The DS1340Z-33+ is a Real Time Clock (RTC) and Calendar IC manufactured by Analog Devices. The device uses an I2C interface to communicate with other devices, and features Battery Backup, extremely high accuracy, and a slew of features such as alarm management, supercapacitor backup, and more. It is capable of counting seconds, minutes, hours, days, months, years, and even leap years. This makes the device suitable for applications such as personal organizers, automotive navigation systems, and other device requiring accurate timekeeping features.