DS1307ZN in DS3231 / DS1307 RTC Family
The DS1307ZN is a low-power, full binary-coded decimal clock/calendar serial real-time clock IC manufactured by Analog Devices (formerly Maxim Integrated). This family provides hours, minutes, seconds, day, date, month, and year information with automatic compensation for leap years and months with fewer than 31 days. It operates via an I2C serial interface and features a built-in power-sense circuit that detects power failures and automatically switches to the backup battery supply to maintain timekeeping integrity.
Variants in This Sub-Family
The DS1307ZN variants differ primarily in their packaging and temperature ratings. The 'N' suffix typically denotes an industrial temperature range of -40°C to +85°C, compared to the standard commercial range. Packaging options focus on the 8-pin SOIC (150-mil) format, with the '+T&R' designation indicating lead-free (RoHS) compliance and shipment in tape-and-reel format for high-volume automated assembly lines.
