The DS1307ZM/TR is a low-power, full binary-coded decimal (BCD) real-time clock (RTC) with a serial interface. It provides accurate timekeeping and date information, and its small size and low power consumption make it suitable for a wide range of applications.

Applications

• Embedded systems
• Data loggers
• Industrial control systems
• Point-of-sale (POS) terminals
• Consumer electronics
• Servers and networking equipment

Features

• Real-time clock (RTC) counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
• 56-byte, battery-backed, nonvolatile (NV) RAM for data storage
• I2C serial interface
• Programmable square-wave output signal
• Automatic power-fail detect and switch circuitry
• Consumes less than 500nA in battery-backup mode with oscillator running
• Optional industrial temperature range

Benefits

• Accurate timekeeping even when the main power is off, thanks to battery backup.
• Easy integration into systems using the standard I2C serial interface.
• Nonvolatile RAM allows for storing critical data that needs to be retained during power outages.
• Programmable square wave output can be used to trigger other devices or provide timing signals.
• Low power consumption maximizes battery life in portable applications.

Additional Details

The DS1307ZM/TR utilizes a 32.768 kHz crystal oscillator for its timekeeping function. It communicates with a microcontroller or other host device through the I2C serial interface. The device includes a power-fail detection circuit that automatically switches to battery backup when the main power supply is interrupted. The 56-byte NV RAM can be used to store system configuration parameters, calibration data, or other important information. The operating voltage range is typically between 4.5V and 5.5V. It is available in an 8-pin SO package.