DS3231MZ/V+T

DS3231MZ/V+T is a low-cost, extremely accurate, I²C real-time clock. The device incorporates a battery input and maintains accurate timekeeping when the main power to the device is interrupted. The integration of the microelectromechanical systems resonator enhances the long-term accuracy of the device and reduces the piece-part count in a manufacturing line. The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at end of the month is automatically adjusted for months with fewer than 31 days, including corrections for the leap year. Two programmable time-of-day alarms and a 1Hz output are provided. Address and data are transferred serially through an I²C bidirectional bus. A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and automatically switch to the backup supply when necessary. Applications include power meters and industrial applications.

• Highly accurate RTC with integrated MEMS resonator completely manages all timekeeping functions
• Timekeeping accuracy is Q0.432Seconds/Day max (VCC or VBAT = +3.3V, TA = -45 to +85°C)
• Footprint and functionally compatible to DS3231, two time-of-day alarms
• 1Hz and 32.768KHz outputs, 2.3 to 5.5V supply voltage range
• Reset output and pushbutton input with debounce, digital temp sensor with ±3°C accuracy
• Simple serial interface connects to most microcontrollers
• Battery-backup input for continuous timekeeping
• Low power operation extends battery-backup run time
• 32KHz frequency tolerance is ±2.5% max (VCC or VBAT = +3.3V, TA = -45 to +85°C)
• 8 SO package, operating temperature range from -45°C to +85°C

Note

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party