Microchip Technology's MCP79400T-I/SN Real-Time Clock/Calendar

The MCP79400T-I/SN is a highly integrated Real-Time Clock/Calendar (RTCC) from Microchip Technology, designed for time-tracking and control applications in a wide range of electronic devices. This compact, serial interface RTCC is housed in an 8-SOIC (0.209", 5.30mm Width) package, making it suitable for space-constrained applications.

The MCP79400T-I/SN features a battery-backed non-volatile memory and a built-in digital trimming circuit that can compensate for crystal frequency drift, ensuring accurate timekeeping. The device offers I²C communications, allowing for simple integration with a microcontroller or other I²C-compatible devices.

Key features of the MCP79400T-I/SN include:

• Real-Time Clock/Calendar tracks time in hours, minutes, and seconds, and the date in days, months, and years.
• Battery Back-up Input for continuous timekeeping and device operation.
• Low power consumption suitable for battery-powered applications.
• Programmable clock output for peripheral device control.
• 64 Bytes of battery-backed SRAM and 1Kbit of EEPROM for data storage.
• Unique MAC address option for networked devices.
• Automatic leap year compensation.
• Multifunction pin that can be configured as an alarm output, square wave output, or general-purpose output.
• Operating temperature range from -40°C to +85°C, ideal for industrial applications.

The MCP79400T-I/SN is perfect for a variety of applications, including smart energy (such as meters), home appliances, automotive electronics, and consumer electronics where accurate timekeeping is paramount. With its rich feature set and Microchip's reputation for quality, this RTCC module is an excellent choice for designers looking to add reliable time and date functions to their systems without significant power or space overhead.