DS1307Z-TD

The DS1307Z-TD Serial Real Time Clock is a low power, full BCD clock/ calendar plus 56 bytes of nonvolatile SRAM. Address and data are transferred serially via a 2-wire bi-directional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The leap year compensation is automatically adjusted for months with 28, 29, 30, and 31 days. The clock can operate in either 24-hour or 12-hour format, including AM/PM indicator. The device has a built-in power sense circuit which detects power failures and automatically switches to the battery supply.

Key features

• Real time clock counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap year compensation valid up to 2100
• 56 byte nonvolatile RAM for data storage
• 2-wire serial interface
• Programmable squarewave output signal
• Automatic power-fail detect and switch circuitry
• Consumes less than 1uA in battery backup mode with oscillator running
• Optional industrial temperature range -40°C to +85°C
• Recognized by Underwriters Laboratory