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

PCF85063ATL/1,118 IC RTC CLK/CALENDAR I2C 10DFN NXP USA Inc.	30,443 In Stock	1 : ₹79.20000 Cut Tape (CT) 4,000 : ₹33.62083 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	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)
PCF85063AT/AY IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	1,13,916 In Stock	1 : ₹84.20000 Cut Tape (CT) 2,500 : ₹35.70737 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	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF85063TP/1Z IC RTC CLK/CALENDAR I2C 8HWSON NXP USA Inc.	64,329 In Stock	1 : ₹85.04000 Cut Tape (CT) 4,000 : ₹36.06107 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	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-WFDFN Exposed Pad	8-HWSON (2x3)
PCF85063ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	63,239 In Stock	1 : ₹85.04000 Cut Tape (CT) 2,500 : ₹36.06119 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	0.9V ~ 5.5V	-	0.6µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
PCF8563T/5,518 IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	4,485 In Stock	1 : ₹95.88000 Cut Tape (CT) 2,500 : ₹40.67055 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF85263ATL/AX IC RTC CLK/CALENDAR I2C 10DFN NXP USA Inc.	60,185 In Stock	1 : ₹105.88000 Cut Tape (CT) 4,000 : ₹45.03210 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	0.9V ~ 5.5V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)
PCF85263AT/AJ IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	1,40,044 In Stock	1 : ₹111.72000 Cut Tape (CT) 2,500 : ₹47.48422 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	0.9V ~ 5.5V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SO
PCF2123BS/1,518 IC RTC CLK/CALENDAR SPI 16HVQFN NXP USA Inc.	30,000 In Stock	1 : ₹130.06000 Cut Tape (CT) 6,000 : ₹52.54617 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	16-VFQFN Exposed Pad	16-HVQFN (3x3)
PCF85363ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	1,01,714 In Stock	1 : ₹127.56000 Cut Tape (CT) 2,500 : ₹54.01509 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	0.9V ~ 5.5V	0.885µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
PCF2123TS/1,118 IC RTC CLK/CALENDAR SPI 14TSSOP NXP USA Inc.	38,269 In Stock	1 : ₹124.22000 Cut Tape (CT) 2,500 : ₹56.83766 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
PCF2123TS/1,112 IC RTC CLK/CALENDAR SPI 14TSSOP NXP USA Inc.	0 In Stock	Active	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	SPI	1.6V ~ 5.5V	-	0.33µA ~ 0.38µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP
S-35390A-I8T1U IC RTC CLK/CALENDAR I2C SNT8A ABLIC Inc.	17,549 In Stock	1 : ₹129.22000 Cut Tape (CT) 5,000 : ₹57.03108 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SMD, Flat Lead	SNT-8A
BQ32000DR IC RTC CLK/CALENDAR I2C 8SOIC Texas Instruments	5,057 In Stock 9,500 Marketplace	1 : ₹134.23000 Cut Tape (CT) 2,500 : ₹57.05643 Tape & Reel (TR) 430 : ₹58.35900 Bulk	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel® Bulk	Active	Not Verified	Clock/Calendar	Leap Year, Square Wave Output, Trickle-Charger	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	3V ~ 3.6V	1.4V ~ 3.6V	100µA @ 3.3V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PCF8563TS/5,118 IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	2,688 In Stock	1 : ₹135.89000 Cut Tape (CT) 2,500 : ₹57.51630 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1V ~ 5.5V	-	0.6µA ~ 0.75µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
S-35390A-T8T1G IC RTC CLK/CALENDAR I2C 8TSSOP ABLIC Inc.	31,233 In Stock	1 : ₹129.22000 Cut Tape (CT) 3,000 : ₹59.22466 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-TSSOP (0.173", 4.40mm Width)	8-TSSOP
S-35390A-J8T1G IC RTC CLOCK/CALENDAR I2C 8SOP ABLIC Inc.	26,115 In Stock	1 : ₹129.22000 Cut Tape (CT) 2,000 : ₹59.22480 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.3V ~ 5.5V	-	0.93µA ~ 1.1µA @ 3V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOP-J
MCP7940NT-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	32,468 In Stock	1 : ₹70.86000 Cut Tape (CT) 3,300 : ₹63.36145 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q100	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MCP7940NT-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	40,873 In Stock	1 : ₹75.03000 Cut Tape (CT) 2,500 : ₹66.69600 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q100	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
RV-8263-C7-32.768KHZ-20PPM-TA-QC IC RTC CLK/CALENDAR I2C 8SON Micro Crystal AG	15,674 In Stock	1 : ₹135.89000 Cut Tape (CT) 1,000 : ₹66.78604 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Programmable Clock Output, RAM, Timer	1B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	0.9V ~ 5.5V	-	0.24µA @ 3V	-40°C ~ 85°C (TA)	Surface Mount	-	-	8-WCDFN	8-SON (3.2x1.5)
PCF8523TK/1,118 IC RTC CLK/CALENDAR I2C 8HVSON NXP USA Inc.	16,502 In Stock	1 : ₹153.40000 Cut Tape (CT) 6,000 : ₹67.51789 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Watchdog Timer	-	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.6V ~ 5.5V	1.8V ~ 5.5V	0.5µA @ 2V ~ 5V	-40°C ~ 85°C	Surface Mount	-	-	8-VDFN Exposed Pad	8-HVSON (4x4)
MCP7940NT-I/MNY IC RTC CLK/CALENDAR I2C 8TDFN Microchip Technology	33,579 In Stock	1 : ₹79.20000 Cut Tape (CT) 3,300 : ₹69.19735 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q100	8-WFDFN Exposed Pad	8-TDFN (2x3)
MCP7940N-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	9,984 In Stock	1 : ₹70.86000 Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q100	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MCP7940NT-E/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	11,067 In Stock	1 : ₹80.87000 Cut Tape (CT) 2,500 : ₹70.86450 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 125°C	Surface Mount	Automotive	AEC-Q100	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
MCP7940N-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	4,894 In Stock	1 : ₹75.03000 Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM	64B	HH:MM:SS (12/24 hr)	YY-MM-DD-dd	I²C, 2-Wire Serial	1.8V ~ 5.5V	1.3V ~ 5.5V	1.2µA @ 3.3V	-40°C ~ 85°C	Surface Mount	Automotive	AEC-Q100	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
AB1815-T3 IC RTC CLK/CALENDAR SPI 16QFN Abracon LLC	52,702 In Stock	1 : ₹165.07000 Cut Tape (CT) 3,000 : ₹75.67550 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer	256B	HH:MM:SS:hh	YY-MM-DD-dd	SPI	1.7V ~ 3.6V	1.5V ~ 3.6V	0.17µA ~ 0.22µA @ 1.8V ~ 3V	-40°C ~ 85°C	Surface Mount	-	-	16-VFQFN Exposed Pad	16-QFN (3x3)

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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.

Real Time Clocks

Real Time Clocks

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