Manufacturer Part Number
MCP7940M-I/SN
Manufacturer
Microchip Technology
Introduction
The MCP7940M-I/SN is a clock/calendar component that maintains accurate timekeeping with an integrated battery backup.
Product Features and Performance
Clock/Calendar Functionality
Alarm Function
Leap Year Compensation
Square Wave Output
64 Bytes of SRAM
12/24 Hour Time Format
YY-MM-DD-dd Date Format
I2C, 2-Wire Serial Interface
Low-power Timekeeping (1µA @ 5.5V)
Product Advantages
Reliable Maintenance of Time
Flexible Voltage Supply Range (1.8V ~ 5.5V)
Stable Timekeeping in Extended Temperature Range (-40°C ~ 85°C)
Space-Efficient Surface Mount Package
Key Technical Parameters
Time Format: HH:MM:SS (12/24 hr)
Date Format: YY-MM-DD-dd
Interface: I2C, 2-Wire Serial
Voltage - Supply Range: 1.8V ~ 5.5V
Current - Timekeeping: 1µA @ 5.5V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 8-SOIC
Quality and Safety Features
Accurate Timekeeping Across Temperature Extremes
Battery Backup for Reliable Operation
Compatibility
Universal I2C Interface for Easy Integration
Application Areas
Industrial Timing
Consumer Electronics
Telecommunications
Embedded Systems
Product Lifecycle
Active Status (Not Nearing Discontinuation)
Availability of Replacements or Upgrades Likely
Several Key Reasons to Choose This Product
Reliable Operation with Battery Backup
Compatibility with Various Systems via I2C
Minimal Power Consumption for Timekeeping
Wide Operating Temperature Range
Small Footprint for Space-Constraint Applications
Consistent Performance with Leap Year Handling
Useful for Various Applications with Alarm and Square Wave Features
Long-term Availability for Continuous Supply