Here listing is a RTC (Real Time Clock) based on the DS3234. It is a low-cost, extremely accurate SPI bus real-time clock with an integrated temperature-compensated crystal oscillator and crystal.
The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections of leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided.
Accuracy ±2ppm from 0°C to +40°CAccuracy ±3.5ppm from -40°C to +85°CBattery Backup Input for Continuous TimekeepingOperating Temperature RangesCommercial: 0°C to +70°CIndustrial: -40°C to +85°CLow-Power ConsumptionReal-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap YearCompensation Valid Up to 2099Two Time-of-Day AlarmsProgrammable Square-Wave Output4MHz SPI Bus Supports Modes 1 and 3Digital Temp Sensor Output: ±3°C AccuracyRegister for Aging TrimRST Input/Output300-Mil, 20-Pin SO PackageUnderwriters Laboratories Recognized
Dimensions & Weight
Dimensions
1.85 in x 1.02 in x 0.28 in (4.7 cm x 2.6 cm x 0.7 cm)
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