Real Time Clocks

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	DigiKey Programmable	Type	Features	Memory Size	Time Format	Date Format	Interface	Voltage - Supply	Voltage - Supply, Battery	Current - Timekeeping (Max)	Operating Temperature	Mounting Type	Grade	Qualification	Package / Case	Supplier Device Package

RV-3028-C7 32.768KHZ 1PPM-TA-QA IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	56,506 In Stock	1 : ¥25.12000 Cut Tape (CT) 1,000 : ¥13.73967 Tape & Reel (TR)	C7	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Battery Switch, EEPROM, External Event Interrupt, Leap Year, Programmable Clock Output, RAM, Timer, Trickle Charger	2B, 43B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.1V ~ 5.5V	1.1V ~ 5.5V	0.06µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	Automotive	AEC-Q200	8-WCDFN	8-SON (3.2x1.5)
DS3231MZ+TRL IC RTC CLK/CALENDAR I2C 8SOIC Analog Devices Inc./Maxim Integrated	3,375 In Stock	1 : ¥80.34000 Cut Tape (CT) 2,500 : ¥43.86702 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	2.3V ~ 5.5V	2.3V ~ 5.5V	130µA ~ 200µA @ 3.63V ~ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOIC

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Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.