Microchip MCP79412T-I/MNY Real-Time Clock/Calendar with EEPROM

The MCP79412T-I/MNY is a feature-rich Real-Time Clock/Calendar (RTCC) component designed by Microchip Technology. It is an I²C-compatible, low-power device that not only keeps track of time and date but also offers additional memory and unique identification features. This product is ideal for applications requiring accurate timekeeping, such as in data loggers, smart meters, and various industrial or consumer electronic devices.

Key Features

• Timekeeping: This RTCC maintains accurate time tracking with hours, minutes, and seconds, as well as day, date, month, and year information. The leap year compensation is valid up to 2399, ensuring long-term accuracy without the need for manual adjustments.
• Battery-Backed Operation: The MCP79412T-I/MNY includes a battery backup input, allowing the device to continue keeping time even when the primary power supply is lost, making it highly reliable in critical applications.
• EEPROM Memory: It comes with 64 bytes of EEPROM, providing additional storage for data that must be preserved during power loss.
• Unique ID: An integrated unique electronic serial number is embedded into the device. This 64-bit ROM is factory-programmed and can be used for network node identification, ensuring the authenticity and traceability of the product.
• Digital Trimming: The device offers digital trimming capabilities, allowing the user to calibrate the oscillator for precise timekeeping tailored to specific application needs.
• Multiple Alarms: It features dual programmable alarms that can be set to trigger on a minute, hour, day, or date basis, providing versatility for various scheduling and reminder applications.
• Power-Fail Time-Stamp: A timestamp feature logs the time when the device switches to battery backup, aiding in data integrity checks and diagnostics.

Technical Specifications

• Supply Voltage: 1.8V to 5.5V
• Temperature Range: -40°C to +85°C
• Communication Interface: I²C (400 kHz)
• Package: 8-pin TDFN (3x3 mm) package, which is suitable for space-constrained applications.

With its combination of precise timekeeping, additional memory, and unique identification, the MCP79412T-I/MNY from Microchip Technology is a versatile and reliable component for any design requiring an embedded RTCC solution.