Product Overview: MCP7940NT-I/MNY

The MCP7940NT-I/MNY is a compact, feature-rich Real-Time Clock/Calendar (RTCC) from Microchip Technology, designed for effective time tracking and control in embedded systems. It offers a convenient I²C interface for seamless integration with microcontrollers and other digital systems. This device is an ideal choice for applications requiring accurate timekeeping, such as industrial control systems, consumer electronics, and network servers.

Key Features

• Timekeeping: Accurate clock/calendar functionality with hours, minutes, seconds, day, date, month, and year information. The leap year compensation is valid up to 2399.
• Memory: Integrated 64-byte battery-backed SRAM, ensuring data retention during power loss.
• Alarm Functions: Dual programmable alarms that can be set on a per-minute, per-hour, daily, or weekly basis.
• Power Management: On-chip digital trimming/control for crystal compensation and an external battery input for backup power. It also features a low-power battery backup mode.
• Communication Interface: I²C serial interface for communication with microcontrollers, supporting up to 400 kHz data transfer speed.
• Unique ID: Includes a unique, factory-programmed 64-bit MAC address to simplify network node identification processes.

Applications

• Smart energy (smart meters, thermostats)
• Home appliances (microwave ovens, washing machines)
• Automotive electronics
• Office equipment (printers, fax machines)
• Handheld devices

Additional Information

The MCP7940NT-I/MNY operates over the standard temperature range of -40°C to +85°C, making it suitable for various environmental conditions. Its small footprint in an 8-pin TSSOP package allows for integration into space-constrained applications. As part of Microchip's commitment to quality, the MCP7940NT-I/MNY RTCC is designed to meet the high reliability and functionality standards expected in today’s electronic devices.