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Real Time Clock

Real Time Clocks are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many real time clock manufacturers including Analog Devices, Epson, Microchip, Micro Crystal, NXP, Renesas Electronics, STMicroelectronics & more.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Interface Type	Date Format	Time Format	Package/Case	Battery Backup Switching	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Series	Mounting Style	Qualification	Packaging
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8 AECQ200 Temperature Sensor & Real Time Clock RV-3032-C7 32.768kHz-2.5PPM-TA-QA Micro Crystal 1: $3.39 4,049In Stock	Mfr. Part No. RV-3032-C7 32.768kHz-2.5PPM-TA-QA Mouser Part No 428-203853-MG01	Micro Crystal	Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8 AECQ200 Temperature Sensor & Real Time Clock Learn More about Micro Crystal rv 3032 c7 rtc module	Datasheet	4,049In Stock	Cut Tape $3.39 $2.55 $2.33 $2.10 Reel $1.92 View $1.99 $1.96 $1.88 $1.85 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.3 V	5.5 V	- 40 C	+ 105 C	RV-3032-C7	SMD/SMT	AEC-Q200	Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400T-I/MS Microchip Technology 1: $1.06 4,257In Stock	Mfr. Part No. MCP79400T-I/MS Mouser Part No 579-MCP79400TIMS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	4,257In Stock	Cut Tape $1.06 Reel $0.885	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400T-I/SN Microchip Technology 1: $1.01 7,530In Stock	Mfr. Part No. MCP79400T-I/SN Mouser Part No 579-MCP79400TISN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	7,530In Stock	Cut Tape $1.01 Reel $0.847	Min.: 1 Mult.: 1 : 3,300	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape
Real Time Clock I2C GP RTCC 64B SRAM EUI-48 MCP79401-I/SN Microchip Technology 1: $1.04 12,519In Stock	Mfr. Part No. MCP79401-I/SN Mouser Part No 579-MCP79401ISN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	12,519In Stock	$1.04 $0.96 $0.91 $0.906	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock I2C RTCC 64B SRAM No VBAT MCP7940MT-I/SN Microchip Technology 1: $0.72 4,058In Stock	Mfr. Part No. MCP7940MT-I/SN Mouser Part No 579-MCP7940MT-I/SN	Microchip Technology	Real Time Clock I2C RTCC 64B SRAM No VBAT Learn More about Microchip Technology microchip real time clocks	Datasheet	4,058In Stock	Cut Tape $0.72 Reel $0.603 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM MCP7940N-I/MS Microchip Technology 1: $0.90 2,005In Stock	Mfr. Part No. MCP7940N-I/MS Mouser Part No 579-MCP7940N-I/MS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	2,005In Stock	$0.90 $0.83 $0.821	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock I2C GP RTCC 64B SRAM MCP7940N-I/SN Microchip Technology 1: $0.85 10,294In Stock	Mfr. Part No. MCP7940N-I/SN Mouser Part No 579-MCP7940N-I/SN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	10,294In Stock	$0.85 $0.79 $0.77	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock I2C GP RTCC 64B SRAM, EXT MCP7940NT-E/MS Microchip Technology 1: $1.01 2,497In Stock	Mfr. Part No. MCP7940NT-E/MS Mouser Part No 579-MCP7940NT-E/MS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM, EXT Learn More about Microchip Technology microchip real time clocks	Datasheet	2,497In Stock	Cut Tape $1.01 Reel $0.85 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 125 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM EXT MCP7940NT-E/SN Microchip Technology 1: $0.99 2,202In Stock	Mfr. Part No. MCP7940NT-E/SN Mouser Part No 579-MCP7940NT-E/SN	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM EXT Learn More about Microchip Technology microchip real time clocks	Datasheet	2,202In Stock	Cut Tape $0.99 $0.982 $0.98 $0.978 View Reel $0.813 $0.966 $0.963 $0.96 $0.813 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 125 C	MCP7940N	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM MCP7940NT-I/MS Microchip Technology 1: $0.98 13,533In Stock	Mfr. Part No. MCP7940NT-I/MS Mouser Part No 579-MCP7940NT-I/MS	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	13,533In Stock	Cut Tape $0.98 Reel $0.821 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM MCP7940NT-I/ST Microchip Technology 1: $0.98 2,163In Stock	Mfr. Part No. MCP7940NT-I/ST Mouser Part No 579-MCP7940NT-I/ST	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	2,163In Stock	Cut Tape $0.98 Reel $0.821 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410-I/SN Microchip Technology 1: $1.04 4,086In Stock	Mfr. Part No. MCP79410-I/SN Mouser Part No 579-MCP79410-I/SN	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	4,086In Stock	$1.04 $0.96 $0.924	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410T-I/MS Microchip Technology 1: $1.18 6,834In Stock	Mfr. Part No. MCP79410T-I/MS Mouser Part No 579-MCP79410T-I/MS	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	6,834In Stock	Cut Tape $1.18 Reel $0.988 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID MCP79410T-I/ST Microchip Technology 1: $1.18 2,151In Stock	Mfr. Part No. MCP79410T-I/ST Mouser Part No 579-MCP79410T-I/ST	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	2,151In Stock	Cut Tape $1.18 Reel $0.988 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 MCP79412-I/SN Microchip Technology 1: $1.13 3,227In Stock	Mfr. Part No. MCP79412-I/SN Mouser Part No 579-MCP79412ISN	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	3,227In Stock	$1.13 $1.05 $1.03	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 MCP79412T-I/MNY Microchip Technology 1: $1.31 4,787In Stock	Mfr. Part No. MCP79412T-I/MNY Mouser Part No 579-MCP79412TIMNY	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	4,787In Stock	Cut Tape $1.31 Reel $1.09 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TDFN-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 MCP79412T-I/SN Microchip Technology 1: $1.23 10,025In Stock	Mfr. Part No. MCP79412T-I/SN Mouser Part No 579-MCP79412TISN	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	10,025In Stock	Cut Tape $1.23 Reel $1.03 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID MCP79510-I/MS Microchip Technology 1: $1.29 1,144In Stock 1,600Expected 02/11/2026	Mfr. Part No. MCP79510-I/MS Mouser Part No 579-MCP79510-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	1,144In Stock 1,600Expected 02/11/2026	$1.29 $1.20 $1.16	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-10	Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID MCP79510T-I/MS Microchip Technology 1: $1.38 2,809In Stock	Mfr. Part No. MCP79510T-I/MS Mouser Part No 579-MCP79510T-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	2,809In Stock	Cut Tape $1.38 Reel $1.16 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79511T-I/MS Microchip Technology 1: $1.49 1,581In Stock	Mfr. Part No. MCP79511T-I/MS Mouser Part No 579-MCP79511T-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp795xx	Datasheet	1,581In Stock	Cut Tape $1.49 Reel $1.25	Min.: 1 Mult.: 1 : 2,500	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape
Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID MCP79520-I/MS Microchip Technology 1: $1.39 8,158In Stock	Mfr. Part No. MCP79520-I/MS Mouser Part No 579-MCP79520-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	8,158In Stock	$1.39 $1.28 $1.25	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-10	Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-64 MCP79522-I/MS Microchip Technology 1: $1.48 1,395In Stock	Mfr. Part No. MCP79522-I/MS Mouser Part No 579-MCP79522-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp795xx	Datasheet	1,395In Stock	$1.48 $1.37 $1.34	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-10	Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock 1Kb EE 64B SRAM WD TED ID MCP795W10-I/ST Microchip Technology 1: $1.81 3,232In Stock	Mfr. Part No. MCP795W10-I/ST Mouser Part No 579-MCP795W10-I/ST	Microchip Technology	Real Time Clock 1Kb EE 64B SRAM WD TED ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	3,232In Stock	$1.81 $1.66 $1.62	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-14	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock 32.768 KHZ 8 PIN AB-RTCMC-32.768KHZ-AIGZ-S7-T ABRACON 1: $4.70 3,011In Stock 2,000Expected 30/10/2026	Mfr. Part No. AB-RTCMC-32.768KHZ-AIGZ-S7-T Mouser Part No 815-ABMC-327AIGZS7T	ABRACON	Real Time Clock 32.768 KHZ 8 PIN Learn More about ABRACON Abracon ABRTC MC	Datasheet	3,011In Stock 2,000Expected 30/10/2026	Cut Tape $4.70 $3.55 $3.27 $2.71 Reel $2.55 View $2.66 $2.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		No Backup Switching	1.3 V	4.4 V	- 40 C	+ 85 C	AB-RTCMC	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768 KHZ IC RTC CLK AB-RTCMC-32.768kHz-EOA9-S3-DBT ABRACON 1: $8.48 2,141In Stock	Mfr. Part No. AB-RTCMC-32.768kHz-EOA9-S3-DBT Mouser Part No 815-ABMC-327EOA9S3DB	ABRACON	Real Time Clock 32.768 KHZ IC RTC CLK Learn More about ABRACON Abracon ABRTC MC	Datasheet	2,141In Stock	Cut Tape $8.48 $6.57 $5.96 $5.52 Reel $4.97 View $5.28 $5.16 $4.79 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.4 V	5.5 V	- 40 C	+ 125 C	AB-RTCMC	SMD/SMT		Reel, Cut Tape, MouseReel