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.	53 500 In Stock	1 : 15,75000 Kč Cut Tape (CT) 4 000 : 7,14237 Kč 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)
MCP7940MT-I/MNY IC RTC CLK/CALENDAR I2C 8TDFN Microchip Technology	10 857 In Stock	1 : 17,43000 Kč Cut Tape (CT) 3 300 : 14,17365 Kč 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	-	1µA @ 5.5V	-40°C ~ 85°C	Surface Mount	-	-	8-WFDFN Exposed Pad	8-TDFN (2x3)
MCP7940N-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	16 248 In Stock	1 : 17,85000 Kč 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
PCF85063TP/1Z IC RTC CLK/CALENDAR I2C 8HWSON NXP USA Inc.	11 215 In Stock	1 : 18,48000 Kč Cut Tape (CT) 4 000 : 8,44366 Kč 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)
MCP7940NT-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	23 489 In Stock	1 : 19,32000 Kč Cut Tape (CT) 3 300 : 15,95854 Kč 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
PCF85063AT/AY IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	24 002 In Stock	1 : 20,16000 Kč Cut Tape (CT) 2 500 : 7,70375 Kč 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
PCF85063ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	16 066 In Stock	1 : 20,37000 Kč Cut Tape (CT) 2 500 : 9,57232 Kč 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
MCP7940NT-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	19 043 In Stock	1 : 20,58000 Kč Cut Tape (CT) 2 500 : 16,79840 Kč 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
MCP7940NT-I/MNY IC RTC CLK/CALENDAR I2C 8TDFN Microchip Technology	13 508 In Stock	1 : 21,21000 Kč Cut Tape (CT) 3 300 : 17,42840 Kč 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)
MCP79410-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	10 063 In Stock	1 : 21,84000 Kč Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOIC
MCP79410-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	1 105 In Stock	1 : 22,68000 Kč Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
PCF8563T/5,518 IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	44 893 In Stock	1 : 22,89000 Kč Cut Tape (CT) 2 500 : 10,97162 Kč 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
MCP79410T-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	23 665 In Stock	1 : 23,10000 Kč Cut Tape (CT) 3 300 : 19,10818 Kč Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PCF85263ATL/AX IC RTC CLK/CALENDAR I2C 10DFN NXP USA Inc.	55 455 In Stock	1 : 24,78000 Kč Cut Tape (CT) 4 000 : 11,68135 Kč 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)
MCP79410T-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	7 519 In Stock	1 : 24,78000 Kč Cut Tape (CT) 2 500 : 20,21058 Kč Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
MCP79411-I/MS IC RTC CLK/CALENDAR I2C 8MSOP Microchip Technology	5 933 In Stock	1 : 24,78000 Kč Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-MSOP
MCP79410T-I/MNY IC RTC CLK/CALENDAR I2C 8TDFN Microchip Technology	10 726 In Stock	1 : 25,62000 Kč Cut Tape (CT) 3 300 : 20,99800 Kč Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-WFDFN Exposed Pad	8-TDFN (2x3)
MCP79412T-I/SN IC RTC CLK/CALENDAR I2C 8SOIC Microchip Technology	6 358 In Stock	1 : 25,62000 Kč Cut Tape (CT) 3 300 : 20,99800 Kč Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, Leap Year, Square Wave Output, SRAM, Unique ID	64B, 1Kb	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	-	-	8-SOIC (0.154", 3.90mm Width)	8-SOIC
PCF85263AT/AJ IC RTC CLOCK/CALENDAR I2C 8SO NXP USA Inc.	23 821 In Stock	1 : 25,83000 Kč Cut Tape (CT) 2 500 : 12,50884 Kč 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
PCF85263ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	18 652 In Stock	1 : 25,83000 Kč Cut Tape (CT) 2 500 : 12,50884 Kč 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-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP
MCP79510-I/MS IC RTC CLK/CALENDAR SPI 10MSOP Microchip Technology	2 505 In Stock	1 : 27,09000 Kč Tube	-	Tube	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8V ~ 3.6V	1.3V ~ 3.6V	1µA @ 1.8V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
PCF85363ATT/AJ IC RTC CLK/CALENDAR I2C 8TSSOP NXP USA Inc.	56 143 In Stock	1 : 28,98000 Kč Cut Tape (CT) 2 500 : 13,95090 Kč 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
MCP79510T-I/MS IC RTC CLK/CALENDAR SPI 10MSOP Microchip Technology	9 316 In Stock	1 : 28,98000 Kč Cut Tape (CT) 2 500 : 23,72782 Kč Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Clock/Calendar	Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID	64B	HH:MM:SS:hh (12/24 hr)	YY-MM-DD-dd	SPI	1.8V ~ 3.6V	1.3V ~ 3.6V	1µA @ 1.8V ~ 3.6V	-40°C ~ 85°C	Surface Mount	-	-	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)	10-MSOP
RX8130CE B0 IC RTC TIME EVENT REC I2C 10SMD EPSON	1 847 In Stock	1 : 29,19000 Kč Cut Tape (CT) 1 000 : 14,78175 Kč Tape & Reel (TR)	RX8130CE	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	Not Verified	Time Event Recorder	Alarm	-	HH:MM:SS	YY-MM-DD	I2C	1.25V ~ 5.5V	1.1V ~ 5.5V	0.5µA @ 3V	-40°C ~ 85°C	Surface Mount	-	-	10-SMD, No Lead	10-SMD (3.2x2.5)
PCF85363ATL/AX IC RTC CLK/CALENDAR I2C 10DFN NXP USA Inc.	12 235 In Stock	1 : 30,66000 Kč Cut Tape (CT) 4 000 : 14,77971 Kč 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	-	-	10-XFDFN Exposed Pad	10-DFN (2.6x2.6)

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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.

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