Microchip Technology MCP79411T-I/ST Real-Time Clock/Calendar

The MCP79411T-I/ST is a highly accurate, I2C-compatible real-time clock/calendar (RTCC) from Microchip Technology. It is designed to maintain accurate timekeeping and calendar functionality, with the added benefit of an integrated EEPROM to store user data and settings. This component is ideal for applications in smart energy, home appliances, industrial control systems, and consumer electronics where precise time tracking is crucial.

With battery-backup capabilities, the MCP79411T-I/ST ensures that timekeeping continues even when the main power source is lost. This feature makes it a reliable choice for systems that require uninterrupted time tracking. The integrated EEPROM provides 64 bytes of storage, which can be used to store data that must be preserved during power loss, such as critical system parameters or event logs.

The device supports a wide range of clock frequencies, with a typical frequency accuracy of ±5ppm over the industrial temperature range. This precision is maintained by a built-in digital trimming circuit that can compensate for crystal aging and temperature drift, ensuring that the clock remains accurate over time and across different operating conditions.

Additional features of the MCP79411T-I/ST include a programmable calendar with leap year correction, 24-hour or 12-hour formats with an AM/PM indicator, multiple alarms, and a programmable output pin for clock signal generation or alarm notification. The device also includes a unique ID with a pre-programmed EUI-48™ MAC address, which is useful for networked applications requiring unique identification.

The MCP79411T-I/ST is available in a TSSOP-8 package and operates over the standard industrial temperature range of -40°C to +85°C. Its small footprint and low power consumption make it an excellent choice for space-constrained and battery-powered applications.

With its combination of precise timekeeping, additional memory, and extended temperature range, the MCP79411T-I/ST from Microchip Technology is a versatile and reliable solution for maintaining accurate time and date information in a wide array of electronic systems.