Overview
The MCP7940N-I/SN is a real-time clock (RTC) module manufactured by Microchip Technology. This component is designed for accurate timekeeping and timestamping applications, featuring integrated EEPROM memory and various functionalities that make it suitable for a wide range of electronic devices. The MCP7940N-I/SN is particularly noted for its low power consumption, battery backup capabilities, and easy integration with microcontrollers via an I2C interface.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 1.8V to 5.5V |
| Real-Time Clock Accuracy | ±20ppm |
| EEPROM Size | 64 bytes |
| Alarm Output | Programmable square wave output |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 8-pin SOIC |
| Battery Backup Voltage | External battery for backup power |
Key Features
- Low Power Consumption: Ideal for battery-operated devices.
- Alarm Functionality: Supports multiple alarm settings.
- I2C Interface: Allows for easy communication with microcontrollers.
- Battery Backup: Ensures timekeeping during power loss.
- EEPROM Memory: Stores user data and configuration settings.
- Automatic Daylight Saving Time Adjustment: Simplifies timekeeping in changing time zones.
Applications
The MCP7940N-I/SN is suitable for various applications that require accurate timekeeping and data storage. These include:
- Consumer electronics
- Industrial control systems
- Medical devices
- Automotive systems
- IoT devices
Its low power consumption and battery backup features make it particularly useful in battery-operated devices and systems that require continuous timekeeping even during power outages.
Q & A
- What is the primary function of the MCP7940N-I/SN?
The primary function of the MCP7940N-I/SN is to provide accurate timekeeping and timestamping with integrated EEPROM memory. - What is the operating voltage range of the MCP7940N-I/SN?
The operating voltage range is 1.8V to 5.5V. - What is the accuracy of the real-time clock in the MCP7940N-I/SN?
The real-time clock accuracy is ±20ppm. - Does the MCP7940N-I/SN support battery backup?
Yes, it supports battery backup to ensure continuous timekeeping during power loss. - What type of interface does the MCP7940N-I/SN use for communication?
The MCP7940N-I/SN uses an I2C interface for communication with microcontrollers. - Can the MCP7940N-I/SN be used as a replacement for the DS1307?
Yes, the MCP7940N-I/SN can be used as a replacement for the DS1307, offering additional features like integrated EEPROM and lower power consumption. - What is the package type of the MCP7940N-I/SN?
The package type is an 8-pin SOIC. - What is the EEPROM size of the MCP7940N-I/SN?
The EEPROM size is 64 bytes. - Does the MCP7940N-I/SN support alarm functions?
Yes, it supports multiple alarm settings. - What is the operating temperature range of the MCP7940N-I/SN?
The operating temperature range is -40°C to +85°C.
