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	Package / Case	Supplier Device Package

DS12C887+ IC RTC CLK/CALENDAR PAR 24EDIP Analog Devices Inc./Maxim Integrated	1,147 In Stock	1 : ¥106.07000 Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output	113B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	Parallel	4.5V ~ 5.5V	2.5V ~ 4V	15mA @ 4.5V ~ 5.5V	0°C ~ 70°C	Through Hole	24-DIP Module (0.600", 15.24mm)	24-EDIP
M41T93RQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	2,318 In Stock	1 : ¥33.50000 Cut Tape (CT) 1,000 : ¥17.71019 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	2.7V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)
M41T93SQA6F IC RTC CLK/CALENDAR SPI 16QFN STMicroelectronics	630 In Stock	1 : ¥36.94000 Cut Tape (CT) 1,000 : ¥19.50255 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer	7B	HH:MM:SS:hh (24 hr)	YY-MM-DD-dd	SPI	3V ~ 5.5V	1.8V ~ 5.5V	10µA @ 5.5V	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad	16-QFN (4x4)

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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.