MCP7940NT-I/ST - Microchip Technology

Manufacturer Part Number

MCP7940NT-I/ST

Manufacturer

Microchip Technology

Introduction

The MCP7940NT-I/ST is a clock/calendar real-time clock from Microchip Technology that offers a rich set of features designed to manage timekeeping in digital systems.

Product Features and Performance

Comprehensive clock/calendar functionality including hours, minutes, seconds, day, date, month, and year timing.

Corrects for leap years up to the year 2399.

Equipped with alarm functions for versatile time management.

Includes an SRAM for scratchpad data storage.

Provides a square wave output signal.

Supports both 12-hour and 24-hour formats.

Utilizes I2C 2-wire serial interface for communication.

Product Advantages

Flexible voltage supply range from 1.8V to 5.5V, with battery operation support from 1.5V to 5.5V, facilitating usage in applications with varying power supply requirements.

Low current timekeeping of 1.2µA @ 3.3V, ensuring minimal power consumption for battery-powered applications.

Automotive grade with AEC-Q100 qualification, highlighting its reliability in automotive environments.

Key Technical Parameters

Memory Size: 64B

Time Format: HH:MM:SS (12/24 hr)

Date Format: YY-MM-DD-dd

Interface: I2C, 2-Wire Serial

Voltage Supply: 1.8V ~ 5.5V

Voltage Supply, Battery: 1.5V ~ 5.5V

Current Timekeeping (Max): 1.2µA @ 3.3V

Operating Temperature: -40°C ~ 85°C

Mounting Type: Surface Mount

Quality and Safety Features

Conforms to AEC-Q100 standards, ensuring automotive-grade reliability and performance.

Compatibility

The 8-TSSOP package and I2C interface allow for easy integration into various digital systems and applications.

Application Areas

Automotive electronics

Industrial control systems

Portable consumer devices

Digital electronics requiring accurate timekeeping

Product Lifecycle

Status: Active, indicating that the product is currently in production and not near discontinuation.

Availability of replacements or upgrades: Being an active product, upgrades or replacements are typically announced well in advance of discontinuation.

Several Key Reasons to Choose This Product

Versatile power supply options and low power consumption make it ideal for battery-powered applications.

Comprehensive timekeeping features including leap year correction and alarm functionality cater to complex scheduling needs.

Automotive-grade quality and AEC-Q100 qualification ensure reliability in demanding environments.

Easy integration into systems due to its I2C interface and surface mount package.

Active product status with Microchip Technology’s reputation for long-term support reduces the risk of obsolescence.