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 : $1.09000 Cut Tape (CT) 4,000 : $0.49525 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 : $1.21000 Cut Tape (CT) 3,300 : $0.98280 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 : $1.24000 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 : $1.28000 Cut Tape (CT) 4,000 : $0.58548 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 : $1.34000 Cut Tape (CT) 3,300 : $1.10656 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 : $1.40000 Cut Tape (CT) 2,500 : $0.53418 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 : $1.41000 Cut Tape (CT) 2,500 : $0.66374 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 : $1.43000 Cut Tape (CT) 2,500 : $1.16480 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 : $1.47000 Cut Tape (CT) 3,300 : $1.20848 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 : $1.51000 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 : $1.57000 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 : $1.59000 Cut Tape (CT) 2,500 : $0.76077 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 : $1.60000 Cut Tape (CT) 3,300 : $1.32496 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 : $1.72000 Cut Tape (CT) 4,000 : $0.80998 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 : $1.72000 Cut Tape (CT) 2,500 : $1.40140 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 : $1.72000 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 : $1.78000 Cut Tape (CT) 3,300 : $1.45600 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 : $1.78000 Cut Tape (CT) 3,300 : $1.45600 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 : $1.79000 Cut Tape (CT) 2,500 : $0.86736 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 : $1.79000 Cut Tape (CT) 2,500 : $0.86736 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 : $1.88000 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 : $2.01000 Cut Tape (CT) 2,500 : $0.96736 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 : $2.01000 Cut Tape (CT) 2,500 : $1.64528 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 : $2.02000 Cut Tape (CT) 1,000 : $1.02497 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 : $2.13000 Cut Tape (CT) 4,000 : $1.02483 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.

Real Time Clocks

Real Time Clocks

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