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

BU9873NUX-TTR IC RTC CLK/CALENDAR I2C 8VSON Rohm Semiconductor	9,130 In Stock	1 : ¥9.69000 Cut Tape (CT) 4,000 : ¥4.10923 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	1µA ~ 1.35µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-UFDFN Exposed Pad	VSON008X2030
BU9873FVT-GE2 IC RTC CLK/CALENDAR I2C 8TSSOP Rohm Semiconductor	5,505 In Stock	1 : ¥9.69000 Cut Tape (CT) 3,000 : ¥3.63264 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	1µA ~ 1.35µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP-B
BU9873F-GTE2 IC RTC CLOCK/CALENDAR I2C 8SOP Rohm Semiconductor	281 In Stock	1 : ¥9.69000 Cut Tape (CT) 2,500 : ¥4.10924 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	1µA ~ 1.35µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.173", 4.40mm Width)	8-SOP
BU9873FVM-GTTR IC RTC CLK/CALENDAR I2C 8MSOP Rohm Semiconductor	269 In Stock	1 : ¥9.69000 Cut Tape (CT) 3,000 : ¥4.10924 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	1µA ~ 1.35µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-VSSOP, 8-MSOP (0.110", 2.80mm Width)	8-MSOP
BU9873FJ-GTE2 IC RTC CLOCK/CALENDAR I2C 8SOP Rohm Semiconductor	0 In Stock	1 : ¥9.69000 Cut Tape (CT) 2,500 : ¥4.10924 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Not For New Designs	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I2C, 2-Wire Serial	1.8V ~ 5.5V	-	1µA ~ 1.35µA @ 3V ~ 5.5V	-40°C ~ 85°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOP-J

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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.