V

Operating temperature range: -40°C to 125°C

Memory size: 64 bytes of SRAM

Interface: 2-wire serial

Quality and Safety Features

Compliant with RoHS3 (Restriction of Hazardous Substances) directive

Automotive-grade qualification (AEC-Q100)

Compatibility

The MCP7940NT-E/MS is compatible with a wide range of microcontrollers and embedded systems that support the 2-wire serial interface.

Application Areas

Consumer electronics (e.g., small appliances, remote controls)

Industrial automation (e.g., programmable logic controllers, data loggers)

Automotive systems (e.g., dashboard clocks, telematics)

Medical devices

General-purpose microcontroller-based applications

Product Lifecycle

The MCP7940NT-E/MS is an actively supported product by Microchip Technology. There are no indications of it being discontinued, and the manufacturer continues to offer compatible replacement or upgrade options as needed.

Key Reasons to Choose This Product

Reliable and robust performance in a wide range of operating conditions

Low power consumption for extended battery life in battery-powered applications

Flexible configuration options to meet diverse application requirements

Seamless integration with a wide range of microcontrollers and systems

Automotive-grade qualification for mission-critical applications

Compact and space-efficient design for space-constrained designs

Long-term product availability and support from a trusted manufacturer