Microchip Technology MCP79411-I/SN Real-Time Clock/Calendar with EEPROM

The MCP79411-I/SN from Microchip Technology is a feature-rich Real-Time Clock/Calendar (RTCC) component ideal for timekeeping and data storage in a wide array of electronic applications. This versatile device integrates a battery-backed RTCC with EEPROM memory, providing a full binary-coded decimal (BCD) clock/calendar with 64 bytes of battery-backed SRAM and additional 128 bytes of EEPROM.

Designed to maintain accurate timekeeping with minimal power consumption, the MCP79411-I/SN operates over the standard I2C bus interface, facilitating easy integration into existing systems. The RTCC can track seconds, minutes, hours, days of the week, date, months, and years, with leap year compensation valid up to the year 2399. It also provides a multitude of features including alarms, power-fail timestamp, digital trimming for accuracy, and a programmable output control for clock signal or general-purpose use.

The device comes in a space-saving 8-pin SOIC package, suitable for surface mount technology, and operates over an industrial temperature range of -40°C to +85°C. The MCP79411-I/SN is designed for applications that require long-term timekeeping and data retention without external power, such as smart energy meters, consumer electronics, handhelds, and other embedded systems.

Key features of the MCP79411-I/SN include:

• Real-Time Clock/Calendar tracks time with seconds, minutes, hours, day, date, month, and year.
• 64 bytes of battery-backed SRAM and 128 bytes of EEPROM for data storage.
• Automatic leap year compensation.
• Digital trimming for precise timekeeping.
• Programmable clock output for peripheral devices.
• Dual alarms with single interrupt output.
• Low-power consumption.
• Power-fail timestamp logs the time when power is lost.
• Operates on the I2C bus interface.
• Wide voltage range (1.8V to 5.5V) and industrial temperature range support.

The MCP79411-I/SN is a reliable and cost-effective solution for electronic systems that require an embedded timekeeping and data storage solution. Its integration of EEPROM and SRAM with an RTCC ensures extended functionality while maintaining a small footprint.